/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:36:35,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:36:35,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:36:35,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:36:35,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:36:35,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:36:35,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:36:35,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:36:35,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:36:35,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:36:35,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:36:35,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:36:35,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:36:35,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:36:35,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:36:35,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:36:35,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:36:35,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:36:35,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:36:35,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:36:35,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:36:35,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:36:35,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:36:35,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:36:35,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:36:35,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:36:35,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:36:35,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:36:35,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:36:35,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:36:35,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:36:35,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:36:35,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:36:35,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:36:35,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:36:35,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:36:35,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:36:35,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:36:35,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:36:35,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:36:35,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:36:35,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:36:35,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:36:35,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:36:35,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:36:35,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:36:35,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:36:35,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:36:35,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:36:35,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:36:35,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:36:35,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:36:35,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:36:35,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:36:35,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:36:35,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:36:35,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:36:35,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:36:35,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:36:35,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:36:35,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:36:35,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:36:35,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:36:35,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:36:35,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:36:35,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:36:35,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:36:35,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:36:35,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:36:35,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:36:35,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:36:35,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:36:35,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:36:35,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:36:35,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:36:35,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:36:35,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:36:35,539 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-11 18:36:35,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5fac9e1/8599479f31f343a896fbe81a5cd472d9/FLAGbdd749b4f [2020-10-11 18:36:36,119 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:36:36,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-11 18:36:36,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5fac9e1/8599479f31f343a896fbe81a5cd472d9/FLAGbdd749b4f [2020-10-11 18:36:36,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5fac9e1/8599479f31f343a896fbe81a5cd472d9 [2020-10-11 18:36:36,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:36:36,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:36:36,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:36,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:36:36,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:36:36,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:36" (1/1) ... [2020-10-11 18:36:36,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aef83f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:36, skipping insertion in model container [2020-10-11 18:36:36,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:36:36" (1/1) ... [2020-10-11 18:36:36,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:36:36,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:36:36,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:36,902 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:36:37,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:36:37,150 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:36:37,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37 WrapperNode [2020-10-11 18:36:37,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:36:37,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:37,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:36:37,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:36:37,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:36:37,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:36:37,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:36:37,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:36:37,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (1/1) ... [2020-10-11 18:36:37,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:36:37,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:36:37,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:36:37,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:36:37,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (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 [2020-10-11 18:36:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:36:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:36:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:36:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:36:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:36:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:36:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:36:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:36:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:36:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:36:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:36:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:36:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:36:37,299 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:36:37,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:36:37,614 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:36:37,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:37 BoogieIcfgContainer [2020-10-11 18:36:37,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:36:37,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:36:37,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:36:37,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:36:37,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:36:36" (1/3) ... [2020-10-11 18:36:37,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1603ce47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:37, skipping insertion in model container [2020-10-11 18:36:37,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:36:37" (2/3) ... [2020-10-11 18:36:37,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1603ce47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:36:37, skipping insertion in model container [2020-10-11 18:36:37,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:36:37" (3/3) ... [2020-10-11 18:36:37,626 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-11 18:36:37,639 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:36:37,647 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:36:37,649 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:36:37,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,702 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,713 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,732 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,732 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,737 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:36:37,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:36:37,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:36:37,787 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:36:37,787 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:36:37,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:36:37,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:36:37,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:36:37,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:36:37,787 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:36:37,800 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:36:37,848 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:36:37,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:37,856 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:36:37,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:36:37,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:36:37,884 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:36:37,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:37,884 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:37,886 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:37,886 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:37,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1532593683, now seen corresponding path program 1 times [2020-10-11 18:36:37,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:37,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185860815] [2020-10-11 18:36:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:38,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185860815] [2020-10-11 18:36:38,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:38,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:38,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970633266] [2020-10-11 18:36:38,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:38,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:38,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:38,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:38,678 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:38,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:36:38,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:38,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:38,683 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:38,859 INFO L129 PetriNetUnfolder]: 11/89 cut-off events. [2020-10-11 18:36:38,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:36:38,860 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 89 events. 11/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 175 event pairs, 5 based on Foata normal form. 5/92 useless extension candidates. Maximal degree in co-relation 113. Up to 19 conditions per place. [2020-10-11 18:36:38,862 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 7 selfloop transitions, 2 changer transitions 14/67 dead transitions. [2020-10-11 18:36:38,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 187 flow [2020-10-11 18:36:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2020-10-11 18:36:38,879 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2020-10-11 18:36:38,880 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2020-10-11 18:36:38,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2020-10-11 18:36:38,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:38,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2020-10-11 18:36:38,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:38,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:38,914 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:38,918 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 548 transitions. [2020-10-11 18:36:38,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 187 flow [2020-10-11 18:36:38,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:36:38,935 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-11 18:36:38,938 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:36:38,939 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:36:38,939 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-11 18:36:38,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:38,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:38,940 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:38,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:36:38,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1178506004, now seen corresponding path program 1 times [2020-10-11 18:36:38,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:38,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284567143] [2020-10-11 18:36:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:39,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284567143] [2020-10-11 18:36:39,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:39,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:39,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260381052] [2020-10-11 18:36:39,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:39,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:39,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:39,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:39,308 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:39,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 6 states. [2020-10-11 18:36:39,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:39,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:39,309 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:39,420 INFO L129 PetriNetUnfolder]: 3/67 cut-off events. [2020-10-11 18:36:39,421 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2020-10-11 18:36:39,422 INFO L80 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 67 events. 3/67 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 107. Up to 9 conditions per place. [2020-10-11 18:36:39,422 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 7 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-11 18:36:39,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 208 flow [2020-10-11 18:36:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 543 transitions. [2020-10-11 18:36:39,426 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8743961352657005 [2020-10-11 18:36:39,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 543 transitions. [2020-10-11 18:36:39,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 543 transitions. [2020-10-11 18:36:39,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:39,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 543 transitions. [2020-10-11 18:36:39,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:39,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:39,431 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:39,431 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 9 states and 543 transitions. [2020-10-11 18:36:39,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 208 flow [2020-10-11 18:36:39,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:39,435 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 136 flow [2020-10-11 18:36:39,436 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:36:39,436 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:36:39,437 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 136 flow [2020-10-11 18:36:39,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:39,437 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:39,437 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:39,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:36:39,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:39,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:39,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1530637996, now seen corresponding path program 1 times [2020-10-11 18:36:39,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:39,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070293228] [2020-10-11 18:36:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:39,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070293228] [2020-10-11 18:36:39,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:39,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:39,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938793028] [2020-10-11 18:36:39,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:39,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:39,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:39,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:39,721 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:36:39,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 136 flow. Second operand 6 states. [2020-10-11 18:36:39,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:39,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:36:39,722 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:39,842 INFO L129 PetriNetUnfolder]: 3/68 cut-off events. [2020-10-11 18:36:39,842 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2020-10-11 18:36:39,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 68 events. 3/68 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 110. Up to 7 conditions per place. [2020-10-11 18:36:39,844 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 6 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-11 18:36:39,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 63 transitions, 212 flow [2020-10-11 18:36:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2020-10-11 18:36:39,848 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872785829307569 [2020-10-11 18:36:39,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 551 transitions. [2020-10-11 18:36:39,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 551 transitions. [2020-10-11 18:36:39,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:39,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 551 transitions. [2020-10-11 18:36:39,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:39,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:39,852 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:39,853 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 136 flow. Second operand 9 states and 551 transitions. [2020-10-11 18:36:39,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 63 transitions, 212 flow [2020-10-11 18:36:39,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 180 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:39,857 INFO L241 Difference]: Finished difference. Result has 77 places, 53 transitions, 140 flow [2020-10-11 18:36:39,857 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2020-10-11 18:36:39,857 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2020-10-11 18:36:39,858 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 140 flow [2020-10-11 18:36:39,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:39,858 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:39,858 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:39,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:36:39,859 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:39,859 INFO L82 PathProgramCache]: Analyzing trace with hash 859278381, now seen corresponding path program 1 times [2020-10-11 18:36:39,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:39,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050320050] [2020-10-11 18:36:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:40,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050320050] [2020-10-11 18:36:40,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:40,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:40,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695802223] [2020-10-11 18:36:40,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:40,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:40,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:40,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:40,228 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:40,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 140 flow. Second operand 6 states. [2020-10-11 18:36:40,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:40,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:40,230 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:40,415 INFO L129 PetriNetUnfolder]: 24/131 cut-off events. [2020-10-11 18:36:40,416 INFO L130 PetriNetUnfolder]: For 72/76 co-relation queries the response was YES. [2020-10-11 18:36:40,417 INFO L80 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 131 events. 24/131 cut-off events. For 72/76 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 5 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 229. Up to 31 conditions per place. [2020-10-11 18:36:40,419 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 19/74 dead transitions. [2020-10-11 18:36:40,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 264 flow [2020-10-11 18:36:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2020-10-11 18:36:40,423 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8921095008051529 [2020-10-11 18:36:40,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 554 transitions. [2020-10-11 18:36:40,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 554 transitions. [2020-10-11 18:36:40,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:40,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 554 transitions. [2020-10-11 18:36:40,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:40,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:40,427 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:40,428 INFO L185 Difference]: Start difference. First operand has 77 places, 53 transitions, 140 flow. Second operand 9 states and 554 transitions. [2020-10-11 18:36:40,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 264 flow [2020-10-11 18:36:40,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 232 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:36:40,437 INFO L241 Difference]: Finished difference. Result has 78 places, 55 transitions, 167 flow [2020-10-11 18:36:40,438 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2020-10-11 18:36:40,445 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2020-10-11 18:36:40,446 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 167 flow [2020-10-11 18:36:40,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:40,447 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:40,447 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:40,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:36:40,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:40,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:40,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2134645173, now seen corresponding path program 1 times [2020-10-11 18:36:40,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:40,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329865909] [2020-10-11 18:36:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:40,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329865909] [2020-10-11 18:36:40,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:40,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:40,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759128879] [2020-10-11 18:36:40,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:40,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:40,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:40,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:40,705 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:36:40,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 167 flow. Second operand 6 states. [2020-10-11 18:36:40,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:40,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:36:40,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:40,820 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2020-10-11 18:36:40,820 INFO L130 PetriNetUnfolder]: For 170/192 co-relation queries the response was YES. [2020-10-11 18:36:40,821 INFO L80 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 119 events. 7/119 cut-off events. For 170/192 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 387 event pairs, 0 based on Foata normal form. 3/120 useless extension candidates. Maximal degree in co-relation 243. Up to 18 conditions per place. [2020-10-11 18:36:40,822 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 12 selfloop transitions, 3 changer transitions 10/69 dead transitions. [2020-10-11 18:36:40,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 305 flow [2020-10-11 18:36:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:40,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2020-10-11 18:36:40,825 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2020-10-11 18:36:40,825 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2020-10-11 18:36:40,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2020-10-11 18:36:40,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:40,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2020-10-11 18:36:40,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:40,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:40,829 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:40,829 INFO L185 Difference]: Start difference. First operand has 78 places, 55 transitions, 167 flow. Second operand 9 states and 548 transitions. [2020-10-11 18:36:40,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 305 flow [2020-10-11 18:36:40,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 274 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-11 18:36:40,834 INFO L241 Difference]: Finished difference. Result has 83 places, 55 transitions, 179 flow [2020-10-11 18:36:40,834 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=83, PETRI_TRANSITIONS=55} [2020-10-11 18:36:40,835 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2020-10-11 18:36:40,835 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 55 transitions, 179 flow [2020-10-11 18:36:40,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:40,835 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:40,835 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:40,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:36:40,836 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:40,836 INFO L82 PathProgramCache]: Analyzing trace with hash -960057204, now seen corresponding path program 1 times [2020-10-11 18:36:40,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:40,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636177809] [2020-10-11 18:36:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:40,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636177809] [2020-10-11 18:36:40,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:40,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:36:40,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061980752] [2020-10-11 18:36:40,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:36:40,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:40,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:36:40,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:36:41,049 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:41,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 55 transitions, 179 flow. Second operand 6 states. [2020-10-11 18:36:41,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:41,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:41,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:41,265 INFO L129 PetriNetUnfolder]: 190/507 cut-off events. [2020-10-11 18:36:41,265 INFO L130 PetriNetUnfolder]: For 439/455 co-relation queries the response was YES. [2020-10-11 18:36:41,270 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 507 events. 190/507 cut-off events. For 439/455 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3060 event pairs, 13 based on Foata normal form. 14/492 useless extension candidates. Maximal degree in co-relation 1057. Up to 161 conditions per place. [2020-10-11 18:36:41,272 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 6 changer transitions 19/80 dead transitions. [2020-10-11 18:36:41,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 299 flow [2020-10-11 18:36:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:36:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:36:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:36:41,275 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:36:41,275 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:36:41,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:36:41,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:41,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:36:41,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:36:41,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:36:41,280 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:36:41,281 INFO L185 Difference]: Start difference. First operand has 83 places, 55 transitions, 179 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:36:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 299 flow [2020-10-11 18:36:41,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 278 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:36:41,288 INFO L241 Difference]: Finished difference. Result has 84 places, 58 transitions, 214 flow [2020-10-11 18:36:41,288 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2020-10-11 18:36:41,289 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2020-10-11 18:36:41,289 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 214 flow [2020-10-11 18:36:41,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:36:41,289 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:41,290 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:41,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:36:41,290 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash -71570157, now seen corresponding path program 1 times [2020-10-11 18:36:41,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:41,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862442145] [2020-10-11 18:36:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:41,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862442145] [2020-10-11 18:36:41,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:41,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:41,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630608988] [2020-10-11 18:36:41,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:41,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:41,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:41,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:41,563 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:41,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 58 transitions, 214 flow. Second operand 7 states. [2020-10-11 18:36:41,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:41,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:41,564 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:41,744 INFO L129 PetriNetUnfolder]: 107/329 cut-off events. [2020-10-11 18:36:41,744 INFO L130 PetriNetUnfolder]: For 648/682 co-relation queries the response was YES. [2020-10-11 18:36:41,746 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 329 events. 107/329 cut-off events. For 648/682 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1677 event pairs, 3 based on Foata normal form. 23/341 useless extension candidates. Maximal degree in co-relation 1102. Up to 148 conditions per place. [2020-10-11 18:36:41,748 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 19/83 dead transitions. [2020-10-11 18:36:41,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 467 flow [2020-10-11 18:36:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:36:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:36:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 600 transitions. [2020-10-11 18:36:41,752 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:36:41,752 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 600 transitions. [2020-10-11 18:36:41,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 600 transitions. [2020-10-11 18:36:41,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:41,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 600 transitions. [2020-10-11 18:36:41,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:36:41,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:36:41,756 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:36:41,756 INFO L185 Difference]: Start difference. First operand has 84 places, 58 transitions, 214 flow. Second operand 10 states and 600 transitions. [2020-10-11 18:36:41,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 467 flow [2020-10-11 18:36:41,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 443 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:36:41,762 INFO L241 Difference]: Finished difference. Result has 90 places, 61 transitions, 282 flow [2020-10-11 18:36:41,762 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=90, PETRI_TRANSITIONS=61} [2020-10-11 18:36:41,762 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2020-10-11 18:36:41,763 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 61 transitions, 282 flow [2020-10-11 18:36:41,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:41,763 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:41,763 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:41,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:36:41,764 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1646831056, now seen corresponding path program 1 times [2020-10-11 18:36:41,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:41,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250616523] [2020-10-11 18:36:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:41,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250616523] [2020-10-11 18:36:41,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:41,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:41,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434912013] [2020-10-11 18:36:41,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:41,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:41,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:42,170 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:42,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 61 transitions, 282 flow. Second operand 7 states. [2020-10-11 18:36:42,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:42,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:42,171 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:42,298 INFO L129 PetriNetUnfolder]: 64/363 cut-off events. [2020-10-11 18:36:42,298 INFO L130 PetriNetUnfolder]: For 1232/1303 co-relation queries the response was YES. [2020-10-11 18:36:42,300 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 363 events. 64/363 cut-off events. For 1232/1303 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2168 event pairs, 17 based on Foata normal form. 15/368 useless extension candidates. Maximal degree in co-relation 1226. Up to 109 conditions per place. [2020-10-11 18:36:42,302 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 8 selfloop transitions, 4 changer transitions 5/67 dead transitions. [2020-10-11 18:36:42,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 67 transitions, 344 flow [2020-10-11 18:36:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 410 transitions. [2020-10-11 18:36:42,304 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8488612836438924 [2020-10-11 18:36:42,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 410 transitions. [2020-10-11 18:36:42,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 410 transitions. [2020-10-11 18:36:42,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:42,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 410 transitions. [2020-10-11 18:36:42,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:42,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:42,307 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:42,308 INFO L185 Difference]: Start difference. First operand has 90 places, 61 transitions, 282 flow. Second operand 7 states and 410 transitions. [2020-10-11 18:36:42,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 67 transitions, 344 flow [2020-10-11 18:36:42,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 67 transitions, 288 flow, removed 20 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:42,313 INFO L241 Difference]: Finished difference. Result has 87 places, 61 transitions, 246 flow [2020-10-11 18:36:42,314 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2020-10-11 18:36:42,314 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 23 predicate places. [2020-10-11 18:36:42,314 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 246 flow [2020-10-11 18:36:42,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:42,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:42,314 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:42,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:36:42,315 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1064793618, now seen corresponding path program 2 times [2020-10-11 18:36:42,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:42,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637009682] [2020-10-11 18:36:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:42,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637009682] [2020-10-11 18:36:42,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:42,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:42,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339475701] [2020-10-11 18:36:42,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:42,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:42,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:42,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:42,617 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:42,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 246 flow. Second operand 7 states. [2020-10-11 18:36:42,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:42,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:42,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:42,767 INFO L129 PetriNetUnfolder]: 66/359 cut-off events. [2020-10-11 18:36:42,767 INFO L130 PetriNetUnfolder]: For 732/761 co-relation queries the response was YES. [2020-10-11 18:36:42,769 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 359 events. 66/359 cut-off events. For 732/761 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2028 event pairs, 18 based on Foata normal form. 12/358 useless extension candidates. Maximal degree in co-relation 968. Up to 96 conditions per place. [2020-10-11 18:36:42,771 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 14 selfloop transitions, 2 changer transitions 4/70 dead transitions. [2020-10-11 18:36:42,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 70 transitions, 336 flow [2020-10-11 18:36:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:36:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:36:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2020-10-11 18:36:42,773 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2020-10-11 18:36:42,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2020-10-11 18:36:42,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2020-10-11 18:36:42,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:42,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2020-10-11 18:36:42,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:36:42,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:36:42,777 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:36:42,777 INFO L185 Difference]: Start difference. First operand has 87 places, 61 transitions, 246 flow. Second operand 7 states and 413 transitions. [2020-10-11 18:36:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 70 transitions, 336 flow [2020-10-11 18:36:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 70 transitions, 302 flow, removed 12 selfloop flow, removed 7 redundant places. [2020-10-11 18:36:42,782 INFO L241 Difference]: Finished difference. Result has 88 places, 62 transitions, 245 flow [2020-10-11 18:36:42,783 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2020-10-11 18:36:42,783 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2020-10-11 18:36:42,783 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 245 flow [2020-10-11 18:36:42,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:42,783 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:42,784 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:42,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:36:42,784 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:42,784 INFO L82 PathProgramCache]: Analyzing trace with hash 893894326, now seen corresponding path program 3 times [2020-10-11 18:36:42,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:42,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673412620] [2020-10-11 18:36:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:42,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673412620] [2020-10-11 18:36:42,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:42,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:42,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611642652] [2020-10-11 18:36:42,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:42,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:42,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:42,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:43,151 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:43,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 245 flow. Second operand 7 states. [2020-10-11 18:36:43,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:43,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:43,152 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:43,293 INFO L129 PetriNetUnfolder]: 79/378 cut-off events. [2020-10-11 18:36:43,294 INFO L130 PetriNetUnfolder]: For 662/699 co-relation queries the response was YES. [2020-10-11 18:36:43,296 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 378 events. 79/378 cut-off events. For 662/699 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2218 event pairs, 24 based on Foata normal form. 15/378 useless extension candidates. Maximal degree in co-relation 1001. Up to 114 conditions per place. [2020-10-11 18:36:43,297 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 10 selfloop transitions, 2 changer transitions 7/68 dead transitions. [2020-10-11 18:36:43,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 68 transitions, 317 flow [2020-10-11 18:36:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:36:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:36:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2020-10-11 18:36:43,301 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 18:36:43,301 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2020-10-11 18:36:43,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2020-10-11 18:36:43,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:43,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2020-10-11 18:36:43,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:36:43,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:36:43,305 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:36:43,306 INFO L185 Difference]: Start difference. First operand has 88 places, 62 transitions, 245 flow. Second operand 8 states and 466 transitions. [2020-10-11 18:36:43,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 68 transitions, 317 flow [2020-10-11 18:36:43,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 68 transitions, 305 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-11 18:36:43,310 INFO L241 Difference]: Finished difference. Result has 93 places, 61 transitions, 244 flow [2020-10-11 18:36:43,310 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=93, PETRI_TRANSITIONS=61} [2020-10-11 18:36:43,310 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 29 predicate places. [2020-10-11 18:36:43,311 INFO L481 AbstractCegarLoop]: Abstraction has has 93 places, 61 transitions, 244 flow [2020-10-11 18:36:43,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:43,311 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:43,311 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:43,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:36:43,311 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 424605702, now seen corresponding path program 4 times [2020-10-11 18:36:43,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:43,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726336455] [2020-10-11 18:36:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726336455] [2020-10-11 18:36:43,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:43,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:36:43,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470918376] [2020-10-11 18:36:43,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:36:43,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:43,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:36:43,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:36:43,630 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:43,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 61 transitions, 244 flow. Second operand 7 states. [2020-10-11 18:36:43,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:43,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:43,631 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:43,775 INFO L129 PetriNetUnfolder]: 65/403 cut-off events. [2020-10-11 18:36:43,776 INFO L130 PetriNetUnfolder]: For 614/649 co-relation queries the response was YES. [2020-10-11 18:36:43,777 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 403 events. 65/403 cut-off events. For 614/649 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2700 event pairs, 23 based on Foata normal form. 9/402 useless extension candidates. Maximal degree in co-relation 989. Up to 113 conditions per place. [2020-10-11 18:36:43,779 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 9 selfloop transitions, 2 changer transitions 6/67 dead transitions. [2020-10-11 18:36:43,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 67 transitions, 318 flow [2020-10-11 18:36:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:36:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:36:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2020-10-11 18:36:43,781 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 18:36:43,781 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2020-10-11 18:36:43,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2020-10-11 18:36:43,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:43,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2020-10-11 18:36:43,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:36:43,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:36:43,784 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:36:43,784 INFO L185 Difference]: Start difference. First operand has 93 places, 61 transitions, 244 flow. Second operand 8 states and 466 transitions. [2020-10-11 18:36:43,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 67 transitions, 318 flow [2020-10-11 18:36:43,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 67 transitions, 298 flow, removed 7 selfloop flow, removed 6 redundant places. [2020-10-11 18:36:43,788 INFO L241 Difference]: Finished difference. Result has 94 places, 61 transitions, 248 flow [2020-10-11 18:36:43,788 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=94, PETRI_TRANSITIONS=61} [2020-10-11 18:36:43,789 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2020-10-11 18:36:43,789 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 61 transitions, 248 flow [2020-10-11 18:36:43,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:36:43,789 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:36:43,789 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:36:43,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 18:36:43,789 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:36:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:36:43,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1642325322, now seen corresponding path program 5 times [2020-10-11 18:36:43,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:36:43,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355727780] [2020-10-11 18:36:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:36:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:36:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:36:43,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355727780] [2020-10-11 18:36:43,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:36:43,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:36:43,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753394026] [2020-10-11 18:36:43,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:36:43,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:36:43,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:36:43,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:36:43,987 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:36:43,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 61 transitions, 248 flow. Second operand 8 states. [2020-10-11 18:36:43,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:36:43,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:36:43,989 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:36:44,171 INFO L129 PetriNetUnfolder]: 33/203 cut-off events. [2020-10-11 18:36:44,171 INFO L130 PetriNetUnfolder]: For 354/427 co-relation queries the response was YES. [2020-10-11 18:36:44,172 INFO L80 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 203 events. 33/203 cut-off events. For 354/427 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1044 event pairs, 0 based on Foata normal form. 40/239 useless extension candidates. Maximal degree in co-relation 588. Up to 64 conditions per place. [2020-10-11 18:36:44,173 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2020-10-11 18:36:44,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 66 transitions, 331 flow [2020-10-11 18:36:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:36:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:36:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2020-10-11 18:36:44,178 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2020-10-11 18:36:44,178 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2020-10-11 18:36:44,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2020-10-11 18:36:44,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:36:44,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2020-10-11 18:36:44,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:36:44,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:36:44,185 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:36:44,186 INFO L185 Difference]: Start difference. First operand has 94 places, 61 transitions, 248 flow. Second operand 11 states and 644 transitions. [2020-10-11 18:36:44,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 66 transitions, 331 flow [2020-10-11 18:36:44,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 66 transitions, 301 flow, removed 9 selfloop flow, removed 9 redundant places. [2020-10-11 18:36:44,189 INFO L241 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2020-10-11 18:36:44,189 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2020-10-11 18:36:44,189 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2020-10-11 18:36:44,189 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2020-10-11 18:36:44,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:36:44,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 18:36:44,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:36:44 BasicIcfg [2020-10-11 18:36:44,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:36:44,198 INFO L168 Benchmark]: Toolchain (without parser) took 7762.13 ms. Allocated memory was 254.8 MB in the beginning and 472.4 MB in the end (delta: 217.6 MB). Free memory was 210.2 MB in the beginning and 358.9 MB in the end (delta: -148.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:44,199 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:36:44,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.69 ms. Allocated memory was 254.8 MB in the beginning and 321.9 MB in the end (delta: 67.1 MB). Free memory was 210.2 MB in the beginning and 276.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:44,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 321.9 MB. Free memory was 276.8 MB in the beginning and 274.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:44,205 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 ms. Allocated memory is still 321.9 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:44,206 INFO L168 Benchmark]: RCFGBuilder took 389.02 ms. Allocated memory is still 321.9 MB. Free memory was 271.7 MB in the beginning and 249.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:44,211 INFO L168 Benchmark]: TraceAbstraction took 6576.85 ms. Allocated memory was 321.9 MB in the beginning and 472.4 MB in the end (delta: 150.5 MB). Free memory was 249.9 MB in the beginning and 358.9 MB in the end (delta: -109.1 MB). Peak memory consumption was 41.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:36:44,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 714.69 ms. Allocated memory was 254.8 MB in the beginning and 321.9 MB in the end (delta: 67.1 MB). Free memory was 210.2 MB in the beginning and 276.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 321.9 MB. Free memory was 276.8 MB in the beginning and 274.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.14 ms. Allocated memory is still 321.9 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 389.02 ms. Allocated memory is still 321.9 MB. Free memory was 271.7 MB in the beginning and 249.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 6576.85 ms. Allocated memory was 321.9 MB in the beginning and 472.4 MB in the end (delta: 150.5 MB). Free memory was 249.9 MB in the beginning and 358.9 MB in the end (delta: -109.1 MB). Peak memory consumption was 41.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 68 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: 6.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 334 SDslu, 911 SDs, 0 SdLazy, 833 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 501 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 55407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...