/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 14:57:24,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 14:57:24,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 14:57:24,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 14:57:24,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 14:57:24,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 14:57:24,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 14:57:24,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 14:57:24,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 14:57:24,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 14:57:24,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 14:57:24,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 14:57:24,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 14:57:24,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 14:57:24,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 14:57:24,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 14:57:24,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 14:57:24,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 14:57:24,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 14:57:24,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 14:57:24,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 14:57:24,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 14:57:24,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 14:57:24,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 14:57:24,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 14:57:24,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 14:57:24,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 14:57:24,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 14:57:24,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 14:57:24,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 14:57:24,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 14:57:24,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 14:57:24,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 14:57:24,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 14:57:24,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 14:57:24,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 14:57:24,105 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-RepeatedSemanticLbe.epf [2021-03-25 14:57:24,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 14:57:24,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 14:57:24,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 14:57:24,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 14:57:24,125 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 14:57:24,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 14:57:24,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 14:57:24,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 14:57:24,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 14:57:24,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 14:57:24,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 14:57:24,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 14:57:24,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 14:57:24,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 14:57:24,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 14:57:24,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 14:57:24,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 14:57:24,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 14:57:24,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 14:57:24,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 14:57:24,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 14:57:24,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 14:57:24,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 14:57:24,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 14:57:24,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 14:57:24,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 14:57:24,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 14:57:24,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 14:57:24,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 14:57:24,129 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 14:57:24,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 14:57:24,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 14:57:24,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 14:57:24,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 14:57:24,496 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 14:57:24,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-03-25 14:57:24,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b418708a/dcc298686b1348a0a95b16561870a2e2/FLAGd8a68a2ef [2021-03-25 14:57:25,099 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 14:57:25,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-03-25 14:57:25,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b418708a/dcc298686b1348a0a95b16561870a2e2/FLAGd8a68a2ef [2021-03-25 14:57:25,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b418708a/dcc298686b1348a0a95b16561870a2e2 [2021-03-25 14:57:25,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 14:57:25,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 14:57:25,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 14:57:25,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 14:57:25,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 14:57:25,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:57:25" (1/1) ... [2021-03-25 14:57:25,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ab5f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:25, skipping insertion in model container [2021-03-25 14:57:25,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 02:57:25" (1/1) ... [2021-03-25 14:57:25,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 14:57:25,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 14:57:25,713 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/safe020_tso.oepc.i[950,963] [2021-03-25 14:57:25,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 14:57:25,914 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 14:57:25,924 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/safe020_tso.oepc.i[950,963] [2021-03-25 14:57:25,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 14:57:26,046 INFO L208 MainTranslator]: Completed translation [2021-03-25 14:57:26,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26 WrapperNode [2021-03-25 14:57:26,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 14:57:26,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 14:57:26,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 14:57:26,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 14:57:26,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 14:57:26,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 14:57:26,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 14:57:26,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 14:57:26,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (1/1) ... [2021-03-25 14:57:26,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 14:57:26,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 14:57:26,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 14:57:26,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 14:57:26,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (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 [2021-03-25 14:57:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 14:57:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 14:57:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 14:57:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 14:57:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 14:57:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 14:57:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 14:57:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 14:57:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 14:57:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 14:57:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 14:57:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 14:57:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 14:57:26,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 14:57:26,223 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 14:57:26,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 14:57:26,614 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 14:57:26,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:57:26 BoogieIcfgContainer [2021-03-25 14:57:26,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 14:57:26,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 14:57:26,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 14:57:26,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 14:57:26,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 02:57:25" (1/3) ... [2021-03-25 14:57:26,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bb89ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:57:26, skipping insertion in model container [2021-03-25 14:57:26,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 02:57:26" (2/3) ... [2021-03-25 14:57:26,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bb89ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 02:57:26, skipping insertion in model container [2021-03-25 14:57:26,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 02:57:26" (3/3) ... [2021-03-25 14:57:26,622 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2021-03-25 14:57:26,627 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 14:57:26,632 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 14:57:26,632 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 14:57:26,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,664 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,671 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,672 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,672 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 14:57:26,682 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 14:57:26,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 14:57:26,714 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 14:57:26,715 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 14:57:26,715 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 14:57:26,715 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 14:57:26,715 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 14:57:26,715 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 14:57:26,715 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 14:57:26,715 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 14:57:26,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 14:57:26,754 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 14:57:26,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:57:26,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 14:57:26,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 14:57:26,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 14:57:26,762 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:26,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 14:57:26,775 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 14:57:26,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 14:57:26,813 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 14:57:26,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:57:26,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 14:57:26,815 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-25 14:57:28,352 INFO L154 LiptonReduction]: Checked pairs total: 958 [2021-03-25 14:57:28,353 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 14:57:28,355 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1594 [2021-03-25 14:57:28,363 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 14:57:28,363 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:57:28,364 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:28,364 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:28,364 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash 456015442, now seen corresponding path program 1 times [2021-03-25 14:57:28,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:28,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140222135] [2021-03-25 14:57:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:28,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:28,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:28,613 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:57:28,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:57:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:28,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140222135] [2021-03-25 14:57:28,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:28,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:57:28,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463597582] [2021-03-25 14:57:28,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:57:28,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:57:28,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:57:28,648 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2021-03-25 14:57:28,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2021-03-25 14:57:28,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:28,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2021-03-25 14:57:28,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:28,701 INFO L129 PetriNetUnfolder]: 8/48 cut-off events. [2021-03-25 14:57:28,701 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:57:28,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 48 events. 8/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 2 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 73. Up to 19 conditions per place. [2021-03-25 14:57:28,703 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 6 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2021-03-25 14:57:28,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 79 flow [2021-03-25 14:57:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 14:57:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 14:57:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-25 14:57:28,721 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8490990990990991 [2021-03-25 14:57:28,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-25 14:57:28,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-25 14:57:28,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:28,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-25 14:57:28,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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) [2021-03-25 14:57:28,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2021-03-25 14:57:28,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2021-03-25 14:57:28,748 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 4 states and 377 transitions. [2021-03-25 14:57:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 79 flow [2021-03-25 14:57:28,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 14:57:28,760 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 73 flow [2021-03-25 14:57:28,762 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-03-25 14:57:28,762 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-25 14:57:28,762 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:28,763 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 22 transitions, 73 flow [2021-03-25 14:57:28,763 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 22 transitions, 73 flow [2021-03-25 14:57:28,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 22 transitions, 73 flow [2021-03-25 14:57:28,777 INFO L129 PetriNetUnfolder]: 6/45 cut-off events. [2021-03-25 14:57:28,778 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 14:57:28,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 45 events. 6/45 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 4 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2021-03-25 14:57:28,779 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 14:57:29,074 INFO L154 LiptonReduction]: Checked pairs total: 119 [2021-03-25 14:57:29,074 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 14:57:29,075 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 313 [2021-03-25 14:57:29,076 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2021-03-25 14:57:29,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2021-03-25 14:57:29,077 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:29,077 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:29,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 14:57:29,077 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:29,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1251576527, now seen corresponding path program 1 times [2021-03-25 14:57:29,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:29,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260537349] [2021-03-25 14:57:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:29,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:29,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:57:29,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:29,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:29,184 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:57:29,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:57:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:29,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260537349] [2021-03-25 14:57:29,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:29,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:57:29,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860188583] [2021-03-25 14:57:29,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:57:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:29,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:57:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:57:29,195 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2021-03-25 14:57:29,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 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) [2021-03-25 14:57:29,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:29,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2021-03-25 14:57:29,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:29,238 INFO L129 PetriNetUnfolder]: 35/109 cut-off events. [2021-03-25 14:57:29,239 INFO L130 PetriNetUnfolder]: For 78/98 co-relation queries the response was YES. [2021-03-25 14:57:29,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 109 events. 35/109 cut-off events. For 78/98 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 446 event pairs, 2 based on Foata normal form. 9/117 useless extension candidates. Maximal degree in co-relation 263. Up to 35 conditions per place. [2021-03-25 14:57:29,240 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 9 selfloop transitions, 15 changer transitions 0/34 dead transitions. [2021-03-25 14:57:29,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 183 flow [2021-03-25 14:57:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:57:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:57:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-25 14:57:29,242 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8017543859649123 [2021-03-25 14:57:29,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-25 14:57:29,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-25 14:57:29,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:29,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-25 14:57:29,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 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) [2021-03-25 14:57:29,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-25 14:57:29,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-25 14:57:29,246 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 5 states and 457 transitions. [2021-03-25 14:57:29,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 183 flow [2021-03-25 14:57:29,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 165 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 14:57:29,248 INFO L241 Difference]: Finished difference. Result has 35 places, 30 transitions, 178 flow [2021-03-25 14:57:29,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2021-03-25 14:57:29,249 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 14:57:29,249 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:29,249 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 30 transitions, 178 flow [2021-03-25 14:57:29,249 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 30 transitions, 178 flow [2021-03-25 14:57:29,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 178 flow [2021-03-25 14:57:29,259 INFO L129 PetriNetUnfolder]: 22/93 cut-off events. [2021-03-25 14:57:29,259 INFO L130 PetriNetUnfolder]: For 81/100 co-relation queries the response was YES. [2021-03-25 14:57:29,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 93 events. 22/93 cut-off events. For 81/100 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 404 event pairs, 4 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 275. Up to 34 conditions per place. [2021-03-25 14:57:29,261 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-25 14:57:29,437 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 14:57:29,681 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 14:57:29,752 INFO L154 LiptonReduction]: Checked pairs total: 196 [2021-03-25 14:57:29,752 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:57:29,752 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 503 [2021-03-25 14:57:29,753 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 176 flow [2021-03-25 14:57:29,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 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) [2021-03-25 14:57:29,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:29,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:29,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 14:57:29,754 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash 792750374, now seen corresponding path program 1 times [2021-03-25 14:57:29,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:29,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274222074] [2021-03-25 14:57:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:29,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:29,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:29,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:29,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:29,795 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:57:29,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:57:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:29,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274222074] [2021-03-25 14:57:29,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:29,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:57:29,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162930902] [2021-03-25 14:57:29,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 14:57:29,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 14:57:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 14:57:29,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-25 14:57:29,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2021-03-25 14:57:29,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:29,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-25 14:57:29,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:29,845 INFO L129 PetriNetUnfolder]: 25/99 cut-off events. [2021-03-25 14:57:29,846 INFO L130 PetriNetUnfolder]: For 198/248 co-relation queries the response was YES. [2021-03-25 14:57:29,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 99 events. 25/99 cut-off events. For 198/248 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 440 event pairs, 2 based on Foata normal form. 12/110 useless extension candidates. Maximal degree in co-relation 355. Up to 32 conditions per place. [2021-03-25 14:57:29,847 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 7 selfloop transitions, 8 changer transitions 12/36 dead transitions. [2021-03-25 14:57:29,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 285 flow [2021-03-25 14:57:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:57:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:57:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 14:57:29,853 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878260869565218 [2021-03-25 14:57:29,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 14:57:29,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 14:57:29,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:29,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 14:57:29,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2021-03-25 14:57:29,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 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) [2021-03-25 14:57:29,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 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) [2021-03-25 14:57:29,857 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 176 flow. Second operand 5 states and 453 transitions. [2021-03-25 14:57:29,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 285 flow [2021-03-25 14:57:29,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 14:57:29,862 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 148 flow [2021-03-25 14:57:29,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2021-03-25 14:57:29,862 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-25 14:57:29,862 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:29,862 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 22 transitions, 148 flow [2021-03-25 14:57:29,863 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 22 transitions, 148 flow [2021-03-25 14:57:29,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 22 transitions, 148 flow [2021-03-25 14:57:29,869 INFO L129 PetriNetUnfolder]: 9/50 cut-off events. [2021-03-25 14:57:29,870 INFO L130 PetriNetUnfolder]: For 97/100 co-relation queries the response was YES. [2021-03-25 14:57:29,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 50 events. 9/50 cut-off events. For 97/100 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 163 event pairs, 4 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 173. Up to 20 conditions per place. [2021-03-25 14:57:29,872 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-25 14:57:29,899 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-25 14:57:29,899 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:57:29,900 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 14:57:29,904 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 152 flow [2021-03-25 14:57:29,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2021-03-25 14:57:29,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:29,904 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:29,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 14:57:29,905 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2224087, now seen corresponding path program 1 times [2021-03-25 14:57:29,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:29,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943469950] [2021-03-25 14:57:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:29,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:29,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:29,970 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:57:29,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:57:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:29,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943469950] [2021-03-25 14:57:29,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:29,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:57:29,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003745291] [2021-03-25 14:57:29,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:57:29,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:29,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:57:29,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:57:29,980 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2021-03-25 14:57:29,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:29,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:29,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2021-03-25 14:57:29,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:30,003 INFO L129 PetriNetUnfolder]: 7/42 cut-off events. [2021-03-25 14:57:30,004 INFO L130 PetriNetUnfolder]: For 121/135 co-relation queries the response was YES. [2021-03-25 14:57:30,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 42 events. 7/42 cut-off events. For 121/135 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 1 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 173. Up to 16 conditions per place. [2021-03-25 14:57:30,005 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 3 selfloop transitions, 9 changer transitions 0/23 dead transitions. [2021-03-25 14:57:30,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 186 flow [2021-03-25 14:57:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 14:57:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 14:57:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-25 14:57:30,007 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8168103448275862 [2021-03-25 14:57:30,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-25 14:57:30,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-25 14:57:30,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:30,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-25 14:57:30,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-25 14:57:30,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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) [2021-03-25 14:57:30,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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) [2021-03-25 14:57:30,011 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 152 flow. Second operand 4 states and 379 transitions. [2021-03-25 14:57:30,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 186 flow [2021-03-25 14:57:30,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 146 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-25 14:57:30,015 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 147 flow [2021-03-25 14:57:30,016 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-03-25 14:57:30,016 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2021-03-25 14:57:30,016 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:30,016 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 147 flow [2021-03-25 14:57:30,019 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 147 flow [2021-03-25 14:57:30,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 147 flow [2021-03-25 14:57:30,024 INFO L129 PetriNetUnfolder]: 7/43 cut-off events. [2021-03-25 14:57:30,024 INFO L130 PetriNetUnfolder]: For 59/65 co-relation queries the response was YES. [2021-03-25 14:57:30,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 43 events. 7/43 cut-off events. For 59/65 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 1 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 140. Up to 16 conditions per place. [2021-03-25 14:57:30,025 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-25 14:57:30,050 INFO L154 LiptonReduction]: Checked pairs total: 139 [2021-03-25 14:57:30,050 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:57:30,050 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 14:57:30,052 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 148 flow [2021-03-25 14:57:30,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,053 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:30,053 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:30,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 14:57:30,053 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:30,054 INFO L82 PathProgramCache]: Analyzing trace with hash 68312801, now seen corresponding path program 1 times [2021-03-25 14:57:30,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:30,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292332390] [2021-03-25 14:57:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:30,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:57:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:30,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292332390] [2021-03-25 14:57:30,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:30,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 14:57:30,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340025284] [2021-03-25 14:57:30,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 14:57:30,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:30,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 14:57:30,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 14:57:30,124 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 14:57:30,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-25 14:57:30,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:30,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 14:57:30,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:30,147 INFO L129 PetriNetUnfolder]: 45/119 cut-off events. [2021-03-25 14:57:30,147 INFO L130 PetriNetUnfolder]: For 157/171 co-relation queries the response was YES. [2021-03-25 14:57:30,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 119 events. 45/119 cut-off events. For 157/171 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 504 event pairs, 16 based on Foata normal form. 3/114 useless extension candidates. Maximal degree in co-relation 342. Up to 77 conditions per place. [2021-03-25 14:57:30,149 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-25 14:57:30,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 170 flow [2021-03-25 14:57:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 14:57:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 14:57:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2021-03-25 14:57:30,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-25 14:57:30,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2021-03-25 14:57:30,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2021-03-25 14:57:30,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:30,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2021-03-25 14:57:30,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2021-03-25 14:57:30,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,153 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 148 flow. Second operand 3 states and 291 transitions. [2021-03-25 14:57:30,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 170 flow [2021-03-25 14:57:30,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 161 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 14:57:30,156 INFO L241 Difference]: Finished difference. Result has 39 places, 26 transitions, 165 flow [2021-03-25 14:57:30,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2021-03-25 14:57:30,156 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-25 14:57:30,156 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:30,157 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 26 transitions, 165 flow [2021-03-25 14:57:30,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 26 transitions, 165 flow [2021-03-25 14:57:30,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 26 transitions, 165 flow [2021-03-25 14:57:30,167 INFO L129 PetriNetUnfolder]: 45/122 cut-off events. [2021-03-25 14:57:30,167 INFO L130 PetriNetUnfolder]: For 177/195 co-relation queries the response was YES. [2021-03-25 14:57:30,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 122 events. 45/122 cut-off events. For 177/195 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 549 event pairs, 16 based on Foata normal form. 2/118 useless extension candidates. Maximal degree in co-relation 355. Up to 77 conditions per place. [2021-03-25 14:57:30,169 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-25 14:57:30,170 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 14:57:30,171 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:57:30,171 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 14:57:30,174 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 165 flow [2021-03-25 14:57:30,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-25 14:57:30,174 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:30,174 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:30,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 14:57:30,174 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2140771766, now seen corresponding path program 1 times [2021-03-25 14:57:30,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:30,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881846599] [2021-03-25 14:57:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:30,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:57:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:30,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881846599] [2021-03-25 14:57:30,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:30,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:57:30,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673671471] [2021-03-25 14:57:30,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:57:30,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:30,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:57:30,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:57:30,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 14:57:30,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-25 14:57:30,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:30,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 14:57:30,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:30,259 INFO L129 PetriNetUnfolder]: 23/76 cut-off events. [2021-03-25 14:57:30,259 INFO L130 PetriNetUnfolder]: For 115/151 co-relation queries the response was YES. [2021-03-25 14:57:30,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 76 events. 23/76 cut-off events. For 115/151 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 253 event pairs, 2 based on Foata normal form. 23/96 useless extension candidates. Maximal degree in co-relation 260. Up to 48 conditions per place. [2021-03-25 14:57:30,260 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-25 14:57:30,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 199 flow [2021-03-25 14:57:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 14:57:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 14:57:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-03-25 14:57:30,261 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-25 14:57:30,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-03-25 14:57:30,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-03-25 14:57:30,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:30,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-03-25 14:57:30,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-25 14:57:30,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,264 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 165 flow. Second operand 4 states and 388 transitions. [2021-03-25 14:57:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 199 flow [2021-03-25 14:57:30,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 179 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 14:57:30,266 INFO L241 Difference]: Finished difference. Result has 40 places, 29 transitions, 185 flow [2021-03-25 14:57:30,266 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2021-03-25 14:57:30,266 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-25 14:57:30,266 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:30,266 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 29 transitions, 185 flow [2021-03-25 14:57:30,267 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 29 transitions, 185 flow [2021-03-25 14:57:30,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 29 transitions, 185 flow [2021-03-25 14:57:30,273 INFO L129 PetriNetUnfolder]: 24/79 cut-off events. [2021-03-25 14:57:30,273 INFO L130 PetriNetUnfolder]: For 84/115 co-relation queries the response was YES. [2021-03-25 14:57:30,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 79 events. 24/79 cut-off events. For 84/115 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 278 event pairs, 3 based on Foata normal form. 6/82 useless extension candidates. Maximal degree in co-relation 258. Up to 49 conditions per place. [2021-03-25 14:57:30,274 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-25 14:57:30,276 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 14:57:30,276 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:57:30,276 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 14:57:30,277 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 185 flow [2021-03-25 14:57:30,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-03-25 14:57:30,277 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:30,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:30,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 14:57:30,277 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1954369822, now seen corresponding path program 1 times [2021-03-25 14:57:30,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:30,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749175129] [2021-03-25 14:57:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:30,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:57:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:30,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749175129] [2021-03-25 14:57:30,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:30,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 14:57:30,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90481518] [2021-03-25 14:57:30,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 14:57:30,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 14:57:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 14:57:30,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 14:57:30,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2021-03-25 14:57:30,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:30,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 14:57:30,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:30,369 INFO L129 PetriNetUnfolder]: 16/55 cut-off events. [2021-03-25 14:57:30,369 INFO L130 PetriNetUnfolder]: For 111/175 co-relation queries the response was YES. [2021-03-25 14:57:30,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 55 events. 16/55 cut-off events. For 111/175 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 152 event pairs, 0 based on Foata normal form. 36/88 useless extension candidates. Maximal degree in co-relation 213. Up to 33 conditions per place. [2021-03-25 14:57:30,370 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 1 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2021-03-25 14:57:30,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 29 transitions, 207 flow [2021-03-25 14:57:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:57:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:57:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2021-03-25 14:57:30,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8239316239316239 [2021-03-25 14:57:30,373 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2021-03-25 14:57:30,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2021-03-25 14:57:30,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:30,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2021-03-25 14:57:30,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 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) [2021-03-25 14:57:30,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,376 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 14:57:30,376 INFO L185 Difference]: Start difference. First operand has 40 places, 29 transitions, 185 flow. Second operand 5 states and 482 transitions. [2021-03-25 14:57:30,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 29 transitions, 207 flow [2021-03-25 14:57:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 180 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-25 14:57:30,378 INFO L241 Difference]: Finished difference. Result has 41 places, 29 transitions, 186 flow [2021-03-25 14:57:30,378 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2021-03-25 14:57:30,378 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-03-25 14:57:30,378 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:30,378 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 29 transitions, 186 flow [2021-03-25 14:57:30,379 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 29 transitions, 186 flow [2021-03-25 14:57:30,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 29 transitions, 186 flow [2021-03-25 14:57:30,387 INFO L129 PetriNetUnfolder]: 16/56 cut-off events. [2021-03-25 14:57:30,387 INFO L130 PetriNetUnfolder]: For 88/98 co-relation queries the response was YES. [2021-03-25 14:57:30,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 56 events. 16/56 cut-off events. For 88/98 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 181 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 178. Up to 25 conditions per place. [2021-03-25 14:57:30,388 INFO L142 LiptonReduction]: Number of co-enabled transitions 100 [2021-03-25 14:57:30,464 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 14:57:30,464 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 14:57:30,464 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-03-25 14:57:30,465 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 184 flow [2021-03-25 14:57:30,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2021-03-25 14:57:30,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 14:57:30,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 14:57:30,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 14:57:30,467 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 14:57:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 14:57:30,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1708901648, now seen corresponding path program 1 times [2021-03-25 14:57:30,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 14:57:30,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55771244] [2021-03-25 14:57:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 14:57:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 14:57:30,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 14:57:30,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 14:57:30,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 14:57:30,518 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 14:57:30,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 14:57:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 14:57:30,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55771244] [2021-03-25 14:57:30,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 14:57:30,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 14:57:30,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669961936] [2021-03-25 14:57:30,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 14:57:30,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 14:57:30,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 14:57:30,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 14:57:30,529 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-25 14:57:30,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2021-03-25 14:57:30,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 14:57:30,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-25 14:57:30,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 14:57:30,559 INFO L129 PetriNetUnfolder]: 18/59 cut-off events. [2021-03-25 14:57:30,560 INFO L130 PetriNetUnfolder]: For 167/210 co-relation queries the response was YES. [2021-03-25 14:57:30,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 59 events. 18/59 cut-off events. For 167/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 190 event pairs, 0 based on Foata normal form. 23/79 useless extension candidates. Maximal degree in co-relation 207. Up to 25 conditions per place. [2021-03-25 14:57:30,560 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-03-25 14:57:30,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 225 flow [2021-03-25 14:57:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 14:57:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 14:57:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2021-03-25 14:57:30,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.764406779661017 [2021-03-25 14:57:30,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2021-03-25 14:57:30,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2021-03-25 14:57:30,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 14:57:30,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2021-03-25 14:57:30,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 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) [2021-03-25 14:57:30,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2021-03-25 14:57:30,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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) [2021-03-25 14:57:30,566 INFO L185 Difference]: Start difference. First operand has 40 places, 28 transitions, 184 flow. Second operand 5 states and 451 transitions. [2021-03-25 14:57:30,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 225 flow [2021-03-25 14:57:30,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 183 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-25 14:57:30,568 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-25 14:57:30,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-25 14:57:30,568 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2021-03-25 14:57:30,568 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 14:57:30,568 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 14:57:30,569 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 14:57:30,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 14:57:30,569 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 14:57:30,569 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 14:57:30,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 14:57:30,569 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 14:57:30,570 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 14:57:30,570 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 14:57:30,570 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 14:57:30,571 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 14:57:30,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2021-03-25 14:57:30,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 14:57:30,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 02:57:30 BasicIcfg [2021-03-25 14:57:30,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 14:57:30,575 INFO L168 Benchmark]: Toolchain (without parser) took 5031.14 ms. Allocated memory was 255.9 MB in the beginning and 461.4 MB in the end (delta: 205.5 MB). Free memory was 236.8 MB in the beginning and 249.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 191.9 MB. Max. memory is 16.0 GB. [2021-03-25 14:57:30,575 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 14:57:30,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.12 ms. Allocated memory was 255.9 MB in the beginning and 383.8 MB in the end (delta: 127.9 MB). Free memory was 236.8 MB in the beginning and 345.9 MB in the end (delta: -109.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 14:57:30,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.66 ms. Allocated memory is still 383.8 MB. Free memory was 345.9 MB in the beginning and 344.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:57:30,576 INFO L168 Benchmark]: Boogie Preprocessor took 31.67 ms. Allocated memory is still 383.8 MB. Free memory was 344.5 MB in the beginning and 343.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 14:57:30,576 INFO L168 Benchmark]: RCFGBuilder took 474.01 ms. Allocated memory is still 383.8 MB. Free memory was 343.1 MB in the beginning and 321.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 14:57:30,577 INFO L168 Benchmark]: TraceAbstraction took 3957.30 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 320.8 MB in the beginning and 249.9 MB in the end (delta: 70.9 MB). Peak memory consumption was 151.5 MB. Max. memory is 16.0 GB. [2021-03-25 14:57:30,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 502.12 ms. Allocated memory was 255.9 MB in the beginning and 383.8 MB in the end (delta: 127.9 MB). Free memory was 236.8 MB in the beginning and 345.9 MB in the end (delta: -109.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 59.66 ms. Allocated memory is still 383.8 MB. Free memory was 345.9 MB in the beginning and 344.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.67 ms. Allocated memory is still 383.8 MB. Free memory was 344.5 MB in the beginning and 343.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 474.01 ms. Allocated memory is still 383.8 MB. Free memory was 343.1 MB in the beginning and 321.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3957.30 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 320.8 MB in the beginning and 249.9 MB in the end (delta: 70.9 MB). Peak memory consumption was 151.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1578.0ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 958 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 677, positive: 643, positive conditional: 0, positive unconditional: 643, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 527, positive: 506, positive conditional: 0, positive unconditional: 506, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 527, positive: 506, positive conditional: 0, positive unconditional: 506, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 527, positive: 501, positive conditional: 0, positive unconditional: 501, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 115, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 677, positive: 137, positive conditional: 0, positive unconditional: 137, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 527, unknown conditional: 0, unknown unconditional: 527] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 311.2ms, 32 PlacesBefore, 29 PlacesAfterwards, 22 TransitionsBefore, 19 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 12, unknown conditional: 0, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 502.8ms, 35 PlacesBefore, 34 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 196 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 178, positive: 164, positive conditional: 0, positive unconditional: 164, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 178, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.2ms, 40 PlacesBefore, 40 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 74, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 74, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.2ms, 37 PlacesBefore, 37 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 139 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 110, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 110, positive: 94, positive conditional: 0, positive unconditional: 94, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8ms, 39 PlacesBefore, 39 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.4ms, 40 PlacesBefore, 40 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 85.3ms, 41 PlacesBefore, 40 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 37 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3860.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 420.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1644.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 26 SDslu, 22 SDs, 0 SdLazy, 93 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=7, InterpolantAutomatonStates: 35, 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: 21.0ms SsaConstructionTime, 167.9ms SatisfiabilityAnalysisTime, 421.4ms InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...