/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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:01:05,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:01:05,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:01:05,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:01:05,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:01:06,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:01:06,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:01:06,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:01:06,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:01:06,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:01:06,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:01:06,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:01:06,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:01:06,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:01:06,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:01:06,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:01:06,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:01:06,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:01:06,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:01:06,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:01:06,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:01:06,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:01:06,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:01:06,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:01:06,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:01:06,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:01:06,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:01:06,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:01:06,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:01:06,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:01:06,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:01:06,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:01:06,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:01:06,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:01:06,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:01:06,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:01:06,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:01:06,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:01:06,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:01:06,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:01:06,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:01:06,067 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 05:01:06,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:01:06,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:01:06,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:01:06,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:01:06,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:01:06,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:01:06,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:01:06,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:01:06,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:01:06,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:01:06,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:01:06,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:01:06,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:01:06,117 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:01:06,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:01:06,117 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:01:06,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:01:06,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:01:06,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:01:06,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:01:06,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:01:06,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:01:06,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:01:06,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:01:06,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:01:06,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:01:06,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:01:06,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:01:06,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:01:06,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:01:06,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:01:06,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:01:06,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:01:06,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:01:06,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-16 05:01:06,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7242799/cf5f0928978c4155895a45267e318a2f/FLAG01fc4870a [2020-10-16 05:01:07,007 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:01:07,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-10-16 05:01:07,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7242799/cf5f0928978c4155895a45267e318a2f/FLAG01fc4870a [2020-10-16 05:01:07,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7242799/cf5f0928978c4155895a45267e318a2f [2020-10-16 05:01:07,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:01:07,320 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:01:07,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:01:07,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:01:07,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:01:07,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:01:07" (1/1) ... [2020-10-16 05:01:07,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a75c358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:07, skipping insertion in model container [2020-10-16 05:01:07,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:01:07" (1/1) ... [2020-10-16 05:01:07,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:01:07,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:01:07,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:01:07,947 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:01:07,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:01:08,065 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:01:08,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08 WrapperNode [2020-10-16 05:01:08,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:01:08,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:01:08,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:01:08,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:01:08,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:01:08,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:01:08,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:01:08,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:01:08,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (1/1) ... [2020-10-16 05:01:08,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:01:08,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:01:08,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:01:08,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:01:08,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (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 05:01:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:01:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:01:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:01:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:01:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:01:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:01:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:01:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:01:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:01:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:01:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:01:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:01:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:01:08,226 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 05:01:08,596 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:01:08,596 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:01:08,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:01:08 BoogieIcfgContainer [2020-10-16 05:01:08,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:01:08,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:01:08,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:01:08,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:01:08,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:01:07" (1/3) ... [2020-10-16 05:01:08,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e1b767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:01:08, skipping insertion in model container [2020-10-16 05:01:08,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:01:08" (2/3) ... [2020-10-16 05:01:08,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e1b767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:01:08, skipping insertion in model container [2020-10-16 05:01:08,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:01:08" (3/3) ... [2020-10-16 05:01:08,607 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-10-16 05:01:08,619 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:01:08,627 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:01:08,628 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:01:08,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,666 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,666 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,672 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,672 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,675 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,676 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:01:08,701 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:01:08,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:01:08,719 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:01:08,719 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:01:08,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:01:08,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:01:08,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:01:08,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:01:08,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:01:08,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:01:08,780 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:01:08,780 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:01:08,788 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 46 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 05:01:08,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:01:08,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:01:08,797 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:01:08,799 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:01:08,802 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:01:08,803 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:01:08,821 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:01:08,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:01:08,823 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 45 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 05:01:08,824 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:01:10,148 INFO L132 LiptonReduction]: Checked pairs total: 1702 [2020-10-16 05:01:10,148 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 05:01:10,151 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1356 [2020-10-16 05:01:10,159 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 05:01:10,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:01:10,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:10,161 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:10,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:10,167 INFO L82 PathProgramCache]: Analyzing trace with hash 967519021, now seen corresponding path program 1 times [2020-10-16 05:01:10,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:10,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159562930] [2020-10-16 05:01:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:10,406 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 05:01:10,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159562930] [2020-10-16 05:01:10,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:10,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:01:10,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212298290] [2020-10-16 05:01:10,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:01:10,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:10,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:01:10,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:01:10,445 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 05:01:10,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:01:10,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:10,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 05:01:10,451 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:10,480 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:01:10,480 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:01:10,481 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 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 05:01:10,482 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:01:10,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:01:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:01:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:01:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:01:10,508 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 05:01:10,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:01:10,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:01:10,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:10,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:01:10,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:01:10,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:01:10,536 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:01:10,539 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:01:10,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:01:10,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:01:10,545 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:01:10,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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 05:01:10,549 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:01:10,550 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:01:10,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:01:10,554 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:10,554 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:10,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:01:10,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:10,562 INFO L82 PathProgramCache]: Analyzing trace with hash -71682266, now seen corresponding path program 1 times [2020-10-16 05:01:10,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:10,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455965328] [2020-10-16 05:01:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:10,650 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 05:01:10,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455965328] [2020-10-16 05:01:10,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:10,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:01:10,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521971809] [2020-10-16 05:01:10,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:01:10,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:10,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:01:10,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:01:10,659 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 05:01:10,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 05:01:10,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:10,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 05:01:10,660 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:10,671 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:01:10,671 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:01:10,671 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 17 events. 0/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 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 05:01:10,672 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:01:10,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 54 flow [2020-10-16 05:01:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:01:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:01:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:01:10,675 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 05:01:10,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:01:10,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:01:10,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:10,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:01:10,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:01:10,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:01:10,678 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:01:10,679 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:01:10,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 54 flow [2020-10-16 05:01:10,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:01:10,680 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2020-10-16 05:01:10,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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 05:01:10,681 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 05:01:10,681 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2020-10-16 05:01:10,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:01:10,682 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:10,682 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:10,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:01:10,682 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:10,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2072570189, now seen corresponding path program 1 times [2020-10-16 05:01:10,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:10,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40059968] [2020-10-16 05:01:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:10,746 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 05:01:10,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40059968] [2020-10-16 05:01:10,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:10,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:01:10,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898040365] [2020-10-16 05:01:10,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:01:10,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:10,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:01:10,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:01:10,750 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 05:01:10,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand 4 states. [2020-10-16 05:01:10,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:10,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 05:01:10,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:10,797 INFO L129 PetriNetUnfolder]: 10/56 cut-off events. [2020-10-16 05:01:10,797 INFO L130 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2020-10-16 05:01:10,798 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 56 events. 10/56 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 208 event pairs, 1 based on Foata normal form. 7/61 useless extension candidates. Maximal degree in co-relation 108. Up to 13 conditions per place. [2020-10-16 05:01:10,798 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 8 selfloop transitions, 4 changer transitions 1/24 dead transitions. [2020-10-16 05:01:10,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 99 flow [2020-10-16 05:01:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:01:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:01:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2020-10-16 05:01:10,802 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8175675675675675 [2020-10-16 05:01:10,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2020-10-16 05:01:10,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2020-10-16 05:01:10,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:10,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2020-10-16 05:01:10,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:01:10,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:01:10,806 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:01:10,806 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 4 states and 363 transitions. [2020-10-16 05:01:10,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 99 flow [2020-10-16 05:01:10,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:01:10,808 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 74 flow [2020-10-16 05:01:10,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 05:01:10,809 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:01:10,809 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 74 flow [2020-10-16 05:01:10,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:01:10,810 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:10,810 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:10,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:01:10,810 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:10,826 INFO L82 PathProgramCache]: Analyzing trace with hash -175965771, now seen corresponding path program 1 times [2020-10-16 05:01:10,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:10,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992133083] [2020-10-16 05:01:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:10,870 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 05:01:10,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992133083] [2020-10-16 05:01:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:01:10,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107722348] [2020-10-16 05:01:10,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:01:10,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:10,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:01:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:01:10,873 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 05:01:10,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 74 flow. Second operand 4 states. [2020-10-16 05:01:10,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:10,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 05:01:10,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:10,904 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2020-10-16 05:01:10,904 INFO L130 PetriNetUnfolder]: For 37/41 co-relation queries the response was YES. [2020-10-16 05:01:10,905 INFO L80 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 42 events. 6/42 cut-off events. For 37/41 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 2 based on Foata normal form. 5/47 useless extension candidates. Maximal degree in co-relation 107. Up to 13 conditions per place. [2020-10-16 05:01:10,905 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 4 selfloop transitions, 3 changer transitions 4/22 dead transitions. [2020-10-16 05:01:10,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 109 flow [2020-10-16 05:01:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:01:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:01:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2020-10-16 05:01:10,908 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2020-10-16 05:01:10,908 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2020-10-16 05:01:10,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2020-10-16 05:01:10,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:10,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2020-10-16 05:01:10,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:01:10,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:01:10,911 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:01:10,911 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 74 flow. Second operand 4 states and 360 transitions. [2020-10-16 05:01:10,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 109 flow [2020-10-16 05:01:10,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 97 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 05:01:10,913 INFO L241 Difference]: Finished difference. Result has 32 places, 17 transitions, 66 flow [2020-10-16 05:01:10,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2020-10-16 05:01:10,914 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 05:01:10,914 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 66 flow [2020-10-16 05:01:10,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:01:10,914 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:10,914 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:10,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:01:10,915 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:10,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1030764699, now seen corresponding path program 1 times [2020-10-16 05:01:10,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:10,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614803057] [2020-10-16 05:01:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:10,986 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 05:01:10,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614803057] [2020-10-16 05:01:10,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:10,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:01:10,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245149673] [2020-10-16 05:01:10,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:01:10,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:10,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:01:10,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:01:10,991 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 05:01:10,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 66 flow. Second operand 4 states. [2020-10-16 05:01:10,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:10,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 05:01:10,992 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:11,027 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2020-10-16 05:01:11,028 INFO L130 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2020-10-16 05:01:11,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 26 events. 1/26 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 3/29 useless extension candidates. Maximal degree in co-relation 55. Up to 5 conditions per place. [2020-10-16 05:01:11,029 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 4 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2020-10-16 05:01:11,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 20 transitions, 97 flow [2020-10-16 05:01:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:01:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:01:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2020-10-16 05:01:11,032 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8036036036036036 [2020-10-16 05:01:11,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 446 transitions. [2020-10-16 05:01:11,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 446 transitions. [2020-10-16 05:01:11,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:11,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 446 transitions. [2020-10-16 05:01:11,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:01:11,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:01:11,035 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:01:11,035 INFO L185 Difference]: Start difference. First operand has 32 places, 17 transitions, 66 flow. Second operand 5 states and 446 transitions. [2020-10-16 05:01:11,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 20 transitions, 97 flow [2020-10-16 05:01:11,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 81 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-16 05:01:11,037 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 66 flow [2020-10-16 05:01:11,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=5, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2020-10-16 05:01:11,038 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:01:11,038 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 66 flow [2020-10-16 05:01:11,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:01:11,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:11,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:11,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:01:11,039 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:11,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1881279387, now seen corresponding path program 1 times [2020-10-16 05:01:11,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:11,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719906584] [2020-10-16 05:01:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:11,097 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 05:01:11,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719906584] [2020-10-16 05:01:11,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:11,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:01:11,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147979384] [2020-10-16 05:01:11,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:01:11,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:11,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:01:11,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:01:11,101 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 05:01:11,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 66 flow. Second operand 4 states. [2020-10-16 05:01:11,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:11,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 05:01:11,102 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:11,149 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:01:11,150 INFO L130 PetriNetUnfolder]: For 208/215 co-relation queries the response was YES. [2020-10-16 05:01:11,150 INFO L80 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 69 events. 28/69 cut-off events. For 208/215 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 206 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 172. Up to 45 conditions per place. [2020-10-16 05:01:11,151 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:01:11,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 118 flow [2020-10-16 05:01:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:01:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:01:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2020-10-16 05:01:11,154 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7711711711711712 [2020-10-16 05:01:11,154 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2020-10-16 05:01:11,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2020-10-16 05:01:11,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:11,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2020-10-16 05:01:11,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:01:11,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:01:11,157 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:01:11,157 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 66 flow. Second operand 5 states and 428 transitions. [2020-10-16 05:01:11,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 118 flow [2020-10-16 05:01:11,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 4 selfloop flow, removed 6 redundant places. [2020-10-16 05:01:11,159 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 05:01:11,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, 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=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 05:01:11,160 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:01:11,160 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 05:01:11,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:01:11,161 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:11,161 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:11,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:01:11,161 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:11,162 INFO L82 PathProgramCache]: Analyzing trace with hash -936763998, now seen corresponding path program 1 times [2020-10-16 05:01:11,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:11,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323271496] [2020-10-16 05:01:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:01:11,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323271496] [2020-10-16 05:01:11,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:11,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:01:11,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030236244] [2020-10-16 05:01:11,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:01:11,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:01:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:01:11,217 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 05:01:11,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 05:01:11,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:11,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 05:01:11,217 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:11,271 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:01:11,271 INFO L130 PetriNetUnfolder]: For 80/124 co-relation queries the response was YES. [2020-10-16 05:01:11,272 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 80/124 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 168. Up to 35 conditions per place. [2020-10-16 05:01:11,272 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:01:11,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 05:01:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:01:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:01:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 05:01:11,275 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2020-10-16 05:01:11,275 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 05:01:11,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 05:01:11,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:11,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 05:01:11,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:01:11,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:01:11,279 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:01:11,279 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 513 transitions. [2020-10-16 05:01:11,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 05:01:11,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:01:11,281 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 05:01:11,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, 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 05:01:11,282 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:01:11,282 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 05:01:11,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:01:11,282 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:11,283 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:01:11,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:01:11,283 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:11,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1322861499, now seen corresponding path program 1 times [2020-10-16 05:01:11,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:11,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041241785] [2020-10-16 05:01:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:11,338 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 05:01:11,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041241785] [2020-10-16 05:01:11,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:11,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:01:11,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400594941] [2020-10-16 05:01:11,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:01:11,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:01:11,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:01:11,342 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 05:01:11,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 05:01:11,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:11,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 05:01:11,343 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:11,407 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:01:11,407 INFO L130 PetriNetUnfolder]: For 112/155 co-relation queries the response was YES. [2020-10-16 05:01:11,407 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 112/155 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 05:01:11,408 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:01:11,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 05:01:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:01:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:01:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2020-10-16 05:01:11,411 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2020-10-16 05:01:11,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2020-10-16 05:01:11,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2020-10-16 05:01:11,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:11,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2020-10-16 05:01:11,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:01:11,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:01:11,415 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:01:11,415 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 592 transitions. [2020-10-16 05:01:11,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 05:01:11,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:01:11,418 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 05:01:11,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=106, 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=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:01:11,419 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:01:11,419 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 05:01:11,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:01:11,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:01:11,419 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 05:01:11,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:01:11,420 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:01:11,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:01:11,420 INFO L82 PathProgramCache]: Analyzing trace with hash 159865127, now seen corresponding path program 1 times [2020-10-16 05:01:11,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:01:11,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170125957] [2020-10-16 05:01:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:01:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:01:11,455 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 05:01:11,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170125957] [2020-10-16 05:01:11,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:01:11,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:01:11,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870890422] [2020-10-16 05:01:11,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:01:11,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:01:11,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:01:11,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:01:11,458 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 111 [2020-10-16 05:01:11,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states. [2020-10-16 05:01:11,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:01:11,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 111 [2020-10-16 05:01:11,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:01:11,472 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 05:01:11,472 INFO L130 PetriNetUnfolder]: For 45/50 co-relation queries the response was YES. [2020-10-16 05:01:11,472 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 25 events. 5/25 cut-off events. For 45/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 79. Up to 11 conditions per place. [2020-10-16 05:01:11,472 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 05:01:11,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 134 flow [2020-10-16 05:01:11,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:01:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:01:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2020-10-16 05:01:11,474 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 05:01:11,475 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2020-10-16 05:01:11,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2020-10-16 05:01:11,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:01:11,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2020-10-16 05:01:11,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:01:11,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:01:11,477 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:01:11,477 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states and 372 transitions. [2020-10-16 05:01:11,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 134 flow [2020-10-16 05:01:11,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 100 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 05:01:11,479 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 05:01:11,479 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=36, PETRI_TRANSITIONS=0} [2020-10-16 05:01:11,480 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:01:11,480 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 05:01:11,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:01:11,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:01:11,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:01:11 BasicIcfg [2020-10-16 05:01:11,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:01:11,487 INFO L168 Benchmark]: Toolchain (without parser) took 4165.99 ms. Allocated memory was 252.7 MB in the beginning and 373.3 MB in the end (delta: 120.6 MB). Free memory was 208.5 MB in the beginning and 240.4 MB in the end (delta: -32.0 MB). Peak memory consumption was 88.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,488 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.23 ms. Allocated memory was 252.7 MB in the beginning and 319.8 MB in the end (delta: 67.1 MB). Free memory was 208.5 MB in the beginning and 275.0 MB in the end (delta: -66.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.84 ms. Allocated memory is still 319.8 MB. Free memory was 275.0 MB in the beginning and 273.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,490 INFO L168 Benchmark]: Boogie Preprocessor took 28.03 ms. Allocated memory is still 319.8 MB. Free memory was 273.3 MB in the beginning and 271.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,491 INFO L168 Benchmark]: RCFGBuilder took 455.22 ms. Allocated memory is still 319.8 MB. Free memory was 271.6 MB in the beginning and 248.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,492 INFO L168 Benchmark]: TraceAbstraction took 2884.68 ms. Allocated memory was 319.8 MB in the beginning and 373.3 MB in the end (delta: 53.5 MB). Free memory was 248.5 MB in the beginning and 240.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 61.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:01:11,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 745.23 ms. Allocated memory was 252.7 MB in the beginning and 319.8 MB in the end (delta: 67.1 MB). Free memory was 208.5 MB in the beginning and 275.0 MB in the end (delta: -66.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.84 ms. Allocated memory is still 319.8 MB. Free memory was 275.0 MB in the beginning and 273.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.03 ms. Allocated memory is still 319.8 MB. Free memory was 273.3 MB in the beginning and 271.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 455.22 ms. Allocated memory is still 319.8 MB. Free memory was 271.6 MB in the beginning and 248.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2884.68 ms. Allocated memory was 319.8 MB in the beginning and 373.3 MB in the end (delta: 53.5 MB). Free memory was 248.5 MB in the beginning and 240.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 61.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 556 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1702 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 32 SDtfs, 21 SDslu, 19 SDs, 0 SdLazy, 131 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...