/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:20:38,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:20:38,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:20:38,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:20:38,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:20:38,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:20:39,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:20:39,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:20:39,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:20:39,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:20:39,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:20:39,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:20:39,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:20:39,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:20:39,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:20:39,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:20:39,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:20:39,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:20:39,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:20:39,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:20:39,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:20:39,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:20:39,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:20:39,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:20:39,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 21:20:39,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 21:20:39,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 21:20:39,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 21:20:39,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 21:20:39,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 21:20:39,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:20:39,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:20:39,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:20:39,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:20:39,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:20:39,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:20:39,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:20:39,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:20:39,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:20:39,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:20:39,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:20:39,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:20:39,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:20:39,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:20:39,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:20:39,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:20:39,048 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:20:39,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:20:39,048 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:20:39,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:20:39,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:20:39,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:20:39,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:20:39,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:20:39,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:20:39,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:20:39,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:20:39,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:20:39,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:20:39,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:20:39,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:20:39,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:20:39,311 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:20:39,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-06-10 21:20:39,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0637e68ae/c1ab92550a5c43dea10e21a522e1295b/FLAGfe84e0053 [2021-06-10 21:20:39,715 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:20:39,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-06-10 21:20:39,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0637e68ae/c1ab92550a5c43dea10e21a522e1295b/FLAGfe84e0053 [2021-06-10 21:20:40,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0637e68ae/c1ab92550a5c43dea10e21a522e1295b [2021-06-10 21:20:40,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:20:40,098 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:20:40,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:20:40,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:20:40,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:20:40,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a5c4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40, skipping insertion in model container [2021-06-10 21:20:40,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:20:40,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:20:40,233 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/safe017_tso.oepc.i[950,963] [2021-06-10 21:20:40,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:20:40,346 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:20:40,353 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/safe017_tso.oepc.i[950,963] [2021-06-10 21:20:40,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:20:40,414 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:20:40,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40 WrapperNode [2021-06-10 21:20:40,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:20:40,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:20:40,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:20:40,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:20:40,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:20:40,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:20:40,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:20:40,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:20:40,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (1/1) ... [2021-06-10 21:20:40,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:20:40,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:20:40,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:20:40,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:20:40,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (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 [2021-06-10 21:20:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:20:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:20:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:20:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:20:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:20:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:20:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:20:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:20:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:20:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:20:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:20:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:20:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:20:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:20:40,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:20:40,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:20:40,744 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:20:40,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:20:40 BoogieIcfgContainer [2021-06-10 21:20:40,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:20:40,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:20:40,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:20:40,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:20:40,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:20:40" (1/3) ... [2021-06-10 21:20:40,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebd2a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:20:40, skipping insertion in model container [2021-06-10 21:20:40,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:40" (2/3) ... [2021-06-10 21:20:40,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebd2a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:20:40, skipping insertion in model container [2021-06-10 21:20:40,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:20:40" (3/3) ... [2021-06-10 21:20:40,750 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2021-06-10 21:20:40,754 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:20:40,757 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:20:40,757 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:20:40,780 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,780 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,781 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,781 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,781 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,781 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,781 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,782 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,783 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,784 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,784 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,785 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,785 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,786 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,786 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,786 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,786 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,789 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,794 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,796 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:40,798 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:20:40,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:20:40,834 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:20:40,834 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:20:40,834 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:20:40,834 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:20:40,834 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:20:40,834 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:20:40,834 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:20:40,834 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:20:40,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-06-10 21:20:40,884 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-06-10 21:20:40,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:40,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 21:20:40,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-06-10 21:20:40,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:40,899 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:20:40,912 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:40,916 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:40,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:40,934 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-06-10 21:20:40,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:40,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-06-10 21:20:40,937 INFO L151 LiptonReduction]: Number of co-enabled transitions 804 [2021-06-10 21:20:41,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:41,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:41,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:41,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:41,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:41,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:41,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:41,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:41,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:41,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:41,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:20:41,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:41,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,632 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:20:41,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:20:41,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:41,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:41,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:41,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:41,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:41,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:41,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:41,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:42,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:42,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:42,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:42,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:42,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:42,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:42,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:42,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:20:42,600 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-10 21:20:42,807 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-10 21:20:42,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:42,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:42,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:42,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:42,878 INFO L163 LiptonReduction]: Checked pairs total: 1516 [2021-06-10 21:20:42,878 INFO L165 LiptonReduction]: Total number of compositions: 45 [2021-06-10 21:20:42,880 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1982 [2021-06-10 21:20:42,886 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-10 21:20:42,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:42,887 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:42,887 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:42,887 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1767820329, now seen corresponding path program 1 times [2021-06-10 21:20:42,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:42,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184069736] [2021-06-10 21:20:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184069736] [2021-06-10 21:20:43,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:43,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068940351] [2021-06-10 21:20:43,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:20:43,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:20:43,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:20:43,027 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 117 [2021-06-10 21:20:43,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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) [2021-06-10 21:20:43,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 117 [2021-06-10 21:20:43,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,034 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-10 21:20:43,034 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:43,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:20:43,034 INFO L132 encePairwiseOnDemand]: 116/117 looper letters, 0 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2021-06-10 21:20:43,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 41 flow [2021-06-10 21:20:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:20:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:20:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 221 transitions. [2021-06-10 21:20:43,042 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-10 21:20:43,042 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 221 transitions. [2021-06-10 21:20:43,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 221 transitions. [2021-06-10 21:20:43,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 221 transitions. [2021-06-10 21:20:43,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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) [2021-06-10 21:20:43,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2021-06-10 21:20:43,049 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2021-06-10 21:20:43,050 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 2 states and 221 transitions. [2021-06-10 21:20:43,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 41 flow [2021-06-10 21:20:43,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 38 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:20:43,053 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2021-06-10 21:20:43,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2021-06-10 21:20:43,054 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2021-06-10 21:20:43,054 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2021-06-10 21:20:43,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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) [2021-06-10 21:20:43,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,055 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:20:43,055 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1032144776, now seen corresponding path program 1 times [2021-06-10 21:20:43,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893630834] [2021-06-10 21:20:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,170 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:43,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893630834] [2021-06-10 21:20:43,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:43,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13247288] [2021-06-10 21:20:43,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:20:43,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:20:43,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:20:43,184 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2021-06-10 21:20:43,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,206 INFO L129 PetriNetUnfolder]: 45/132 cut-off events. [2021-06-10 21:20:43,206 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:43,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 132 events. 45/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 609 event pairs, 17 based on Foata normal form. 9/134 useless extension candidates. Maximal degree in co-relation 232. Up to 62 conditions per place. [2021-06-10 21:20:43,207 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 6 selfloop transitions, 6 changer transitions 0/21 dead transitions. [2021-06-10 21:20:43,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 72 flow [2021-06-10 21:20:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:20:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:20:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2021-06-10 21:20:43,209 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7720797720797721 [2021-06-10 21:20:43,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2021-06-10 21:20:43,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2021-06-10 21:20:43,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2021-06-10 21:20:43,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2021-06-10 21:20:43,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-06-10 21:20:43,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-06-10 21:20:43,212 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 271 transitions. [2021-06-10 21:20:43,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 72 flow [2021-06-10 21:20:43,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:43,213 INFO L241 Difference]: Finished difference. Result has 28 places, 21 transitions, 84 flow [2021-06-10 21:20:43,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2021-06-10 21:20:43,214 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2021-06-10 21:20:43,214 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 84 flow [2021-06-10 21:20:43,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2021-06-10 21:20:43,214 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,214 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:20:43,214 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1931717483, now seen corresponding path program 1 times [2021-06-10 21:20:43,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145872877] [2021-06-10 21:20:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145872877] [2021-06-10 21:20:43,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:43,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65475606] [2021-06-10 21:20:43,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:20:43,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:20:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:20:43,243 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 117 [2021-06-10 21:20:43,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2021-06-10 21:20:43,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 117 [2021-06-10 21:20:43,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,258 INFO L129 PetriNetUnfolder]: 30/98 cut-off events. [2021-06-10 21:20:43,258 INFO L130 PetriNetUnfolder]: For 35/82 co-relation queries the response was YES. [2021-06-10 21:20:43,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 98 events. 30/98 cut-off events. For 35/82 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 409 event pairs, 5 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 257. Up to 46 conditions per place. [2021-06-10 21:20:43,259 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 9 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2021-06-10 21:20:43,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 142 flow [2021-06-10 21:20:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:20:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:20:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-06-10 21:20:43,261 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8376068376068376 [2021-06-10 21:20:43,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-06-10 21:20:43,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-06-10 21:20:43,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-06-10 21:20:43,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2021-06-10 21:20:43,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-06-10 21:20:43,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-06-10 21:20:43,263 INFO L185 Difference]: Start difference. First operand has 28 places, 21 transitions, 84 flow. Second operand 3 states and 294 transitions. [2021-06-10 21:20:43,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 142 flow [2021-06-10 21:20:43,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:20:43,264 INFO L241 Difference]: Finished difference. Result has 29 places, 25 transitions, 113 flow [2021-06-10 21:20:43,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2021-06-10 21:20:43,264 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2021-06-10 21:20:43,264 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 113 flow [2021-06-10 21:20:43,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2021-06-10 21:20:43,265 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:20:43,265 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1931717421, now seen corresponding path program 1 times [2021-06-10 21:20:43,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625250301] [2021-06-10 21:20:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625250301] [2021-06-10 21:20:43,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:43,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964744928] [2021-06-10 21:20:43,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:20:43,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:20:43,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:20:43,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 117 [2021-06-10 21:20:43,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2021-06-10 21:20:43,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 117 [2021-06-10 21:20:43,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,301 INFO L129 PetriNetUnfolder]: 25/90 cut-off events. [2021-06-10 21:20:43,301 INFO L130 PetriNetUnfolder]: For 58/88 co-relation queries the response was YES. [2021-06-10 21:20:43,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 90 events. 25/90 cut-off events. For 58/88 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 354 event pairs, 6 based on Foata normal form. 3/90 useless extension candidates. Maximal degree in co-relation 216. Up to 38 conditions per place. [2021-06-10 21:20:43,302 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 1 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2021-06-10 21:20:43,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 121 flow [2021-06-10 21:20:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:20:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:20:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2021-06-10 21:20:43,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8404558404558404 [2021-06-10 21:20:43,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2021-06-10 21:20:43,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2021-06-10 21:20:43,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2021-06-10 21:20:43,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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) [2021-06-10 21:20:43,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-06-10 21:20:43,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-06-10 21:20:43,306 INFO L185 Difference]: Start difference. First operand has 29 places, 25 transitions, 113 flow. Second operand 3 states and 295 transitions. [2021-06-10 21:20:43,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 121 flow [2021-06-10 21:20:43,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:20:43,307 INFO L241 Difference]: Finished difference. Result has 31 places, 25 transitions, 119 flow [2021-06-10 21:20:43,307 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2021-06-10 21:20:43,307 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-06-10 21:20:43,307 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 119 flow [2021-06-10 21:20:43,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2021-06-10 21:20:43,307 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,307 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:20:43,308 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash 246301532, now seen corresponding path program 1 times [2021-06-10 21:20:43,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543056901] [2021-06-10 21:20:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,337 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:43,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543056901] [2021-06-10 21:20:43,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:20:43,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811413792] [2021-06-10 21:20:43,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:43,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:43,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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) [2021-06-10 21:20:43,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,376 INFO L129 PetriNetUnfolder]: 23/86 cut-off events. [2021-06-10 21:20:43,376 INFO L130 PetriNetUnfolder]: For 50/84 co-relation queries the response was YES. [2021-06-10 21:20:43,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 86 events. 23/86 cut-off events. For 50/84 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 324 event pairs, 3 based on Foata normal form. 12/97 useless extension candidates. Maximal degree in co-relation 260. Up to 35 conditions per place. [2021-06-10 21:20:43,377 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 12 selfloop transitions, 11 changer transitions 0/32 dead transitions. [2021-06-10 21:20:43,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 203 flow [2021-06-10 21:20:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:20:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:20:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2021-06-10 21:20:43,379 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7713675213675214 [2021-06-10 21:20:43,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2021-06-10 21:20:43,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2021-06-10 21:20:43,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2021-06-10 21:20:43,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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) [2021-06-10 21:20:43,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-06-10 21:20:43,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-06-10 21:20:43,381 INFO L185 Difference]: Start difference. First operand has 31 places, 25 transitions, 119 flow. Second operand 4 states and 361 transitions. [2021-06-10 21:20:43,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 203 flow [2021-06-10 21:20:43,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:20:43,383 INFO L241 Difference]: Finished difference. Result has 34 places, 30 transitions, 178 flow [2021-06-10 21:20:43,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2021-06-10 21:20:43,383 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2021-06-10 21:20:43,383 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 178 flow [2021-06-10 21:20:43,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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) [2021-06-10 21:20:43,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,383 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:20:43,384 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1723058562, now seen corresponding path program 1 times [2021-06-10 21:20:43,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458577575] [2021-06-10 21:20:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:43,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,436 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:43,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458577575] [2021-06-10 21:20:43,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:20:43,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248545472] [2021-06-10 21:20:43,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:43,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:43,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:43,446 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2021-06-10 21:20:43,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,464 INFO L129 PetriNetUnfolder]: 19/84 cut-off events. [2021-06-10 21:20:43,465 INFO L130 PetriNetUnfolder]: For 105/169 co-relation queries the response was YES. [2021-06-10 21:20:43,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 84 events. 19/84 cut-off events. For 105/169 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 339 event pairs, 2 based on Foata normal form. 13/95 useless extension candidates. Maximal degree in co-relation 295. Up to 32 conditions per place. [2021-06-10 21:20:43,466 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 8 selfloop transitions, 14 changer transitions 0/31 dead transitions. [2021-06-10 21:20:43,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 229 flow [2021-06-10 21:20:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:20:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:20:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2021-06-10 21:20:43,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7670940170940171 [2021-06-10 21:20:43,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2021-06-10 21:20:43,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2021-06-10 21:20:43,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2021-06-10 21:20:43,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-06-10 21:20:43,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-06-10 21:20:43,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-06-10 21:20:43,469 INFO L185 Difference]: Start difference. First operand has 34 places, 30 transitions, 178 flow. Second operand 4 states and 359 transitions. [2021-06-10 21:20:43,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 229 flow [2021-06-10 21:20:43,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:43,473 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 235 flow [2021-06-10 21:20:43,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-06-10 21:20:43,473 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-06-10 21:20:43,473 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 235 flow [2021-06-10 21:20:43,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2021-06-10 21:20:43,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:20:43,474 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1197948411, now seen corresponding path program 1 times [2021-06-10 21:20:43,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840076597] [2021-06-10 21:20:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840076597] [2021-06-10 21:20:43,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:20:43,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807671233] [2021-06-10 21:20:43,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:43,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:43,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:43,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 117 [2021-06-10 21:20:43,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-06-10 21:20:43,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 117 [2021-06-10 21:20:43,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,526 INFO L129 PetriNetUnfolder]: 17/100 cut-off events. [2021-06-10 21:20:43,526 INFO L130 PetriNetUnfolder]: For 296/337 co-relation queries the response was YES. [2021-06-10 21:20:43,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 100 events. 17/100 cut-off events. For 296/337 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 483 event pairs, 0 based on Foata normal form. 14/113 useless extension candidates. Maximal degree in co-relation 384. Up to 33 conditions per place. [2021-06-10 21:20:43,527 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 6 selfloop transitions, 6 changer transitions 7/35 dead transitions. [2021-06-10 21:20:43,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 311 flow [2021-06-10 21:20:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:20:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:20:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:20:43,528 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-06-10 21:20:43,528 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:20:43,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:20:43,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:20:43,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2021-06-10 21:20:43,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-06-10 21:20:43,530 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-06-10 21:20:43,530 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 235 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:20:43,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 311 flow [2021-06-10 21:20:43,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 299 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:43,533 INFO L241 Difference]: Finished difference. Result has 43 places, 27 transitions, 211 flow [2021-06-10 21:20:43,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2021-06-10 21:20:43,533 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2021-06-10 21:20:43,533 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 211 flow [2021-06-10 21:20:43,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-06-10 21:20:43,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:20:43,533 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1528453577, now seen corresponding path program 2 times [2021-06-10 21:20:43,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725654231] [2021-06-10 21:20:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:20:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725654231] [2021-06-10 21:20:43,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:20:43,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432080074] [2021-06-10 21:20:43,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:43,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:43,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:43,593 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2021-06-10 21:20:43,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,634 INFO L129 PetriNetUnfolder]: 95/231 cut-off events. [2021-06-10 21:20:43,635 INFO L130 PetriNetUnfolder]: For 777/845 co-relation queries the response was YES. [2021-06-10 21:20:43,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 231 events. 95/231 cut-off events. For 777/845 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1258 event pairs, 33 based on Foata normal form. 26/239 useless extension candidates. Maximal degree in co-relation 659. Up to 145 conditions per place. [2021-06-10 21:20:43,636 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 7 changer transitions 4/37 dead transitions. [2021-06-10 21:20:43,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 263 flow [2021-06-10 21:20:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:20:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:20:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-06-10 21:20:43,637 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7658119658119659 [2021-06-10 21:20:43,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-06-10 21:20:43,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-06-10 21:20:43,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-06-10 21:20:43,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-06-10 21:20:43,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-06-10 21:20:43,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-06-10 21:20:43,639 INFO L185 Difference]: Start difference. First operand has 43 places, 27 transitions, 211 flow. Second operand 5 states and 448 transitions. [2021-06-10 21:20:43,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 263 flow [2021-06-10 21:20:43,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 239 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-10 21:20:43,642 INFO L241 Difference]: Finished difference. Result has 46 places, 33 transitions, 237 flow [2021-06-10 21:20:43,642 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2021-06-10 21:20:43,642 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2021-06-10 21:20:43,642 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 237 flow [2021-06-10 21:20:43,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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) [2021-06-10 21:20:43,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:20:43,643 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,643 INFO L82 PathProgramCache]: Analyzing trace with hash 100391820, now seen corresponding path program 1 times [2021-06-10 21:20:43,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468599681] [2021-06-10 21:20:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:20:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468599681] [2021-06-10 21:20:43,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:20:43,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192690372] [2021-06-10 21:20:43,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:20:43,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:20:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:20:43,696 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2021-06-10 21:20:43,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,747 INFO L129 PetriNetUnfolder]: 54/174 cut-off events. [2021-06-10 21:20:43,747 INFO L130 PetriNetUnfolder]: For 735/942 co-relation queries the response was YES. [2021-06-10 21:20:43,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 174 events. 54/174 cut-off events. For 735/942 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 979 event pairs, 4 based on Foata normal form. 77/241 useless extension candidates. Maximal degree in co-relation 655. Up to 76 conditions per place. [2021-06-10 21:20:43,748 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 10 changer transitions 11/43 dead transitions. [2021-06-10 21:20:43,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 327 flow [2021-06-10 21:20:43,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:20:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:20:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2021-06-10 21:20:43,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7643467643467643 [2021-06-10 21:20:43,750 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2021-06-10 21:20:43,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2021-06-10 21:20:43,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2021-06-10 21:20:43,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 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) [2021-06-10 21:20:43,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-06-10 21:20:43,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-06-10 21:20:43,754 INFO L185 Difference]: Start difference. First operand has 46 places, 33 transitions, 237 flow. Second operand 7 states and 626 transitions. [2021-06-10 21:20:43,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 327 flow [2021-06-10 21:20:43,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:43,757 INFO L241 Difference]: Finished difference. Result has 55 places, 32 transitions, 271 flow [2021-06-10 21:20:43,757 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2021-06-10 21:20:43,757 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2021-06-10 21:20:43,757 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 271 flow [2021-06-10 21:20:43,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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) [2021-06-10 21:20:43,757 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,757 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:20:43,758 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1049838291, now seen corresponding path program 1 times [2021-06-10 21:20:43,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437119047] [2021-06-10 21:20:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:20:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437119047] [2021-06-10 21:20:43,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:20:43,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66885716] [2021-06-10 21:20:43,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:20:43,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:20:43,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:20:43,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2021-06-10 21:20:43,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,861 INFO L129 PetriNetUnfolder]: 22/88 cut-off events. [2021-06-10 21:20:43,862 INFO L130 PetriNetUnfolder]: For 605/881 co-relation queries the response was YES. [2021-06-10 21:20:43,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 88 events. 22/88 cut-off events. For 605/881 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 355 event pairs, 0 based on Foata normal form. 86/171 useless extension candidates. Maximal degree in co-relation 432. Up to 57 conditions per place. [2021-06-10 21:20:43,863 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 2 selfloop transitions, 10 changer transitions 14/36 dead transitions. [2021-06-10 21:20:43,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 36 transitions, 341 flow [2021-06-10 21:20:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 21:20:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 21:20:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 795 transitions. [2021-06-10 21:20:43,865 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7549857549857549 [2021-06-10 21:20:43,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 795 transitions. [2021-06-10 21:20:43,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 795 transitions. [2021-06-10 21:20:43,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 795 transitions. [2021-06-10 21:20:43,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.33333333333333) internal successors, (795), 9 states have internal predecessors, (795), 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) [2021-06-10 21:20:43,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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) [2021-06-10 21:20:43,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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) [2021-06-10 21:20:43,868 INFO L185 Difference]: Start difference. First operand has 55 places, 32 transitions, 271 flow. Second operand 9 states and 795 transitions. [2021-06-10 21:20:43,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 36 transitions, 341 flow [2021-06-10 21:20:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 36 transitions, 304 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 21:20:43,870 INFO L241 Difference]: Finished difference. Result has 59 places, 22 transitions, 188 flow [2021-06-10 21:20:43,871 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=59, PETRI_TRANSITIONS=22} [2021-06-10 21:20:43,871 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2021-06-10 21:20:43,871 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 22 transitions, 188 flow [2021-06-10 21:20:43,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2021-06-10 21:20:43,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:43,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:43,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 21:20:43,871 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:43,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:43,872 INFO L82 PathProgramCache]: Analyzing trace with hash -989031233, now seen corresponding path program 1 times [2021-06-10 21:20:43,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:43,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568351504] [2021-06-10 21:20:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:43,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:43,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:43,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:43,917 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:43,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:20:43,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568351504] [2021-06-10 21:20:43,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:43,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:20:43,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528633088] [2021-06-10 21:20:43,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:20:43,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:43,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:20:43,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:20:43,927 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:43,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 22 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2021-06-10 21:20:43,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:43,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:43,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:43,941 INFO L129 PetriNetUnfolder]: 6/28 cut-off events. [2021-06-10 21:20:43,941 INFO L130 PetriNetUnfolder]: For 101/107 co-relation queries the response was YES. [2021-06-10 21:20:43,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 28 events. 6/28 cut-off events. For 101/107 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 120. Up to 13 conditions per place. [2021-06-10 21:20:43,942 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-06-10 21:20:43,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 22 transitions, 191 flow [2021-06-10 21:20:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:20:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:20:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2021-06-10 21:20:43,943 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7464387464387464 [2021-06-10 21:20:43,943 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 524 transitions. [2021-06-10 21:20:43,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 524 transitions. [2021-06-10 21:20:43,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:43,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 524 transitions. [2021-06-10 21:20:43,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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) [2021-06-10 21:20:43,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2021-06-10 21:20:43,946 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2021-06-10 21:20:43,946 INFO L185 Difference]: Start difference. First operand has 59 places, 22 transitions, 188 flow. Second operand 6 states and 524 transitions. [2021-06-10 21:20:43,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 22 transitions, 191 flow [2021-06-10 21:20:43,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 22 transitions, 109 flow, removed 11 selfloop flow, removed 18 redundant places. [2021-06-10 21:20:43,947 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2021-06-10 21:20:43,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2021-06-10 21:20:43,947 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2021-06-10 21:20:43,947 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2021-06-10 21:20:43,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2021-06-10 21:20:43,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 21:20:43,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:20:43 BasicIcfg [2021-06-10 21:20:43,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:20:43,952 INFO L168 Benchmark]: Toolchain (without parser) took 3853.22 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 316.8 MB in the beginning and 389.7 MB in the end (delta: -72.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:20:43,952 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 354.4 MB. Free memory is still 334.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:20:43,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.80 ms. Allocated memory is still 354.4 MB. Free memory was 316.6 MB in the beginning and 317.6 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:43,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.26 ms. Allocated memory is still 354.4 MB. Free memory was 316.6 MB in the beginning and 315.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:20:43,952 INFO L168 Benchmark]: Boogie Preprocessor took 12.18 ms. Allocated memory is still 354.4 MB. Free memory was 315.5 MB in the beginning and 313.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:43,953 INFO L168 Benchmark]: RCFGBuilder took 295.70 ms. Allocated memory is still 354.4 MB. Free memory was 313.4 MB in the beginning and 291.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:43,953 INFO L168 Benchmark]: TraceAbstraction took 3204.51 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 290.4 MB in the beginning and 389.7 MB in the end (delta: -99.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:20:43,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 354.4 MB. Free memory is still 334.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 313.80 ms. Allocated memory is still 354.4 MB. Free memory was 316.6 MB in the beginning and 317.6 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.26 ms. Allocated memory is still 354.4 MB. Free memory was 316.6 MB in the beginning and 315.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.18 ms. Allocated memory is still 354.4 MB. Free memory was 315.5 MB in the beginning and 313.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 295.70 ms. Allocated memory is still 354.4 MB. Free memory was 313.4 MB in the beginning and 291.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3204.51 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 290.4 MB in the beginning and 389.7 MB in the end (delta: -99.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1962.6ms, 66 PlacesBefore, 26 PlacesAfterwards, 57 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 1516 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 909, positive: 838, positive conditional: 0, positive unconditional: 838, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 600, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 600, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 600, positive: 557, positive conditional: 0, positive unconditional: 557, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 122, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 909, positive: 274, positive conditional: 0, positive unconditional: 274, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 600, unknown conditional: 0, unknown unconditional: 600] , Statistics on independence cache: Total cache size (in pairs): 1061, Positive cache size: 1025, Positive conditional cache size: 0, Positive unconditional cache size: 1025, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3118.5ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 393.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2049.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 22 SDslu, 22 SDs, 0 SdLazy, 131 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 90.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=9, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 137.9ms SatisfiabilityAnalysisTime, 363.7ms InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...