/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/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:25:35,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:25:35,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:25:35,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:25:35,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:25:35,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:25:35,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:25:35,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:25:35,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:25:35,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:25:35,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:25:35,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:25:35,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:25:35,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:25:35,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:25:35,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:25:35,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:25:35,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:25:35,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:25:35,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:25:35,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:25:35,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:25:35,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:25:35,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:25:35,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:25:35,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:25:35,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:25:35,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:25:35,093 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 [2021-03-11 20:25:35,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:25:35,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:25:35,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:25:35,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:25:35,107 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:25:35,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:25:35,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:25:35,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:25:35,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:25:35,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:25:35,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:25:35,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:25:35,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:25:35,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:25:35,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:25:35,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:25:35,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:25:35,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:25:35,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:25:35,348 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:25:35,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2021-03-11 20:25:35,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8f1592d/c4fb51c43fb5470bb16f44030b4e78e6/FLAG438d17e48 [2021-03-11 20:25:35,996 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:25:35,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2021-03-11 20:25:36,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8f1592d/c4fb51c43fb5470bb16f44030b4e78e6/FLAG438d17e48 [2021-03-11 20:25:36,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb8f1592d/c4fb51c43fb5470bb16f44030b4e78e6 [2021-03-11 20:25:36,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:25:36,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:25:36,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:36,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:25:36,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:25:36,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3055e199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36, skipping insertion in model container [2021-03-11 20:25:36,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:25:36,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:25:36,571 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/safe019_tso.opt.i[949,962] [2021-03-11 20:25:36,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:36,724 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:25:36,731 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/safe019_tso.opt.i[949,962] [2021-03-11 20:25:36,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:36,800 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:25:36,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36 WrapperNode [2021-03-11 20:25:36,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:36,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:36,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:25:36,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:25:36,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:36,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:25:36,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:25:36,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:25:36,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:25:36,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:25:36,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:25:36,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:25:36,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (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 [2021-03-11 20:25:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:25:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:25:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:25:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:25:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:25:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:25:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:25:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:25:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:25:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:25:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:25:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:25:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:25:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:25:36,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:25:36,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:25:36,888 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:25:37,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:25:37,161 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:25:37,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:37 BoogieIcfgContainer [2021-03-11 20:25:37,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:25:37,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:25:37,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:25:37,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:25:37,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:25:36" (1/3) ... [2021-03-11 20:25:37,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a22301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:37, skipping insertion in model container [2021-03-11 20:25:37,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (2/3) ... [2021-03-11 20:25:37,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a22301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:37, skipping insertion in model container [2021-03-11 20:25:37,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:37" (3/3) ... [2021-03-11 20:25:37,167 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2021-03-11 20:25:37,170 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:25:37,173 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:25:37,173 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:25:37,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,198 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,199 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,200 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,204 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,204 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,205 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,207 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:37,208 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:25:37,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 20:25:37,231 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:25:37,231 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:25:37,232 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:25:37,232 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:25:37,232 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:25:37,232 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:25:37,232 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:25:37,232 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:25:37,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 20:25:37,262 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-03-11 20:25:37,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:37,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 20:25:37,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 20:25:37,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:37,269 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:25:37,275 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:37,276 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:37,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:37,288 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-03-11 20:25:37,288 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:37,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-11 20:25:37,289 INFO L116 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-11 20:25:39,052 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 20:25:39,256 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 20:25:39,338 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2021-03-11 20:25:39,339 INFO L133 LiptonReduction]: Total number of compositions: 52 [2021-03-11 20:25:39,340 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2073 [2021-03-11 20:25:39,352 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 20:25:39,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:39,352 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,353 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,353 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1488768315, now seen corresponding path program 1 times [2021-03-11 20:25:39,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54531558] [2021-03-11 20:25:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,507 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54531558] [2021-03-11 20:25:39,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:39,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440738204] [2021-03-11 20:25:39,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:39,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:39,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:39,529 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:39,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2021-03-11 20:25:39,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:39,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,579 INFO L129 PetriNetUnfolder]: 45/127 cut-off events. [2021-03-11 20:25:39,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:39,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 127 events. 45/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 574 event pairs, 27 based on Foata normal form. 24/141 useless extension candidates. Maximal degree in co-relation 220. Up to 78 conditions per place. [2021-03-11 20:25:39,583 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 5 selfloop transitions, 6 changer transitions 0/24 dead transitions. [2021-03-11 20:25:39,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 82 flow [2021-03-11 20:25:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2021-03-11 20:25:39,595 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7946859903381642 [2021-03-11 20:25:39,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2021-03-11 20:25:39,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2021-03-11 20:25:39,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2021-03-11 20:25:39,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2021-03-11 20:25:39,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-11 20:25:39,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-11 20:25:39,608 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 329 transitions. [2021-03-11 20:25:39,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 82 flow [2021-03-11 20:25:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 78 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:39,611 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2021-03-11 20:25:39,612 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-11 20:25:39,613 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2021-03-11 20:25:39,613 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2021-03-11 20:25:39,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2021-03-11 20:25:39,613 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:25:39,614 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash -690613596, now seen corresponding path program 1 times [2021-03-11 20:25:39,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845128446] [2021-03-11 20:25:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,700 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845128446] [2021-03-11 20:25:39,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:39,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170889240] [2021-03-11 20:25:39,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:39,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:39,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:39,712 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:39,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2021-03-11 20:25:39,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:39,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,741 INFO L129 PetriNetUnfolder]: 35/115 cut-off events. [2021-03-11 20:25:39,741 INFO L130 PetriNetUnfolder]: For 24/98 co-relation queries the response was YES. [2021-03-11 20:25:39,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 115 events. 35/115 cut-off events. For 24/98 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 500 event pairs, 9 based on Foata normal form. 5/115 useless extension candidates. Maximal degree in co-relation 284. Up to 63 conditions per place. [2021-03-11 20:25:39,743 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 9 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-11 20:25:39,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 138 flow [2021-03-11 20:25:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 434 transitions. [2021-03-11 20:25:39,745 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7862318840579711 [2021-03-11 20:25:39,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 434 transitions. [2021-03-11 20:25:39,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 434 transitions. [2021-03-11 20:25:39,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 434 transitions. [2021-03-11 20:25:39,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2021-03-11 20:25:39,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-03-11 20:25:39,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-03-11 20:25:39,748 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 434 transitions. [2021-03-11 20:25:39,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 138 flow [2021-03-11 20:25:39,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:39,751 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 113 flow [2021-03-11 20:25:39,751 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-11 20:25:39,751 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2021-03-11 20:25:39,751 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 113 flow [2021-03-11 20:25:39,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2021-03-11 20:25:39,752 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,752 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:25:39,752 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1092821475, now seen corresponding path program 1 times [2021-03-11 20:25:39,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786657434] [2021-03-11 20:25:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786657434] [2021-03-11 20:25:39,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:39,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570296304] [2021-03-11 20:25:39,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:39,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:39,799 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 138 [2021-03-11 20:25:39,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2021-03-11 20:25:39,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 138 [2021-03-11 20:25:39,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,807 INFO L129 PetriNetUnfolder]: 28/97 cut-off events. [2021-03-11 20:25:39,808 INFO L130 PetriNetUnfolder]: For 66/90 co-relation queries the response was YES. [2021-03-11 20:25:39,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 97 events. 28/97 cut-off events. For 66/90 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 385 event pairs, 14 based on Foata normal form. 3/94 useless extension candidates. Maximal degree in co-relation 232. Up to 53 conditions per place. [2021-03-11 20:25:39,808 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 1 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-11 20:25:39,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 123 flow [2021-03-11 20:25:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2021-03-11 20:25:39,809 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2021-03-11 20:25:39,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2021-03-11 20:25:39,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2021-03-11 20:25:39,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2021-03-11 20:25:39,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2021-03-11 20:25:39,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-11 20:25:39,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-11 20:25:39,811 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 113 flow. Second operand 3 states and 358 transitions. [2021-03-11 20:25:39,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 123 flow [2021-03-11 20:25:39,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:39,813 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 117 flow [2021-03-11 20:25:39,813 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-11 20:25:39,813 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2021-03-11 20:25:39,813 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 117 flow [2021-03-11 20:25:39,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2021-03-11 20:25:39,813 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,813 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:25:39,814 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash 48292788, now seen corresponding path program 1 times [2021-03-11 20:25:39,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664970440] [2021-03-11 20:25:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,840 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664970440] [2021-03-11 20:25:39,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054634] [2021-03-11 20:25:39,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:39,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:39,850 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 138 [2021-03-11 20:25:39,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2021-03-11 20:25:39,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 138 [2021-03-11 20:25:39,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,902 INFO L129 PetriNetUnfolder]: 107/249 cut-off events. [2021-03-11 20:25:39,902 INFO L130 PetriNetUnfolder]: For 201/469 co-relation queries the response was YES. [2021-03-11 20:25:39,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 249 events. 107/249 cut-off events. For 201/469 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1195 event pairs, 12 based on Foata normal form. 13/256 useless extension candidates. Maximal degree in co-relation 722. Up to 117 conditions per place. [2021-03-11 20:25:39,905 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 12 selfloop transitions, 23 changer transitions 0/47 dead transitions. [2021-03-11 20:25:39,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 306 flow [2021-03-11 20:25:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-03-11 20:25:39,907 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2021-03-11 20:25:39,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-03-11 20:25:39,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-03-11 20:25:39,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-03-11 20:25:39,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:39,910 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:39,910 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 117 flow. Second operand 5 states and 537 transitions. [2021-03-11 20:25:39,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 306 flow [2021-03-11 20:25:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:39,913 INFO L241 Difference]: Finished difference. Result has 43 places, 42 transitions, 307 flow [2021-03-11 20:25:39,913 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2021-03-11 20:25:39,913 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2021-03-11 20:25:39,913 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 307 flow [2021-03-11 20:25:39,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2021-03-11 20:25:39,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,913 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:25:39,914 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1043875580, now seen corresponding path program 2 times [2021-03-11 20:25:39,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056906262] [2021-03-11 20:25:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,957 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056906262] [2021-03-11 20:25:39,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:39,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154892275] [2021-03-11 20:25:39,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:39,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:39,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:39,965 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 138 [2021-03-11 20:25:39,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2021-03-11 20:25:39,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 138 [2021-03-11 20:25:39,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,013 INFO L129 PetriNetUnfolder]: 89/249 cut-off events. [2021-03-11 20:25:40,014 INFO L130 PetriNetUnfolder]: For 786/1368 co-relation queries the response was YES. [2021-03-11 20:25:40,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 249 events. 89/249 cut-off events. For 786/1368 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1399 event pairs, 8 based on Foata normal form. 28/273 useless extension candidates. Maximal degree in co-relation 1021. Up to 114 conditions per place. [2021-03-11 20:25:40,016 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 14 selfloop transitions, 9 changer transitions 18/53 dead transitions. [2021-03-11 20:25:40,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 490 flow [2021-03-11 20:25:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2021-03-11 20:25:40,017 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7710144927536232 [2021-03-11 20:25:40,017 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2021-03-11 20:25:40,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2021-03-11 20:25:40,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2021-03-11 20:25:40,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2021-03-11 20:25:40,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:40,020 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:40,020 INFO L185 Difference]: Start difference. First operand has 43 places, 42 transitions, 307 flow. Second operand 5 states and 532 transitions. [2021-03-11 20:25:40,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 490 flow [2021-03-11 20:25:40,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:25:40,024 INFO L241 Difference]: Finished difference. Result has 49 places, 29 transitions, 219 flow [2021-03-11 20:25:40,025 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2021-03-11 20:25:40,025 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2021-03-11 20:25:40,025 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 219 flow [2021-03-11 20:25:40,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2021-03-11 20:25:40,025 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,025 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:25:40,027 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2065605621, now seen corresponding path program 1 times [2021-03-11 20:25:40,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320771137] [2021-03-11 20:25:40,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,065 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:40,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320771137] [2021-03-11 20:25:40,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:40,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602230460] [2021-03-11 20:25:40,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:40,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:40,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:40,075 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:40,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-11 20:25:40,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:40,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,096 INFO L129 PetriNetUnfolder]: 24/88 cut-off events. [2021-03-11 20:25:40,096 INFO L130 PetriNetUnfolder]: For 299/389 co-relation queries the response was YES. [2021-03-11 20:25:40,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 88 events. 24/88 cut-off events. For 299/389 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 339 event pairs, 1 based on Foata normal form. 4/89 useless extension candidates. Maximal degree in co-relation 401. Up to 47 conditions per place. [2021-03-11 20:25:40,097 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 11 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2021-03-11 20:25:40,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 306 flow [2021-03-11 20:25:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 436 transitions. [2021-03-11 20:25:40,099 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7898550724637681 [2021-03-11 20:25:40,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 436 transitions. [2021-03-11 20:25:40,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 436 transitions. [2021-03-11 20:25:40,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 436 transitions. [2021-03-11 20:25:40,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-03-11 20:25:40,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-03-11 20:25:40,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-03-11 20:25:40,101 INFO L185 Difference]: Start difference. First operand has 49 places, 29 transitions, 219 flow. Second operand 4 states and 436 transitions. [2021-03-11 20:25:40,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 306 flow [2021-03-11 20:25:40,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 194 flow, removed 20 selfloop flow, removed 11 redundant places. [2021-03-11 20:25:40,103 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 166 flow [2021-03-11 20:25:40,103 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-11 20:25:40,104 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2021-03-11 20:25:40,104 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 166 flow [2021-03-11 20:25:40,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-11 20:25:40,104 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,104 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:25:40,104 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1918014580, now seen corresponding path program 1 times [2021-03-11 20:25:40,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968006639] [2021-03-11 20:25:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,152 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:40,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968006639] [2021-03-11 20:25:40,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:40,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338806207] [2021-03-11 20:25:40,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:40,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:40,162 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:40,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2021-03-11 20:25:40,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:40,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,212 INFO L129 PetriNetUnfolder]: 24/103 cut-off events. [2021-03-11 20:25:40,212 INFO L130 PetriNetUnfolder]: For 131/182 co-relation queries the response was YES. [2021-03-11 20:25:40,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 103 events. 24/103 cut-off events. For 131/182 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 470 event pairs, 4 based on Foata normal form. 7/107 useless extension candidates. Maximal degree in co-relation 335. Up to 54 conditions per place. [2021-03-11 20:25:40,213 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 8 selfloop transitions, 9 changer transitions 8/39 dead transitions. [2021-03-11 20:25:40,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 263 flow [2021-03-11 20:25:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2021-03-11 20:25:40,214 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7869565217391304 [2021-03-11 20:25:40,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2021-03-11 20:25:40,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2021-03-11 20:25:40,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2021-03-11 20:25:40,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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) [2021-03-11 20:25:40,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:40,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:40,218 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 166 flow. Second operand 5 states and 543 transitions. [2021-03-11 20:25:40,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 263 flow [2021-03-11 20:25:40,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:40,219 INFO L241 Difference]: Finished difference. Result has 47 places, 30 transitions, 188 flow [2021-03-11 20:25:40,220 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2021-03-11 20:25:40,220 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2021-03-11 20:25:40,220 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 188 flow [2021-03-11 20:25:40,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2021-03-11 20:25:40,220 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,220 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:25:40,220 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,221 INFO L82 PathProgramCache]: Analyzing trace with hash 388887100, now seen corresponding path program 2 times [2021-03-11 20:25:40,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057546230] [2021-03-11 20:25:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,268 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,275 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057546230] [2021-03-11 20:25:40,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:40,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401398669] [2021-03-11 20:25:40,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:40,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:40,284 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2021-03-11 20:25:40,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,340 INFO L129 PetriNetUnfolder]: 301/553 cut-off events. [2021-03-11 20:25:40,340 INFO L130 PetriNetUnfolder]: For 1400/1558 co-relation queries the response was YES. [2021-03-11 20:25:40,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 553 events. 301/553 cut-off events. For 1400/1558 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 3095 event pairs, 151 based on Foata normal form. 42/528 useless extension candidates. Maximal degree in co-relation 1414. Up to 372 conditions per place. [2021-03-11 20:25:40,343 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 10 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2021-03-11 20:25:40,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 254 flow [2021-03-11 20:25:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-03-11 20:25:40,344 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2021-03-11 20:25:40,344 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-03-11 20:25:40,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-03-11 20:25:40,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-03-11 20:25:40,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:40,347 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2021-03-11 20:25:40,347 INFO L185 Difference]: Start difference. First operand has 47 places, 30 transitions, 188 flow. Second operand 5 states and 537 transitions. [2021-03-11 20:25:40,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 254 flow [2021-03-11 20:25:40,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 230 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:40,350 INFO L241 Difference]: Finished difference. Result has 50 places, 39 transitions, 239 flow [2021-03-11 20:25:40,350 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2021-03-11 20:25:40,350 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2021-03-11 20:25:40,350 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 239 flow [2021-03-11 20:25:40,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 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) [2021-03-11 20:25:40,351 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,351 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:25:40,351 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2029087293, now seen corresponding path program 1 times [2021-03-11 20:25:40,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139010209] [2021-03-11 20:25:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:40,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139010209] [2021-03-11 20:25:40,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:40,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142280022] [2021-03-11 20:25:40,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:40,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:40,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:40,376 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 138 [2021-03-11 20:25:40,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 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) [2021-03-11 20:25:40,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 138 [2021-03-11 20:25:40,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,418 INFO L129 PetriNetUnfolder]: 327/604 cut-off events. [2021-03-11 20:25:40,418 INFO L130 PetriNetUnfolder]: For 1849/2246 co-relation queries the response was YES. [2021-03-11 20:25:40,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 604 events. 327/604 cut-off events. For 1849/2246 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 3491 event pairs, 159 based on Foata normal form. 31/550 useless extension candidates. Maximal degree in co-relation 1951. Up to 499 conditions per place. [2021-03-11 20:25:40,421 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 7 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2021-03-11 20:25:40,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 263 flow [2021-03-11 20:25:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-03-11 20:25:40,422 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8526570048309179 [2021-03-11 20:25:40,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-03-11 20:25:40,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-03-11 20:25:40,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-03-11 20:25:40,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2021-03-11 20:25:40,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-11 20:25:40,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2021-03-11 20:25:40,424 INFO L185 Difference]: Start difference. First operand has 50 places, 39 transitions, 239 flow. Second operand 3 states and 353 transitions. [2021-03-11 20:25:40,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 263 flow [2021-03-11 20:25:40,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:40,428 INFO L241 Difference]: Finished difference. Result has 52 places, 39 transitions, 251 flow [2021-03-11 20:25:40,428 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2021-03-11 20:25:40,428 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2021-03-11 20:25:40,428 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 251 flow [2021-03-11 20:25:40,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 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) [2021-03-11 20:25:40,428 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,428 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:25:40,429 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1347353325, now seen corresponding path program 1 times [2021-03-11 20:25:40,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564643604] [2021-03-11 20:25:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,474 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,479 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564643604] [2021-03-11 20:25:40,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:40,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166603969] [2021-03-11 20:25:40,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:40,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:40,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:40,487 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,553 INFO L129 PetriNetUnfolder]: 302/598 cut-off events. [2021-03-11 20:25:40,553 INFO L130 PetriNetUnfolder]: For 1952/3573 co-relation queries the response was YES. [2021-03-11 20:25:40,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 598 events. 302/598 cut-off events. For 1952/3573 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 3577 event pairs, 47 based on Foata normal form. 174/714 useless extension candidates. Maximal degree in co-relation 2391. Up to 515 conditions per place. [2021-03-11 20:25:40,556 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 10 selfloop transitions, 19 changer transitions 0/52 dead transitions. [2021-03-11 20:25:40,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 385 flow [2021-03-11 20:25:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:25:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:25:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2021-03-11 20:25:40,558 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7784679089026915 [2021-03-11 20:25:40,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 752 transitions. [2021-03-11 20:25:40,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 752 transitions. [2021-03-11 20:25:40,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 752 transitions. [2021-03-11 20:25:40,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 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) [2021-03-11 20:25:40,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 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) [2021-03-11 20:25:40,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 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) [2021-03-11 20:25:40,561 INFO L185 Difference]: Start difference. First operand has 52 places, 39 transitions, 251 flow. Second operand 7 states and 752 transitions. [2021-03-11 20:25:40,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 385 flow [2021-03-11 20:25:40,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 378 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:40,564 INFO L241 Difference]: Finished difference. Result has 60 places, 48 transitions, 378 flow [2021-03-11 20:25:40,565 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2021-03-11 20:25:40,565 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2021-03-11 20:25:40,565 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 378 flow [2021-03-11 20:25:40,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,566 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,566 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:25:40,566 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1181727270, now seen corresponding path program 1 times [2021-03-11 20:25:40,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920274270] [2021-03-11 20:25:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,602 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,606 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920274270] [2021-03-11 20:25:40,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:25:40,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406255476] [2021-03-11 20:25:40,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:25:40,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:25:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:25:40,618 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 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) [2021-03-11 20:25:40,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,708 INFO L129 PetriNetUnfolder]: 269/560 cut-off events. [2021-03-11 20:25:40,708 INFO L130 PetriNetUnfolder]: For 3493/7048 co-relation queries the response was YES. [2021-03-11 20:25:40,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 560 events. 269/560 cut-off events. For 3493/7048 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 3470 event pairs, 6 based on Foata normal form. 300/804 useless extension candidates. Maximal degree in co-relation 3132. Up to 499 conditions per place. [2021-03-11 20:25:40,711 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 6 selfloop transitions, 28 changer transitions 4/61 dead transitions. [2021-03-11 20:25:40,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 580 flow [2021-03-11 20:25:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:25:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:25:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 967 transitions. [2021-03-11 20:25:40,713 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7785829307568438 [2021-03-11 20:25:40,714 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 967 transitions. [2021-03-11 20:25:40,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 967 transitions. [2021-03-11 20:25:40,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 967 transitions. [2021-03-11 20:25:40,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.44444444444444) internal successors, (967), 9 states have internal predecessors, (967), 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) [2021-03-11 20:25:40,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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) [2021-03-11 20:25:40,717 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 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) [2021-03-11 20:25:40,717 INFO L185 Difference]: Start difference. First operand has 60 places, 48 transitions, 378 flow. Second operand 9 states and 967 transitions. [2021-03-11 20:25:40,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 580 flow [2021-03-11 20:25:40,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 523 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:40,723 INFO L241 Difference]: Finished difference. Result has 67 places, 57 transitions, 499 flow [2021-03-11 20:25:40,723 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=499, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2021-03-11 20:25:40,723 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2021-03-11 20:25:40,723 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 499 flow [2021-03-11 20:25:40,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 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) [2021-03-11 20:25:40,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,723 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:25:40,724 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash 495447136, now seen corresponding path program 1 times [2021-03-11 20:25:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394579045] [2021-03-11 20:25:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:40,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,762 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:40,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394579045] [2021-03-11 20:25:40,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:25:40,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964627788] [2021-03-11 20:25:40,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:40,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:40,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:40,773 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:40,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 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) [2021-03-11 20:25:40,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:40,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,837 INFO L129 PetriNetUnfolder]: 320/669 cut-off events. [2021-03-11 20:25:40,837 INFO L130 PetriNetUnfolder]: For 5212/6116 co-relation queries the response was YES. [2021-03-11 20:25:40,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3622 conditions, 669 events. 320/669 cut-off events. For 5212/6116 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 4366 event pairs, 7 based on Foata normal form. 18/613 useless extension candidates. Maximal degree in co-relation 3595. Up to 454 conditions per place. [2021-03-11 20:25:40,841 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 8 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2021-03-11 20:25:40,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 543 flow [2021-03-11 20:25:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:25:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:25:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2021-03-11 20:25:40,842 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7801932367149759 [2021-03-11 20:25:40,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 646 transitions. [2021-03-11 20:25:40,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 646 transitions. [2021-03-11 20:25:40,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 646 transitions. [2021-03-11 20:25:40,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 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) [2021-03-11 20:25:40,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2021-03-11 20:25:40,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 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) [2021-03-11 20:25:40,845 INFO L185 Difference]: Start difference. First operand has 67 places, 57 transitions, 499 flow. Second operand 6 states and 646 transitions. [2021-03-11 20:25:40,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 543 flow [2021-03-11 20:25:40,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 446 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:40,865 INFO L241 Difference]: Finished difference. Result has 69 places, 57 transitions, 425 flow [2021-03-11 20:25:40,866 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=425, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2021-03-11 20:25:40,866 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2021-03-11 20:25:40,866 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 425 flow [2021-03-11 20:25:40,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 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) [2021-03-11 20:25:40,866 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,866 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:25:40,866 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,867 INFO L82 PathProgramCache]: Analyzing trace with hash -355813714, now seen corresponding path program 2 times [2021-03-11 20:25:40,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8951522] [2021-03-11 20:25:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,906 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,912 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8951522] [2021-03-11 20:25:40,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:25:40,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839162462] [2021-03-11 20:25:40,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:25:40,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:25:40,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:25:40,920 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 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) [2021-03-11 20:25:40,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:41,047 INFO L129 PetriNetUnfolder]: 310/656 cut-off events. [2021-03-11 20:25:41,047 INFO L130 PetriNetUnfolder]: For 3047/4959 co-relation queries the response was YES. [2021-03-11 20:25:41,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2937 conditions, 656 events. 310/656 cut-off events. For 3047/4959 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 4366 event pairs, 1 based on Foata normal form. 357/938 useless extension candidates. Maximal degree in co-relation 2908. Up to 220 conditions per place. [2021-03-11 20:25:41,050 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 2 selfloop transitions, 30 changer transitions 15/62 dead transitions. [2021-03-11 20:25:41,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 62 transitions, 559 flow [2021-03-11 20:25:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 20:25:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 20:25:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1174 transitions. [2021-03-11 20:25:41,052 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7733860342555995 [2021-03-11 20:25:41,052 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1174 transitions. [2021-03-11 20:25:41,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1174 transitions. [2021-03-11 20:25:41,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:41,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1174 transitions. [2021-03-11 20:25:41,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.72727272727273) internal successors, (1174), 11 states have internal predecessors, (1174), 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) [2021-03-11 20:25:41,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 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) [2021-03-11 20:25:41,057 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 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) [2021-03-11 20:25:41,057 INFO L185 Difference]: Start difference. First operand has 69 places, 57 transitions, 425 flow. Second operand 11 states and 1174 transitions. [2021-03-11 20:25:41,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 62 transitions, 559 flow [2021-03-11 20:25:41,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 62 transitions, 541 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:25:41,070 INFO L241 Difference]: Finished difference. Result has 79 places, 47 transitions, 410 flow [2021-03-11 20:25:41,070 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=79, PETRI_TRANSITIONS=47} [2021-03-11 20:25:41,071 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2021-03-11 20:25:41,071 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 47 transitions, 410 flow [2021-03-11 20:25:41,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 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) [2021-03-11 20:25:41,071 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:41,071 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:41,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 20:25:41,071 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:41,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1432139671, now seen corresponding path program 1 times [2021-03-11 20:25:41,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:41,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590711939] [2021-03-11 20:25:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:41,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:41,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:41,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:41,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:41,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:41,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:41,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590711939] [2021-03-11 20:25:41,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:41,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:41,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233866213] [2021-03-11 20:25:41,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:41,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:41,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:41,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:41,102 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2021-03-11 20:25:41,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 47 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2021-03-11 20:25:41,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:41,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2021-03-11 20:25:41,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:41,125 INFO L129 PetriNetUnfolder]: 82/209 cut-off events. [2021-03-11 20:25:41,125 INFO L130 PetriNetUnfolder]: For 883/1011 co-relation queries the response was YES. [2021-03-11 20:25:41,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 209 events. 82/209 cut-off events. For 883/1011 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1076 event pairs, 1 based on Foata normal form. 5/191 useless extension candidates. Maximal degree in co-relation 916. Up to 60 conditions per place. [2021-03-11 20:25:41,126 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2021-03-11 20:25:41,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 46 transitions, 390 flow [2021-03-11 20:25:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2021-03-11 20:25:41,127 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8134057971014492 [2021-03-11 20:25:41,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2021-03-11 20:25:41,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2021-03-11 20:25:41,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:41,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2021-03-11 20:25:41,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2021-03-11 20:25:41,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-03-11 20:25:41,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2021-03-11 20:25:41,129 INFO L185 Difference]: Start difference. First operand has 79 places, 47 transitions, 410 flow. Second operand 4 states and 449 transitions. [2021-03-11 20:25:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 46 transitions, 390 flow [2021-03-11 20:25:41,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 232 flow, removed 23 selfloop flow, removed 26 redundant places. [2021-03-11 20:25:41,133 INFO L241 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2021-03-11 20:25:41,133 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2021-03-11 20:25:41,133 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2021-03-11 20:25:41,133 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2021-03-11 20:25:41,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2021-03-11 20:25:41,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 20:25:41,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:25:41 BasicIcfg [2021-03-11 20:25:41,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:25:41,137 INFO L168 Benchmark]: Toolchain (without parser) took 4763.20 ms. Allocated memory was 348.1 MB in the beginning and 432.0 MB in the end (delta: 83.9 MB). Free memory was 311.1 MB in the beginning and 336.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:41,138 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.6 MB in the beginning and 329.5 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:25:41,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.38 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 309.8 MB in the end (delta: 718.7 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:41,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.51 ms. Allocated memory is still 348.1 MB. Free memory was 309.8 MB in the beginning and 307.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:41,139 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 ms. Allocated memory is still 348.1 MB. Free memory was 307.7 MB in the beginning and 306.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:41,139 INFO L168 Benchmark]: RCFGBuilder took 323.89 ms. Allocated memory is still 348.1 MB. Free memory was 306.6 MB in the beginning and 280.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:41,140 INFO L168 Benchmark]: TraceAbstraction took 3973.45 ms. Allocated memory was 348.1 MB in the beginning and 432.0 MB in the end (delta: 83.9 MB). Free memory was 280.4 MB in the beginning and 336.0 MB in the end (delta: -55.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:41,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.6 MB in the beginning and 329.5 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 422.38 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 309.8 MB in the end (delta: 718.7 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.51 ms. Allocated memory is still 348.1 MB. Free memory was 309.8 MB in the beginning and 307.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.19 ms. Allocated memory is still 348.1 MB. Free memory was 307.7 MB in the beginning and 306.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 323.89 ms. Allocated memory is still 348.1 MB. Free memory was 306.6 MB in the beginning and 280.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3973.45 ms. Allocated memory was 348.1 MB in the beginning and 432.0 MB in the end (delta: 83.9 MB). Free memory was 280.4 MB in the beginning and 336.0 MB in the end (delta: -55.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2062.4ms, 80 PlacesBefore, 33 PlacesAfterwards, 68 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 2149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1271, positive: 1194, positive conditional: 0, positive unconditional: 1194, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 883, positive: 854, positive conditional: 0, positive unconditional: 854, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 883, positive: 837, positive conditional: 0, positive unconditional: 837, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 125, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1271, positive: 340, positive conditional: 0, positive unconditional: 340, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 883, unknown conditional: 0, unknown unconditional: 883] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3904.8ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 937.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2114.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 65 SDslu, 60 SDs, 0 SdLazy, 273 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 172.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=499occurred in iteration=11, InterpolantAutomatonStates: 74, 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: 25.9ms SsaConstructionTime, 161.3ms SatisfiabilityAnalysisTime, 509.6ms InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 958 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...