/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:56:39,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:56:39,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:56:39,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:56:39,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:56:39,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:56:39,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:56:39,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:56:39,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:56:39,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:56:39,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:56:39,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:56:39,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:56:39,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:56:39,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:56:39,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:56:39,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:56:39,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:56:39,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:56:39,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:56:39,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:56:39,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:56:39,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:56:39,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:56:39,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:56:39,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 23:56:39,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 23:56:39,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 23:56:39,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 23:56:39,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 23:56:39,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 23:56:39,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 23:56:39,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 23:56:39,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:56:39,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:56:39,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:56:39,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 23:56:39,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:56:39,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:56:39,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:56:39,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:56:39,416 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:56:39,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:56:39,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:56:39,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:56:39,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:56:39,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:56:39,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:56:39,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:56:39,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:56:39,418 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:56:39,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:56:39,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:56:39,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:56:39,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:56:39,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:56:39,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:56:39,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:56:39,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:56:39,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:56:39,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:56:39,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:56:39,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:56:39,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:56:39,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:56:39,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:56:39,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:56:39,423 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:56:39,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:56:39,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:56:39,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:56:39,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:56:39,967 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:56:39,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-04-28 23:56:40,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab0edceb/497b1ca9ea7a43d5a6ce07344d526ced/FLAG55527fe0c [2021-04-28 23:56:40,963 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:56:40,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-04-28 23:56:40,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab0edceb/497b1ca9ea7a43d5a6ce07344d526ced/FLAG55527fe0c [2021-04-28 23:56:41,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab0edceb/497b1ca9ea7a43d5a6ce07344d526ced [2021-04-28 23:56:41,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:56:41,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:56:41,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:56:41,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:56:41,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:56:41,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:41,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2154cf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41, skipping insertion in model container [2021-04-28 23:56:41,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:41,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:56:41,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:56:41,521 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i[950,963] [2021-04-28 23:56:41,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:56:41,750 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:56:41,764 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i[950,963] [2021-04-28 23:56:41,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:56:41,924 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:56:41,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41 WrapperNode [2021-04-28 23:56:41,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:56:41,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:56:41,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:56:41,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:56:41,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:56:42,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:56:42,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:56:42,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:56:42,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (1/1) ... [2021-04-28 23:56:42,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:56:42,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:56:42,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:56:42,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:56:42,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (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 [2021-04-28 23:56:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:56:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:56:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:56:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:56:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:56:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:56:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:56:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:56:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:56:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:56:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-04-28 23:56:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-04-28 23:56:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:56:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:56:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:56:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:56:42,196 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:56:42,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:56:42,701 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:56:42,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:56:42 BoogieIcfgContainer [2021-04-28 23:56:42,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:56:42,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:56:42,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:56:42,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:56:42,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:56:41" (1/3) ... [2021-04-28 23:56:42,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d80c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:56:42, skipping insertion in model container [2021-04-28 23:56:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:56:41" (2/3) ... [2021-04-28 23:56:42,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d80c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:56:42, skipping insertion in model container [2021-04-28 23:56:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:56:42" (3/3) ... [2021-04-28 23:56:42,716 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-04-28 23:56:42,726 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:56:42,733 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:56:42,735 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:56:42,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,775 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,777 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,777 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,781 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,782 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,783 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,784 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,784 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,784 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,785 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,785 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,785 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,786 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,786 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,786 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,787 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,787 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,787 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,788 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,788 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,789 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,789 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,790 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,790 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,790 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,790 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,794 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,795 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,795 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,801 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,801 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,802 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,802 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,804 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,809 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:56:42,811 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:56:42,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-28 23:56:42,878 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:56:42,878 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:56:42,878 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:56:42,878 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:56:42,879 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:56:42,879 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:56:42,879 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:56:42,879 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:56:42,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-04-28 23:56:42,949 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-04-28 23:56:42,949 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:56:42,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-04-28 23:56:42,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 85 transitions, 190 flow [2021-04-28 23:56:42,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 67 transitions, 146 flow [2021-04-28 23:56:42,969 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:42,990 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions, 146 flow [2021-04-28 23:56:42,995 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 67 transitions, 146 flow [2021-04-28 23:56:42,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions, 146 flow [2021-04-28 23:56:43,021 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-04-28 23:56:43,022 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:56:43,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 1/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-04-28 23:56:43,027 INFO L146 LiptonReduction]: Number of co-enabled transitions 1250 [2021-04-28 23:56:48,176 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:56:48,546 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:56:48,703 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:56:49,734 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:56:49,892 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:56:50,052 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:56:50,207 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:56:50,374 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:56:51,686 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:51,863 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:52,016 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:52,191 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:52,498 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:56:52,656 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:52,830 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:53,303 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:53,480 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:53,704 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-04-28 23:56:53,945 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-04-28 23:56:54,209 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-04-28 23:56:54,476 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-04-28 23:56:54,929 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:55,114 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:56:55,215 INFO L158 LiptonReduction]: Checked pairs total: 10607 [2021-04-28 23:56:55,215 INFO L160 LiptonReduction]: Total number of compositions: 121 [2021-04-28 23:56:55,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12253 [2021-04-28 23:56:55,254 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2021-04-28 23:56:55,254 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:56:55,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:55,256 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:55,256 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:55,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:55,268 INFO L82 PathProgramCache]: Analyzing trace with hash 888822923, now seen corresponding path program 1 times [2021-04-28 23:56:55,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:55,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044371218] [2021-04-28 23:56:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:55,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:55,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:55,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044371218] [2021-04-28 23:56:55,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:55,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:56:55,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802558470] [2021-04-28 23:56:55,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:56:55,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:55,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:56:55,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:56:55,695 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2021-04-28 23:56:55,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:55,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:55,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2021-04-28 23:56:55,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:56:55,821 INFO L129 PetriNetUnfolder]: 79/352 cut-off events. [2021-04-28 23:56:55,821 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:56:55,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 352 events. 79/352 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2474 event pairs, 41 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 464. Up to 123 conditions per place. [2021-04-28 23:56:55,827 INFO L132 encePairwiseOnDemand]: 194/206 looper letters, 5 selfloop transitions, 3 changer transitions 43/93 dead transitions. [2021-04-28 23:56:55,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 250 flow [2021-04-28 23:56:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:56:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:56:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2021-04-28 23:56:55,847 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7734627831715211 [2021-04-28 23:56:55,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2021-04-28 23:56:55,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2021-04-28 23:56:55,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:56:55,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2021-04-28 23:56:55,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:55,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:55,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:55,874 INFO L185 Difference]: Start difference. First operand has 98 places, 85 transitions, 182 flow. Second operand 3 states and 478 transitions. [2021-04-28 23:56:55,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 250 flow [2021-04-28 23:56:55,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-28 23:56:55,883 INFO L241 Difference]: Finished difference. Result has 97 places, 49 transitions, 121 flow [2021-04-28 23:56:55,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=97, PETRI_TRANSITIONS=49} [2021-04-28 23:56:55,887 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2021-04-28 23:56:55,887 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:55,888 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 49 transitions, 121 flow [2021-04-28 23:56:55,888 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 49 transitions, 121 flow [2021-04-28 23:56:55,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 49 transitions, 121 flow [2021-04-28 23:56:55,897 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2021-04-28 23:56:55,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:56:55,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 234 event pairs, 1 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 74. Up to 10 conditions per place. [2021-04-28 23:56:55,900 INFO L146 LiptonReduction]: Number of co-enabled transitions 1300 [2021-04-28 23:56:55,920 INFO L158 LiptonReduction]: Checked pairs total: 574 [2021-04-28 23:56:55,921 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:56:55,921 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-04-28 23:56:55,923 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 121 flow [2021-04-28 23:56:55,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:55,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:55,925 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:55,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:56:55,925 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:55,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2040143300, now seen corresponding path program 1 times [2021-04-28 23:56:55,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:55,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841337203] [2021-04-28 23:56:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:56,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:56,010 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:56:56,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:56:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:56,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841337203] [2021-04-28 23:56:56,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:56,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:56:56,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17828654] [2021-04-28 23:56:56,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:56:56,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:56:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:56:56,026 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 206 [2021-04-28 23:56:56,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:56,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 206 [2021-04-28 23:56:56,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:56:56,100 INFO L129 PetriNetUnfolder]: 89/342 cut-off events. [2021-04-28 23:56:56,100 INFO L130 PetriNetUnfolder]: For 61/198 co-relation queries the response was YES. [2021-04-28 23:56:56,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 342 events. 89/342 cut-off events. For 61/198 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2241 event pairs, 34 based on Foata normal form. 19/233 useless extension candidates. Maximal degree in co-relation 602. Up to 101 conditions per place. [2021-04-28 23:56:56,107 INFO L132 encePairwiseOnDemand]: 198/206 looper letters, 12 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2021-04-28 23:56:56,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 198 flow [2021-04-28 23:56:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:56:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:56:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 519 transitions. [2021-04-28 23:56:56,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6298543689320388 [2021-04-28 23:56:56,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 519 transitions. [2021-04-28 23:56:56,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 519 transitions. [2021-04-28 23:56:56,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:56:56,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 519 transitions. [2021-04-28 23:56:56,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,120 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,120 INFO L185 Difference]: Start difference. First operand has 59 places, 49 transitions, 121 flow. Second operand 4 states and 519 transitions. [2021-04-28 23:56:56,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 198 flow [2021-04-28 23:56:56,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:56:56,123 INFO L241 Difference]: Finished difference. Result has 64 places, 56 transitions, 194 flow [2021-04-28 23:56:56,124 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2021-04-28 23:56:56,125 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -34 predicate places. [2021-04-28 23:56:56,125 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:56,125 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 56 transitions, 194 flow [2021-04-28 23:56:56,126 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 56 transitions, 194 flow [2021-04-28 23:56:56,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 56 transitions, 194 flow [2021-04-28 23:56:56,189 INFO L129 PetriNetUnfolder]: 72/314 cut-off events. [2021-04-28 23:56:56,190 INFO L130 PetriNetUnfolder]: For 104/156 co-relation queries the response was YES. [2021-04-28 23:56:56,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 314 events. 72/314 cut-off events. For 104/156 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2159 event pairs, 21 based on Foata normal form. 5/198 useless extension candidates. Maximal degree in co-relation 605. Up to 88 conditions per place. [2021-04-28 23:56:56,203 INFO L146 LiptonReduction]: Number of co-enabled transitions 1618 [2021-04-28 23:56:56,214 INFO L158 LiptonReduction]: Checked pairs total: 31 [2021-04-28 23:56:56,214 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:56:56,214 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 89 [2021-04-28 23:56:56,216 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 194 flow [2021-04-28 23:56:56,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:56,218 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:56,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:56:56,218 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash -539729948, now seen corresponding path program 1 times [2021-04-28 23:56:56,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:56,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103420458] [2021-04-28 23:56:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:56,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:56,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:56,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103420458] [2021-04-28 23:56:56,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:56,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:56:56,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790626918] [2021-04-28 23:56:56,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:56:56,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:56:56,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:56:56,294 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 206 [2021-04-28 23:56:56,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:56,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 206 [2021-04-28 23:56:56,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:56:56,377 INFO L129 PetriNetUnfolder]: 71/350 cut-off events. [2021-04-28 23:56:56,377 INFO L130 PetriNetUnfolder]: For 294/403 co-relation queries the response was YES. [2021-04-28 23:56:56,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 350 events. 71/350 cut-off events. For 294/403 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2593 event pairs, 20 based on Foata normal form. 19/227 useless extension candidates. Maximal degree in co-relation 734. Up to 92 conditions per place. [2021-04-28 23:56:56,383 INFO L132 encePairwiseOnDemand]: 201/206 looper letters, 8 selfloop transitions, 4 changer transitions 6/65 dead transitions. [2021-04-28 23:56:56,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 272 flow [2021-04-28 23:56:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:56:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:56:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2021-04-28 23:56:56,387 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6601941747572816 [2021-04-28 23:56:56,387 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2021-04-28 23:56:56,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2021-04-28 23:56:56,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:56:56,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2021-04-28 23:56:56,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,395 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,395 INFO L185 Difference]: Start difference. First operand has 64 places, 56 transitions, 194 flow. Second operand 4 states and 544 transitions. [2021-04-28 23:56:56,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 272 flow [2021-04-28 23:56:56,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:56:56,400 INFO L241 Difference]: Finished difference. Result has 68 places, 57 transitions, 229 flow [2021-04-28 23:56:56,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2021-04-28 23:56:56,401 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -30 predicate places. [2021-04-28 23:56:56,401 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:56,402 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 57 transitions, 229 flow [2021-04-28 23:56:56,402 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 57 transitions, 229 flow [2021-04-28 23:56:56,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 229 flow [2021-04-28 23:56:56,451 INFO L129 PetriNetUnfolder]: 53/304 cut-off events. [2021-04-28 23:56:56,451 INFO L130 PetriNetUnfolder]: For 203/221 co-relation queries the response was YES. [2021-04-28 23:56:56,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 304 events. 53/304 cut-off events. For 203/221 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2267 event pairs, 18 based on Foata normal form. 5/187 useless extension candidates. Maximal degree in co-relation 656. Up to 77 conditions per place. [2021-04-28 23:56:56,467 INFO L146 LiptonReduction]: Number of co-enabled transitions 1650 [2021-04-28 23:56:56,478 INFO L158 LiptonReduction]: Checked pairs total: 34 [2021-04-28 23:56:56,478 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:56:56,479 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-04-28 23:56:56,480 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 229 flow [2021-04-28 23:56:56,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:56,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:56,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:56:56,482 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:56,483 INFO L82 PathProgramCache]: Analyzing trace with hash 72133914, now seen corresponding path program 1 times [2021-04-28 23:56:56,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:56,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078817766] [2021-04-28 23:56:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:56,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:56:56,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:56,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:56,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078817766] [2021-04-28 23:56:56,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:56,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:56:56,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957782000] [2021-04-28 23:56:56,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:56:56,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:56,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:56:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:56:56,558 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 206 [2021-04-28 23:56:56,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:56,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 206 [2021-04-28 23:56:56,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:56:56,655 INFO L129 PetriNetUnfolder]: 44/357 cut-off events. [2021-04-28 23:56:56,655 INFO L130 PetriNetUnfolder]: For 365/400 co-relation queries the response was YES. [2021-04-28 23:56:56,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 357 events. 44/357 cut-off events. For 365/400 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2920 event pairs, 20 based on Foata normal form. 13/213 useless extension candidates. Maximal degree in co-relation 773. Up to 77 conditions per place. [2021-04-28 23:56:56,660 INFO L132 encePairwiseOnDemand]: 202/206 looper letters, 5 selfloop transitions, 5 changer transitions 5/60 dead transitions. [2021-04-28 23:56:56,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 277 flow [2021-04-28 23:56:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:56:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:56:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2021-04-28 23:56:56,665 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6563106796116505 [2021-04-28 23:56:56,665 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2021-04-28 23:56:56,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2021-04-28 23:56:56,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:56:56,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2021-04-28 23:56:56,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,674 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 229 flow. Second operand 5 states and 676 transitions. [2021-04-28 23:56:56,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 277 flow [2021-04-28 23:56:56,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 60 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:56:56,680 INFO L241 Difference]: Finished difference. Result has 72 places, 55 transitions, 236 flow [2021-04-28 23:56:56,681 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2021-04-28 23:56:56,681 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2021-04-28 23:56:56,681 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:56,682 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 55 transitions, 236 flow [2021-04-28 23:56:56,682 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 55 transitions, 236 flow [2021-04-28 23:56:56,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 55 transitions, 236 flow [2021-04-28 23:56:56,727 INFO L129 PetriNetUnfolder]: 34/311 cut-off events. [2021-04-28 23:56:56,728 INFO L130 PetriNetUnfolder]: For 416/440 co-relation queries the response was YES. [2021-04-28 23:56:56,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 311 events. 34/311 cut-off events. For 416/440 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2518 event pairs, 18 based on Foata normal form. 4/179 useless extension candidates. Maximal degree in co-relation 674. Up to 64 conditions per place. [2021-04-28 23:56:56,741 INFO L146 LiptonReduction]: Number of co-enabled transitions 1568 [2021-04-28 23:56:56,751 INFO L158 LiptonReduction]: Checked pairs total: 32 [2021-04-28 23:56:56,752 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:56:56,752 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 71 [2021-04-28 23:56:56,754 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 236 flow [2021-04-28 23:56:56,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,755 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:56,755 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:56,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:56:56,756 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:56,756 INFO L82 PathProgramCache]: Analyzing trace with hash 448798213, now seen corresponding path program 1 times [2021-04-28 23:56:56,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:56,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605489527] [2021-04-28 23:56:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:56,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:56,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:56,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605489527] [2021-04-28 23:56:56,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:56,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:56:56,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389041984] [2021-04-28 23:56:56,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:56:56,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:56,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:56:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:56:56,808 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 206 [2021-04-28 23:56:56,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:56,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 206 [2021-04-28 23:56:56,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:56:56,862 INFO L129 PetriNetUnfolder]: 31/302 cut-off events. [2021-04-28 23:56:56,862 INFO L130 PetriNetUnfolder]: For 446/475 co-relation queries the response was YES. [2021-04-28 23:56:56,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 302 events. 31/302 cut-off events. For 446/475 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2363 event pairs, 16 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 662. Up to 59 conditions per place. [2021-04-28 23:56:56,866 INFO L132 encePairwiseOnDemand]: 203/206 looper letters, 1 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2021-04-28 23:56:56,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 55 transitions, 244 flow [2021-04-28 23:56:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:56:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:56:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2021-04-28 23:56:56,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7152103559870551 [2021-04-28 23:56:56,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2021-04-28 23:56:56,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2021-04-28 23:56:56,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:56:56,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2021-04-28 23:56:56,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,876 INFO L185 Difference]: Start difference. First operand has 71 places, 55 transitions, 236 flow. Second operand 3 states and 442 transitions. [2021-04-28 23:56:56,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 55 transitions, 244 flow [2021-04-28 23:56:56,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 55 transitions, 236 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-28 23:56:56,882 INFO L241 Difference]: Finished difference. Result has 72 places, 55 transitions, 239 flow [2021-04-28 23:56:56,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=69, 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=3, PETRI_FLOW=239, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2021-04-28 23:56:56,883 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2021-04-28 23:56:56,883 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:56,883 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 55 transitions, 239 flow [2021-04-28 23:56:56,884 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 55 transitions, 239 flow [2021-04-28 23:56:56,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 55 transitions, 239 flow [2021-04-28 23:56:56,925 INFO L129 PetriNetUnfolder]: 31/312 cut-off events. [2021-04-28 23:56:56,925 INFO L130 PetriNetUnfolder]: For 305/345 co-relation queries the response was YES. [2021-04-28 23:56:56,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 312 events. 31/312 cut-off events. For 305/345 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2508 event pairs, 14 based on Foata normal form. 7/175 useless extension candidates. Maximal degree in co-relation 668. Up to 59 conditions per place. [2021-04-28 23:56:56,938 INFO L146 LiptonReduction]: Number of co-enabled transitions 1566 [2021-04-28 23:56:56,944 INFO L158 LiptonReduction]: Checked pairs total: 32 [2021-04-28 23:56:56,945 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:56:56,945 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-04-28 23:56:56,946 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 239 flow [2021-04-28 23:56:56,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:56,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:56,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:56,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:56:56,948 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:56,949 INFO L82 PathProgramCache]: Analyzing trace with hash 265019614, now seen corresponding path program 1 times [2021-04-28 23:56:56,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:56,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964225341] [2021-04-28 23:56:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:57,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:57,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:56:57,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:57,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:57,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:57,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964225341] [2021-04-28 23:56:57,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:57,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:56:57,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128342098] [2021-04-28 23:56:57,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:56:57,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:57,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:56:57,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:56:57,030 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 206 [2021-04-28 23:56:57,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:57,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:57,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 206 [2021-04-28 23:56:57,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:56:57,118 INFO L129 PetriNetUnfolder]: 21/342 cut-off events. [2021-04-28 23:56:57,118 INFO L130 PetriNetUnfolder]: For 433/495 co-relation queries the response was YES. [2021-04-28 23:56:57,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 342 events. 21/342 cut-off events. For 433/495 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2984 event pairs, 18 based on Foata normal form. 12/194 useless extension candidates. Maximal degree in co-relation 783. Up to 60 conditions per place. [2021-04-28 23:56:57,122 INFO L132 encePairwiseOnDemand]: 202/206 looper letters, 4 selfloop transitions, 4 changer transitions 3/56 dead transitions. [2021-04-28 23:56:57,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 56 transitions, 269 flow [2021-04-28 23:56:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:56:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:56:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2021-04-28 23:56:57,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6601941747572816 [2021-04-28 23:56:57,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2021-04-28 23:56:57,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2021-04-28 23:56:57,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:56:57,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2021-04-28 23:56:57,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:57,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:57,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:57,138 INFO L185 Difference]: Start difference. First operand has 72 places, 55 transitions, 239 flow. Second operand 5 states and 680 transitions. [2021-04-28 23:56:57,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 56 transitions, 269 flow [2021-04-28 23:56:57,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 56 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:56:57,143 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 232 flow [2021-04-28 23:56:57,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2021-04-28 23:56:57,144 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2021-04-28 23:56:57,144 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:56:57,145 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 53 transitions, 232 flow [2021-04-28 23:56:57,145 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 53 transitions, 232 flow [2021-04-28 23:56:57,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 53 transitions, 232 flow [2021-04-28 23:56:57,185 INFO L129 PetriNetUnfolder]: 18/293 cut-off events. [2021-04-28 23:56:57,188 INFO L130 PetriNetUnfolder]: For 380/416 co-relation queries the response was YES. [2021-04-28 23:56:57,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 293 events. 18/293 cut-off events. For 380/416 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2412 event pairs, 15 based on Foata normal form. 6/157 useless extension candidates. Maximal degree in co-relation 625. Up to 47 conditions per place. [2021-04-28 23:56:57,199 INFO L146 LiptonReduction]: Number of co-enabled transitions 1464 [2021-04-28 23:56:57,204 INFO L158 LiptonReduction]: Checked pairs total: 30 [2021-04-28 23:56:57,205 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:56:57,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 61 [2021-04-28 23:56:57,212 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 232 flow [2021-04-28 23:56:57,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:57,213 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:56:57,213 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:56:57,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:56:57,214 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:56:57,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:56:57,214 INFO L82 PathProgramCache]: Analyzing trace with hash 273753523, now seen corresponding path program 1 times [2021-04-28 23:56:57,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:56:57,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571455194] [2021-04-28 23:56:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:56:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:56:57,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:56:57,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:56:57,287 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-04-28 23:56:57,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-28 23:56:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:56:57,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571455194] [2021-04-28 23:56:57,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:56:57,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:56:57,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352843230] [2021-04-28 23:56:57,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:56:57,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:56:57,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:56:57,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:56:57,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-28 23:56:57,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:56:57,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:56:57,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-28 23:56:57,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:57:34,149 INFO L129 PetriNetUnfolder]: 153938/216004 cut-off events. [2021-04-28 23:57:34,150 INFO L130 PetriNetUnfolder]: For 62768/66059 co-relation queries the response was YES. [2021-04-28 23:57:35,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436699 conditions, 216004 events. 153938/216004 cut-off events. For 62768/66059 co-relation queries the response was YES. Maximal size of possible extension queue 35487. Compared 2029549 event pairs, 88764 based on Foata normal form. 573/59863 useless extension candidates. Maximal degree in co-relation 436677. Up to 137323 conditions per place. [2021-04-28 23:57:35,613 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 36 selfloop transitions, 34 changer transitions 0/98 dead transitions. [2021-04-28 23:57:35,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 462 flow [2021-04-28 23:57:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:57:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:57:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2021-04-28 23:57:35,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6970873786407767 [2021-04-28 23:57:35,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2021-04-28 23:57:35,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2021-04-28 23:57:35,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:57:35,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2021-04-28 23:57:35,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:57:35,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:57:35,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:57:35,626 INFO L185 Difference]: Start difference. First operand has 74 places, 53 transitions, 232 flow. Second operand 5 states and 718 transitions. [2021-04-28 23:57:35,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 462 flow [2021-04-28 23:57:35,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 448 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-04-28 23:57:35,655 INFO L241 Difference]: Finished difference. Result has 77 places, 85 transitions, 474 flow [2021-04-28 23:57:35,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2021-04-28 23:57:35,656 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2021-04-28 23:57:35,656 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:57:35,656 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 85 transitions, 474 flow [2021-04-28 23:57:35,656 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 85 transitions, 474 flow [2021-04-28 23:57:35,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 85 transitions, 474 flow [2021-04-28 23:58:01,470 INFO L129 PetriNetUnfolder]: 137165/194015 cut-off events. [2021-04-28 23:58:01,471 INFO L130 PetriNetUnfolder]: For 49400/239164 co-relation queries the response was YES. [2021-04-28 23:58:02,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555967 conditions, 194015 events. 137165/194015 cut-off events. For 49400/239164 co-relation queries the response was YES. Maximal size of possible extension queue 31668. Compared 1826631 event pairs, 83508 based on Foata normal form. 85/54081 useless extension candidates. Maximal degree in co-relation 555945. Up to 191880 conditions per place. [2021-04-28 23:58:04,446 INFO L146 LiptonReduction]: Number of co-enabled transitions 2118 [2021-04-28 23:58:04,748 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:58:04,749 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:58:04,749 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29093 [2021-04-28 23:58:04,752 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 474 flow [2021-04-28 23:58:04,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:04,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:58:04,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:58:04,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 23:58:04,753 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:58:04,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:58:04,754 INFO L82 PathProgramCache]: Analyzing trace with hash -148084615, now seen corresponding path program 1 times [2021-04-28 23:58:04,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:58:04,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734996652] [2021-04-28 23:58:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:58:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:58:04,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:58:04,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:58:04,873 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:58:04,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:58:04,885 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:58:04,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:58:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:58:04,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734996652] [2021-04-28 23:58:04,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:58:04,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:58:04,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489076906] [2021-04-28 23:58:04,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:58:04,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:58:04,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:58:04,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:58:04,905 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-28 23:58:04,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:04,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:58:04,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-28 23:58:04,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:58:47,772 INFO L129 PetriNetUnfolder]: 187124/272926 cut-off events. [2021-04-28 23:58:47,773 INFO L130 PetriNetUnfolder]: For 100108/1019137 co-relation queries the response was YES. [2021-04-28 23:58:48,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1056481 conditions, 272926 events. 187124/272926 cut-off events. For 100108/1019137 co-relation queries the response was YES. Maximal size of possible extension queue 49293. Compared 2820005 event pairs, 43269 based on Foata normal form. 909/85249 useless extension candidates. Maximal degree in co-relation 1056457. Up to 264735 conditions per place. [2021-04-28 23:58:49,293 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 34 selfloop transitions, 66 changer transitions 3/131 dead transitions. [2021-04-28 23:58:49,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 933 flow [2021-04-28 23:58:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 23:58:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 23:58:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1008 transitions. [2021-04-28 23:58:49,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6990291262135923 [2021-04-28 23:58:49,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1008 transitions. [2021-04-28 23:58:49,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1008 transitions. [2021-04-28 23:58:49,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:58:49,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1008 transitions. [2021-04-28 23:58:49,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:58:49,311 INFO L185 Difference]: Start difference. First operand has 77 places, 85 transitions, 474 flow. Second operand 7 states and 1008 transitions. [2021-04-28 23:58:49,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 933 flow [2021-04-28 23:58:50,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 131 transitions, 933 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 23:58:50,556 INFO L241 Difference]: Finished difference. Result has 86 places, 117 transitions, 924 flow [2021-04-28 23:58:50,557 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=924, PETRI_PLACES=86, PETRI_TRANSITIONS=117} [2021-04-28 23:58:50,558 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -12 predicate places. [2021-04-28 23:58:50,558 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:58:50,559 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 117 transitions, 924 flow [2021-04-28 23:58:50,559 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 117 transitions, 924 flow [2021-04-28 23:58:50,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 117 transitions, 924 flow [2021-04-28 23:59:26,463 INFO L129 PetriNetUnfolder]: 148307/231230 cut-off events. [2021-04-28 23:59:26,463 INFO L130 PetriNetUnfolder]: For 265176/2232491 co-relation queries the response was YES. [2021-04-28 23:59:28,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1074758 conditions, 231230 events. 148307/231230 cut-off events. For 265176/2232491 co-relation queries the response was YES. Maximal size of possible extension queue 41217. Compared 2624038 event pairs, 43203 based on Foata normal form. 94/68804 useless extension candidates. Maximal degree in co-relation 1074731. Up to 226164 conditions per place. [2021-04-28 23:59:30,706 INFO L146 LiptonReduction]: Number of co-enabled transitions 2998 [2021-04-28 23:59:31,120 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:59:31,120 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:59:31,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40563 [2021-04-28 23:59:31,122 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 117 transitions, 924 flow [2021-04-28 23:59:31,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:31,123 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:59:31,123 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:59:31,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-28 23:59:31,129 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:59:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:59:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash -204332646, now seen corresponding path program 1 times [2021-04-28 23:59:31,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:59:31,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434164881] [2021-04-28 23:59:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:59:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:59:31,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:59:31,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:59:31,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:59:31,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:59:31,184 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:59:31,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:59:31,200 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:59:31,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:59:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:59:31,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434164881] [2021-04-28 23:59:31,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:59:31,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 23:59:31,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067213062] [2021-04-28 23:59:31,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 23:59:31,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:59:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 23:59:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 23:59:31,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-28 23:59:31,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 117 transitions, 924 flow. Second operand has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:59:31,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:59:31,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-28 23:59:31,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:00:20,551 INFO L129 PetriNetUnfolder]: 158117/257779 cut-off events. [2021-04-29 00:00:20,552 INFO L130 PetriNetUnfolder]: For 243452/3548130 co-relation queries the response was YES. [2021-04-29 00:00:21,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1449494 conditions, 257779 events. 158117/257779 cut-off events. For 243452/3548130 co-relation queries the response was YES. Maximal size of possible extension queue 57600. Compared 3176183 event pairs, 8115 based on Foata normal form. 1066/81176 useless extension candidates. Maximal degree in co-relation 1449465. Up to 249741 conditions per place. [2021-04-29 00:00:22,261 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 26 selfloop transitions, 104 changer transitions 18/176 dead transitions. [2021-04-29 00:00:22,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 176 transitions, 1738 flow [2021-04-29 00:00:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 00:00:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 00:00:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1298 transitions. [2021-04-29 00:00:22,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7001078748651565 [2021-04-29 00:00:22,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1298 transitions. [2021-04-29 00:00:22,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1298 transitions. [2021-04-29 00:00:22,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:00:22,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1298 transitions. [2021-04-29 00:00:22,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.22222222222223) internal successors, (1298), 9 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:22,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:22,287 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:00:22,288 INFO L185 Difference]: Start difference. First operand has 86 places, 117 transitions, 924 flow. Second operand 9 states and 1298 transitions. [2021-04-29 00:00:22,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 176 transitions, 1738 flow [2021-04-29 00:01:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 176 transitions, 1523 flow, removed 79 selfloop flow, removed 3 redundant places. [2021-04-29 00:01:54,199 INFO L241 Difference]: Finished difference. Result has 94 places, 155 transitions, 1414 flow [2021-04-29 00:01:54,199 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1414, PETRI_PLACES=94, PETRI_TRANSITIONS=155} [2021-04-29 00:01:54,200 INFO L343 CegarLoopForPetriNet]: 98 programPoint places, -4 predicate places. [2021-04-29 00:01:54,200 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:01:54,200 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 155 transitions, 1414 flow [2021-04-29 00:01:54,201 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 155 transitions, 1414 flow [2021-04-29 00:01:54,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 155 transitions, 1414 flow [2021-04-29 00:02:23,778 INFO L129 PetriNetUnfolder]: 92192/176444 cut-off events. [2021-04-29 00:02:23,778 INFO L130 PetriNetUnfolder]: For 847394/1460234 co-relation queries the response was YES. [2021-04-29 00:02:24,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1019237 conditions, 176444 events. 92192/176444 cut-off events. For 847394/1460234 co-relation queries the response was YES. Maximal size of possible extension queue 40804. Compared 2528825 event pairs, 8115 based on Foata normal form. 47/51668 useless extension candidates. Maximal degree in co-relation 1019207. Up to 139677 conditions per place. [2021-04-29 00:02:27,092 INFO L146 LiptonReduction]: Number of co-enabled transitions 3610 [2021-04-29 00:02:27,571 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:02:27,571 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:02:27,571 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33371 [2021-04-29 00:02:27,573 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 155 transitions, 1414 flow [2021-04-29 00:02:27,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:02:27,574 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:02:27,574 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:02:27,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 00:02:27,575 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:02:27,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:02:27,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1018027159, now seen corresponding path program 1 times [2021-04-29 00:02:27,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:02:27,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289109279] [2021-04-29 00:02:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:02:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:02:27,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:02:27,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:02:27,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:02:27,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:02:27,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:02:27,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:02:27,704 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-29 00:02:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-29 00:02:27,714 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:02:27,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:02:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:02:27,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289109279] [2021-04-29 00:02:27,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:02:27,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 00:02:27,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125667008] [2021-04-29 00:02:27,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 00:02:27,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:02:27,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 00:02:27,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-29 00:02:27,728 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 206 [2021-04-29 00:02:27,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 155 transitions, 1414 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:02:27,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:02:27,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 206 [2021-04-29 00:02:27,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:03:01,850 INFO L129 PetriNetUnfolder]: 88997/179290 cut-off events. [2021-04-29 00:03:01,850 INFO L130 PetriNetUnfolder]: For 398742/1542592 co-relation queries the response was YES. [2021-04-29 00:03:03,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1205282 conditions, 179290 events. 88997/179290 cut-off events. For 398742/1542592 co-relation queries the response was YES. Maximal size of possible extension queue 40590. Compared 2728013 event pairs, 15 based on Foata normal form. 853/56249 useless extension candidates. Maximal degree in co-relation 1205250. Up to 138282 conditions per place. [2021-04-29 00:03:03,450 INFO L132 encePairwiseOnDemand]: 185/206 looper letters, 5 selfloop transitions, 85 changer transitions 73/188 dead transitions. [2021-04-29 00:03:03,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 188 transitions, 2042 flow [2021-04-29 00:03:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-29 00:03:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-04-29 00:03:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1561 transitions. [2021-04-29 00:03:03,456 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6888790820829656 [2021-04-29 00:03:03,456 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1561 transitions. [2021-04-29 00:03:03,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1561 transitions. [2021-04-29 00:03:03,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:03:03,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1561 transitions. [2021-04-29 00:03:03,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 141.9090909090909) internal successors, (1561), 11 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:03:03,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:03:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:03:03,472 INFO L185 Difference]: Start difference. First operand has 94 places, 155 transitions, 1414 flow. Second operand 11 states and 1561 transitions. [2021-04-29 00:03:03,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 188 transitions, 2042 flow