/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:48:09,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:48:09,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:48:09,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:48:09,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:48:09,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:48:09,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:48:09,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:48:09,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:48:09,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:48:09,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:48:09,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:48:09,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:48:09,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:48:09,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:48:09,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:48:09,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:48:09,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:48:09,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:48:09,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:48:09,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:48:09,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:48:09,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:48:09,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:48:09,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:48:09,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:48:09,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:48:09,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:48:09,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:48:09,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:48:09,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:48:09,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:48:09,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:48:09,265 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:48:09,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:48:09,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:48:09,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:48:09,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:48:09,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:48:09,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:48:09,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:48:09,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:48:09,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:48:09,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:48:09,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:48:09,573 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:48:09,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-03-26 00:48:09,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1f2bade/cfc4b429ab454332a436c64ffcb1ba9e/FLAG72e77320c [2021-03-26 00:48:10,061 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:48:10,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-03-26 00:48:10,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1f2bade/cfc4b429ab454332a436c64ffcb1ba9e/FLAG72e77320c [2021-03-26 00:48:10,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee1f2bade/cfc4b429ab454332a436c64ffcb1ba9e [2021-03-26 00:48:10,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:48:10,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:48:10,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:48:10,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:48:10,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:48:10,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:10,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310823aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10, skipping insertion in model container [2021-03-26 00:48:10,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:10,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:48:10,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:48:10,613 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/safe029_pso.oepc.i[950,963] [2021-03-26 00:48:10,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:48:10,858 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:48:10,869 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/safe029_pso.oepc.i[950,963] [2021-03-26 00:48:10,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:48:10,984 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:48:10,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10 WrapperNode [2021-03-26 00:48:10,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:48:10,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:48:10,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:48:10,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:48:10,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:48:11,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:48:11,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:48:11,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:48:11,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (1/1) ... [2021-03-26 00:48:11,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:48:11,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:48:11,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:48:11,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:48:11,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (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 [2021-03-26 00:48:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:48:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:48:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:48:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:48:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:48:11,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:48:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:48:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:48:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:48:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:48:11,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:48:11,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:48:11,196 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:48:12,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:48:12,767 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-26 00:48:12,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:48:12 BoogieIcfgContainer [2021-03-26 00:48:12,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:48:12,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:48:12,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:48:12,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:48:12,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:48:10" (1/3) ... [2021-03-26 00:48:12,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4d2946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:48:12, skipping insertion in model container [2021-03-26 00:48:12,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:48:10" (2/3) ... [2021-03-26 00:48:12,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4d2946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:48:12, skipping insertion in model container [2021-03-26 00:48:12,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:48:12" (3/3) ... [2021-03-26 00:48:12,776 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_pso.oepc.i [2021-03-26 00:48:12,781 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:48:12,785 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-26 00:48:12,786 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:48:12,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,819 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,834 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,834 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:48:12,837 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:48:12,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 00:48:12,884 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:48:12,885 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:48:12,885 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:48:12,885 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:48:12,885 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:48:12,885 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:48:12,885 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:48:12,885 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:48:12,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 168 flow [2021-03-26 00:48:12,938 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-26 00:48:12,938 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:12,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 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. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-26 00:48:12,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 168 flow [2021-03-26 00:48:12,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 160 flow [2021-03-26 00:48:12,953 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:12,965 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-26 00:48:12,970 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-26 00:48:12,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 160 flow [2021-03-26 00:48:12,996 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-26 00:48:12,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:12,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-26 00:48:13,005 INFO L142 LiptonReduction]: Number of co-enabled transitions 926 [2021-03-26 00:48:14,448 WARN L205 SmtUtils]: Spent 792.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2021-03-26 00:48:14,765 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2021-03-26 00:48:16,132 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 308 DAG size of output: 264 [2021-03-26 00:48:16,735 WARN L205 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2021-03-26 00:48:17,314 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-26 00:48:17,691 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-26 00:48:17,794 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-26 00:48:19,056 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-26 00:48:19,335 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-26 00:48:19,936 WARN L205 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-26 00:48:20,541 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-26 00:48:20,884 INFO L154 LiptonReduction]: Checked pairs total: 1628 [2021-03-26 00:48:20,884 INFO L156 LiptonReduction]: Total number of compositions: 55 [2021-03-26 00:48:20,886 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7934 [2021-03-26 00:48:20,893 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 00:48:20,893 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:20,893 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:20,893 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:20,894 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash 730483881, now seen corresponding path program 1 times [2021-03-26 00:48:20,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:20,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794165465] [2021-03-26 00:48:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:21,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:21,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:48:21,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:21,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:21,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794165465] [2021-03-26 00:48:21,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:21,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:48:21,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649558201] [2021-03-26 00:48:21,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:48:21,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:21,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:48:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:48:21,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-03-26 00:48:21,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2021-03-26 00:48:21,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:21,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-03-26 00:48:21,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:21,180 INFO L129 PetriNetUnfolder]: 23/89 cut-off events. [2021-03-26 00:48:21,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:21,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 89 events. 23/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 340 event pairs, 16 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 130. Up to 37 conditions per place. [2021-03-26 00:48:21,184 INFO L132 encePairwiseOnDemand]: 130/134 looper letters, 7 selfloop transitions, 2 changer transitions 5/30 dead transitions. [2021-03-26 00:48:21,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 88 flow [2021-03-26 00:48:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:48:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:48:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-26 00:48:21,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706467661691543 [2021-03-26 00:48:21,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-26 00:48:21,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-26 00:48:21,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:21,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-26 00:48:21,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2021-03-26 00:48:21,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2021-03-26 00:48:21,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2021-03-26 00:48:21,231 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 64 flow. Second operand 3 states and 350 transitions. [2021-03-26 00:48:21,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 88 flow [2021-03-26 00:48:21,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:48:21,235 INFO L241 Difference]: Finished difference. Result has 33 places, 22 transitions, 52 flow [2021-03-26 00:48:21,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2021-03-26 00:48:21,237 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2021-03-26 00:48:21,237 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:21,237 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 22 transitions, 52 flow [2021-03-26 00:48:21,239 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 22 transitions, 52 flow [2021-03-26 00:48:21,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 52 flow [2021-03-26 00:48:21,248 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 00:48:21,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:21,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 00:48:21,249 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-26 00:48:21,725 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-26 00:48:22,058 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-26 00:48:22,721 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-26 00:48:23,384 WARN L205 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-26 00:48:23,902 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-26 00:48:24,393 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-03-26 00:48:24,509 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-03-26 00:48:24,749 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-03-26 00:48:24,862 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-03-26 00:48:24,865 INFO L154 LiptonReduction]: Checked pairs total: 588 [2021-03-26 00:48:24,865 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 00:48:24,865 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3628 [2021-03-26 00:48:24,866 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 40 flow [2021-03-26 00:48:24,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2021-03-26 00:48:24,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:24,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:24,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:48:24,867 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1358233529, now seen corresponding path program 1 times [2021-03-26 00:48:24,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:24,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144601966] [2021-03-26 00:48:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:25,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:48:25,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:25,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:48:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:25,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144601966] [2021-03-26 00:48:25,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:25,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:48:25,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723919008] [2021-03-26 00:48:25,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:48:25,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:25,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:48:25,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:48:25,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 140 [2021-03-26 00:48:25,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2021-03-26 00:48:25,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:25,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 140 [2021-03-26 00:48:25,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:25,062 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-26 00:48:25,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:25,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 28 events. 3/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 1 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 38. Up to 10 conditions per place. [2021-03-26 00:48:25,062 INFO L132 encePairwiseOnDemand]: 136/140 looper letters, 3 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-03-26 00:48:25,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 56 flow [2021-03-26 00:48:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:48:25,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:48:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2021-03-26 00:48:25,067 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2021-03-26 00:48:25,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2021-03-26 00:48:25,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2021-03-26 00:48:25,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:25,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2021-03-26 00:48:25,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2021-03-26 00:48:25,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-26 00:48:25,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-26 00:48:25,070 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 40 flow. Second operand 3 states and 352 transitions. [2021-03-26 00:48:25,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 56 flow [2021-03-26 00:48:25,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:48:25,071 INFO L241 Difference]: Finished difference. Result has 24 places, 18 transitions, 55 flow [2021-03-26 00:48:25,072 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2021-03-26 00:48:25,072 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2021-03-26 00:48:25,072 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:25,072 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-26 00:48:25,073 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-26 00:48:25,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 18 transitions, 55 flow [2021-03-26 00:48:25,077 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2021-03-26 00:48:25,077 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:48:25,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 26 events. 3/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 37. Up to 10 conditions per place. [2021-03-26 00:48:25,077 INFO L142 LiptonReduction]: Number of co-enabled transitions 118 [2021-03-26 00:48:25,106 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-26 00:48:25,106 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:48:25,107 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-26 00:48:25,109 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 55 flow [2021-03-26 00:48:25,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2021-03-26 00:48:25,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:25,110 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:25,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:48:25,110 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:25,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:25,111 INFO L82 PathProgramCache]: Analyzing trace with hash 211342155, now seen corresponding path program 1 times [2021-03-26 00:48:25,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:25,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870996199] [2021-03-26 00:48:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:25,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 00:48:25,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 00:48:25,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 00:48:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:25,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870996199] [2021-03-26 00:48:25,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:25,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:48:25,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657982227] [2021-03-26 00:48:25,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:48:25,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:48:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:48:25,311 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 140 [2021-03-26 00:48:25,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2021-03-26 00:48:25,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:25,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 140 [2021-03-26 00:48:25,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:25,398 INFO L129 PetriNetUnfolder]: 119/222 cut-off events. [2021-03-26 00:48:25,399 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 00:48:25,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 222 events. 119/222 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 864 event pairs, 93 based on Foata normal form. 2/194 useless extension candidates. Maximal degree in co-relation 463. Up to 200 conditions per place. [2021-03-26 00:48:25,401 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 16 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2021-03-26 00:48:25,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 117 flow [2021-03-26 00:48:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:48:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:48:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2021-03-26 00:48:25,403 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2021-03-26 00:48:25,403 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2021-03-26 00:48:25,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2021-03-26 00:48:25,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:25,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2021-03-26 00:48:25,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-03-26 00:48:25,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2021-03-26 00:48:25,407 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2021-03-26 00:48:25,407 INFO L185 Difference]: Start difference. First operand has 24 places, 18 transitions, 55 flow. Second operand 4 states and 395 transitions. [2021-03-26 00:48:25,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 117 flow [2021-03-26 00:48:25,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:48:25,408 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2021-03-26 00:48:25,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-03-26 00:48:25,408 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2021-03-26 00:48:25,408 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:25,409 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 22 transitions, 86 flow [2021-03-26 00:48:25,409 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 22 transitions, 86 flow [2021-03-26 00:48:25,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 22 transitions, 86 flow [2021-03-26 00:48:25,415 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2021-03-26 00:48:25,416 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-26 00:48:25,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 41 events. 10/41 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 119 event pairs, 4 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 87. Up to 16 conditions per place. [2021-03-26 00:48:25,416 INFO L142 LiptonReduction]: Number of co-enabled transitions 134 [2021-03-26 00:48:25,466 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-26 00:48:25,466 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:48:25,466 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 58 [2021-03-26 00:48:25,467 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-03-26 00:48:25,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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) [2021-03-26 00:48:25,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:25,468 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:25,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:48:25,468 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:25,468 INFO L82 PathProgramCache]: Analyzing trace with hash 990684202, now seen corresponding path program 1 times [2021-03-26 00:48:25,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:25,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851930891] [2021-03-26 00:48:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:25,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:48:25,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:25,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851930891] [2021-03-26 00:48:25,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:25,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:48:25,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926047718] [2021-03-26 00:48:25,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:48:25,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:25,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:48:25,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:48:25,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 140 [2021-03-26 00:48:25,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-26 00:48:25,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:25,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 140 [2021-03-26 00:48:25,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:25,560 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-26 00:48:25,561 INFO L130 PetriNetUnfolder]: For 63/71 co-relation queries the response was YES. [2021-03-26 00:48:25,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 43 events. 6/43 cut-off events. For 63/71 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 151 event pairs, 4 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 98. Up to 14 conditions per place. [2021-03-26 00:48:25,561 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 3 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-26 00:48:25,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 98 flow [2021-03-26 00:48:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:48:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:48:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2021-03-26 00:48:25,568 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2021-03-26 00:48:25,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2021-03-26 00:48:25,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2021-03-26 00:48:25,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2021-03-26 00:48:25,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2021-03-26 00:48:25,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-26 00:48:25,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-26 00:48:25,571 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 363 transitions. [2021-03-26 00:48:25,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 98 flow [2021-03-26 00:48:25,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 00:48:25,574 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 97 flow [2021-03-26 00:48:25,574 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2021-03-26 00:48:25,574 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2021-03-26 00:48:25,574 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:25,574 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 22 transitions, 97 flow [2021-03-26 00:48:25,575 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 22 transitions, 97 flow [2021-03-26 00:48:25,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 22 transitions, 97 flow [2021-03-26 00:48:25,609 INFO L129 PetriNetUnfolder]: 5/47 cut-off events. [2021-03-26 00:48:25,609 INFO L130 PetriNetUnfolder]: For 45/47 co-relation queries the response was YES. [2021-03-26 00:48:25,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 47 events. 5/47 cut-off events. For 45/47 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 166 event pairs, 3 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 102. Up to 14 conditions per place. [2021-03-26 00:48:25,610 INFO L142 LiptonReduction]: Number of co-enabled transitions 134 [2021-03-26 00:48:25,700 INFO L154 LiptonReduction]: Checked pairs total: 96 [2021-03-26 00:48:25,700 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:48:25,701 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-26 00:48:25,701 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 97 flow [2021-03-26 00:48:25,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-26 00:48:25,702 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:25,702 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:25,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:48:25,702 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:25,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2039409772, now seen corresponding path program 1 times [2021-03-26 00:48:25,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:25,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339156960] [2021-03-26 00:48:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:25,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 00:48:25,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:48:25,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:25,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-26 00:48:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:25,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339156960] [2021-03-26 00:48:25,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:25,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:48:25,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196896672] [2021-03-26 00:48:25,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:48:25,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:25,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:48:25,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:48:25,800 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 140 [2021-03-26 00:48:25,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2021-03-26 00:48:25,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:25,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 140 [2021-03-26 00:48:25,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:25,873 INFO L129 PetriNetUnfolder]: 33/98 cut-off events. [2021-03-26 00:48:25,873 INFO L130 PetriNetUnfolder]: For 90/99 co-relation queries the response was YES. [2021-03-26 00:48:25,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 98 events. 33/98 cut-off events. For 90/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 392 event pairs, 5 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 252. Up to 67 conditions per place. [2021-03-26 00:48:25,875 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 10 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-26 00:48:25,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 137 flow [2021-03-26 00:48:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:48:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:48:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2021-03-26 00:48:25,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7392857142857143 [2021-03-26 00:48:25,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2021-03-26 00:48:25,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2021-03-26 00:48:25,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:25,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2021-03-26 00:48:25,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 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) [2021-03-26 00:48:25,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2021-03-26 00:48:25,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2021-03-26 00:48:25,881 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 97 flow. Second operand 4 states and 414 transitions. [2021-03-26 00:48:25,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 137 flow [2021-03-26 00:48:25,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 132 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-26 00:48:25,883 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 117 flow [2021-03-26 00:48:25,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-26 00:48:25,884 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2021-03-26 00:48:25,884 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:25,884 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 24 transitions, 117 flow [2021-03-26 00:48:25,884 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 24 transitions, 117 flow [2021-03-26 00:48:25,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 117 flow [2021-03-26 00:48:25,893 INFO L129 PetriNetUnfolder]: 7/55 cut-off events. [2021-03-26 00:48:25,893 INFO L130 PetriNetUnfolder]: For 82/87 co-relation queries the response was YES. [2021-03-26 00:48:25,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 55 events. 7/55 cut-off events. For 82/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 217 event pairs, 2 based on Foata normal form. 2/55 useless extension candidates. Maximal degree in co-relation 139. Up to 21 conditions per place. [2021-03-26 00:48:25,894 INFO L142 LiptonReduction]: Number of co-enabled transitions 142 [2021-03-26 00:48:26,070 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-26 00:48:26,478 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2021-03-26 00:48:26,620 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-03-26 00:48:26,649 INFO L154 LiptonReduction]: Checked pairs total: 110 [2021-03-26 00:48:26,649 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:48:26,649 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 765 [2021-03-26 00:48:26,650 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 121 flow [2021-03-26 00:48:26,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2021-03-26 00:48:26,651 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:26,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:26,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:48:26,651 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:26,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1116129388, now seen corresponding path program 1 times [2021-03-26 00:48:26,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:26,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675714399] [2021-03-26 00:48:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:26,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:26,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 00:48:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:26,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 00:48:26,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:26,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-26 00:48:26,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:26,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-26 00:48:26,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:26,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 00:48:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:26,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675714399] [2021-03-26 00:48:26,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:26,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:48:26,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174698548] [2021-03-26 00:48:26,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 00:48:26,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:26,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 00:48:26,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-26 00:48:26,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 141 [2021-03-26 00:48:26,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:48:26,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:26,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 141 [2021-03-26 00:48:26,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:26,987 INFO L129 PetriNetUnfolder]: 190/383 cut-off events. [2021-03-26 00:48:26,987 INFO L130 PetriNetUnfolder]: For 420/434 co-relation queries the response was YES. [2021-03-26 00:48:26,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 383 events. 190/383 cut-off events. For 420/434 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1856 event pairs, 4 based on Foata normal form. 9/352 useless extension candidates. Maximal degree in co-relation 1089. Up to 152 conditions per place. [2021-03-26 00:48:26,990 INFO L132 encePairwiseOnDemand]: 132/141 looper letters, 25 selfloop transitions, 20 changer transitions 7/59 dead transitions. [2021-03-26 00:48:26,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 59 transitions, 346 flow [2021-03-26 00:48:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 00:48:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 00:48:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 778 transitions. [2021-03-26 00:48:26,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6897163120567376 [2021-03-26 00:48:26,993 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 778 transitions. [2021-03-26 00:48:26,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 778 transitions. [2021-03-26 00:48:26,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:26,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 778 transitions. [2021-03-26 00:48:26,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 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) [2021-03-26 00:48:26,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 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) [2021-03-26 00:48:26,998 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 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) [2021-03-26 00:48:26,998 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 121 flow. Second operand 8 states and 778 transitions. [2021-03-26 00:48:26,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 59 transitions, 346 flow [2021-03-26 00:48:27,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 333 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-26 00:48:27,004 INFO L241 Difference]: Finished difference. Result has 43 places, 36 transitions, 233 flow [2021-03-26 00:48:27,004 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=233, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2021-03-26 00:48:27,004 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2021-03-26 00:48:27,005 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:27,005 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 36 transitions, 233 flow [2021-03-26 00:48:27,005 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 36 transitions, 233 flow [2021-03-26 00:48:27,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 233 flow [2021-03-26 00:48:27,026 INFO L129 PetriNetUnfolder]: 58/155 cut-off events. [2021-03-26 00:48:27,026 INFO L130 PetriNetUnfolder]: For 331/348 co-relation queries the response was YES. [2021-03-26 00:48:27,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 155 events. 58/155 cut-off events. For 331/348 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 738 event pairs, 11 based on Foata normal form. 6/153 useless extension candidates. Maximal degree in co-relation 562. Up to 80 conditions per place. [2021-03-26 00:48:27,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 124 [2021-03-26 00:48:27,037 INFO L154 LiptonReduction]: Checked pairs total: 25 [2021-03-26 00:48:27,037 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:48:27,037 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-26 00:48:27,043 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 233 flow [2021-03-26 00:48:27,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:48:27,044 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:27,045 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:27,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:48:27,045 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:27,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2038009595, now seen corresponding path program 1 times [2021-03-26 00:48:27,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:27,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964976445] [2021-03-26 00:48:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:27,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:27,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 00:48:27,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:27,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:48:27,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:27,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 00:48:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:27,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964976445] [2021-03-26 00:48:27,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:27,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:48:27,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477359688] [2021-03-26 00:48:27,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:48:27,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:27,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:48:27,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:48:27,185 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 141 [2021-03-26 00:48:27,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2021-03-26 00:48:27,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:27,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 141 [2021-03-26 00:48:27,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:27,302 INFO L129 PetriNetUnfolder]: 64/173 cut-off events. [2021-03-26 00:48:27,302 INFO L130 PetriNetUnfolder]: For 563/585 co-relation queries the response was YES. [2021-03-26 00:48:27,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 173 events. 64/173 cut-off events. For 563/585 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 842 event pairs, 9 based on Foata normal form. 12/183 useless extension candidates. Maximal degree in co-relation 738. Up to 99 conditions per place. [2021-03-26 00:48:27,305 INFO L132 encePairwiseOnDemand]: 134/141 looper letters, 16 selfloop transitions, 7 changer transitions 8/44 dead transitions. [2021-03-26 00:48:27,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 353 flow [2021-03-26 00:48:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:48:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:48:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2021-03-26 00:48:27,308 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7262411347517731 [2021-03-26 00:48:27,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2021-03-26 00:48:27,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2021-03-26 00:48:27,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:27,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2021-03-26 00:48:27,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 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) [2021-03-26 00:48:27,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2021-03-26 00:48:27,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2021-03-26 00:48:27,311 INFO L185 Difference]: Start difference. First operand has 42 places, 36 transitions, 233 flow. Second operand 5 states and 512 transitions. [2021-03-26 00:48:27,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 353 flow [2021-03-26 00:48:27,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 339 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-26 00:48:27,317 INFO L241 Difference]: Finished difference. Result has 47 places, 34 transitions, 251 flow [2021-03-26 00:48:27,317 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2021-03-26 00:48:27,317 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2021-03-26 00:48:27,317 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:27,317 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 34 transitions, 251 flow [2021-03-26 00:48:27,318 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 34 transitions, 251 flow [2021-03-26 00:48:27,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 34 transitions, 251 flow [2021-03-26 00:48:27,335 INFO L129 PetriNetUnfolder]: 56/143 cut-off events. [2021-03-26 00:48:27,335 INFO L130 PetriNetUnfolder]: For 480/495 co-relation queries the response was YES. [2021-03-26 00:48:27,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 143 events. 56/143 cut-off events. For 480/495 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 655 event pairs, 9 based on Foata normal form. 6/144 useless extension candidates. Maximal degree in co-relation 572. Up to 74 conditions per place. [2021-03-26 00:48:27,337 INFO L142 LiptonReduction]: Number of co-enabled transitions 108 [2021-03-26 00:48:28,024 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 178 [2021-03-26 00:48:28,236 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-03-26 00:48:29,521 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 333 DAG size of output: 254 [2021-03-26 00:48:30,008 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2021-03-26 00:48:30,018 INFO L154 LiptonReduction]: Checked pairs total: 47 [2021-03-26 00:48:30,018 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:48:30,019 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2702 [2021-03-26 00:48:30,019 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 269 flow [2021-03-26 00:48:30,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2021-03-26 00:48:30,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:30,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:30,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:48:30,020 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:30,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:30,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2039300410, now seen corresponding path program 2 times [2021-03-26 00:48:30,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:30,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879784212] [2021-03-26 00:48:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:30,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 00:48:30,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-26 00:48:30,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 00:48:30,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 00:48:30,093 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-26 00:48:30,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-26 00:48:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:30,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879784212] [2021-03-26 00:48:30,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:30,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 00:48:30,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077242040] [2021-03-26 00:48:30,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 00:48:30,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:30,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 00:48:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-26 00:48:30,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 142 [2021-03-26 00:48:30,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 269 flow. Second operand has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 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) [2021-03-26 00:48:30,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:30,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 142 [2021-03-26 00:48:30,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:30,259 INFO L129 PetriNetUnfolder]: 123/256 cut-off events. [2021-03-26 00:48:30,259 INFO L130 PetriNetUnfolder]: For 1166/1193 co-relation queries the response was YES. [2021-03-26 00:48:30,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 256 events. 123/256 cut-off events. For 1166/1193 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1103 event pairs, 9 based on Foata normal form. 23/278 useless extension candidates. Maximal degree in co-relation 1165. Up to 180 conditions per place. [2021-03-26 00:48:30,261 INFO L132 encePairwiseOnDemand]: 136/142 looper letters, 19 selfloop transitions, 15 changer transitions 0/41 dead transitions. [2021-03-26 00:48:30,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 349 flow [2021-03-26 00:48:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:48:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:48:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 641 transitions. [2021-03-26 00:48:30,264 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6448692152917505 [2021-03-26 00:48:30,264 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 641 transitions. [2021-03-26 00:48:30,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 641 transitions. [2021-03-26 00:48:30,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:30,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 641 transitions. [2021-03-26 00:48:30,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 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) [2021-03-26 00:48:30,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-03-26 00:48:30,268 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-03-26 00:48:30,268 INFO L185 Difference]: Start difference. First operand has 47 places, 34 transitions, 269 flow. Second operand 7 states and 641 transitions. [2021-03-26 00:48:30,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 349 flow [2021-03-26 00:48:30,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 324 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-26 00:48:30,273 INFO L241 Difference]: Finished difference. Result has 47 places, 34 transitions, 274 flow [2021-03-26 00:48:30,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2021-03-26 00:48:30,274 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2021-03-26 00:48:30,274 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:30,274 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 34 transitions, 274 flow [2021-03-26 00:48:30,274 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 34 transitions, 274 flow [2021-03-26 00:48:30,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 34 transitions, 274 flow [2021-03-26 00:48:30,289 INFO L129 PetriNetUnfolder]: 46/129 cut-off events. [2021-03-26 00:48:30,289 INFO L130 PetriNetUnfolder]: For 467/480 co-relation queries the response was YES. [2021-03-26 00:48:30,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 129 events. 46/129 cut-off events. For 467/480 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 590 event pairs, 0 based on Foata normal form. 5/128 useless extension candidates. Maximal degree in co-relation 577. Up to 67 conditions per place. [2021-03-26 00:48:30,291 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-26 00:48:30,293 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-26 00:48:30,293 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:48:30,293 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-26 00:48:30,294 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 274 flow [2021-03-26 00:48:30,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 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) [2021-03-26 00:48:30,294 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:30,295 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:30,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:48:30,295 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -977381041, now seen corresponding path program 1 times [2021-03-26 00:48:30,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:30,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825008209] [2021-03-26 00:48:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:30,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:30,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:30,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:48:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:30,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825008209] [2021-03-26 00:48:30,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:30,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:48:30,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852404592] [2021-03-26 00:48:30,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:48:30,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:30,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:48:30,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:48:30,354 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 142 [2021-03-26 00:48:30,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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) [2021-03-26 00:48:30,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:30,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 142 [2021-03-26 00:48:30,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:30,395 INFO L129 PetriNetUnfolder]: 36/126 cut-off events. [2021-03-26 00:48:30,396 INFO L130 PetriNetUnfolder]: For 568/584 co-relation queries the response was YES. [2021-03-26 00:48:30,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 126 events. 36/126 cut-off events. For 568/584 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 593 event pairs, 7 based on Foata normal form. 37/161 useless extension candidates. Maximal degree in co-relation 559. Up to 53 conditions per place. [2021-03-26 00:48:30,397 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 5 selfloop transitions, 7 changer transitions 3/37 dead transitions. [2021-03-26 00:48:30,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 306 flow [2021-03-26 00:48:30,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:48:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:48:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 584 transitions. [2021-03-26 00:48:30,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8225352112676056 [2021-03-26 00:48:30,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 584 transitions. [2021-03-26 00:48:30,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 584 transitions. [2021-03-26 00:48:30,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:30,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 584 transitions. [2021-03-26 00:48:30,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 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) [2021-03-26 00:48:30,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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) [2021-03-26 00:48:30,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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) [2021-03-26 00:48:30,403 INFO L185 Difference]: Start difference. First operand has 47 places, 34 transitions, 274 flow. Second operand 5 states and 584 transitions. [2021-03-26 00:48:30,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 306 flow [2021-03-26 00:48:30,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 285 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-26 00:48:30,407 INFO L241 Difference]: Finished difference. Result has 50 places, 34 transitions, 271 flow [2021-03-26 00:48:30,407 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2021-03-26 00:48:30,408 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2021-03-26 00:48:30,408 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:30,408 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 34 transitions, 271 flow [2021-03-26 00:48:30,408 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 34 transitions, 271 flow [2021-03-26 00:48:30,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 34 transitions, 271 flow [2021-03-26 00:48:30,424 INFO L129 PetriNetUnfolder]: 29/114 cut-off events. [2021-03-26 00:48:30,424 INFO L130 PetriNetUnfolder]: For 416/427 co-relation queries the response was YES. [2021-03-26 00:48:30,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 114 events. 29/114 cut-off events. For 416/427 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 552 event pairs, 1 based on Foata normal form. 7/119 useless extension candidates. Maximal degree in co-relation 505. Up to 48 conditions per place. [2021-03-26 00:48:30,426 INFO L142 LiptonReduction]: Number of co-enabled transitions 96 [2021-03-26 00:48:30,428 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:48:30,428 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:48:30,428 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 00:48:30,428 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 271 flow [2021-03-26 00:48:30,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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) [2021-03-26 00:48:30,429 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:30,429 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:30,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 00:48:30,429 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1540868800, now seen corresponding path program 1 times [2021-03-26 00:48:30,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:30,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274674190] [2021-03-26 00:48:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:30,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:30,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:30,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:48:30,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:30,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:48:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:30,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274674190] [2021-03-26 00:48:30,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:30,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:48:30,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012407447] [2021-03-26 00:48:30,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:48:30,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:48:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:48:30,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 142 [2021-03-26 00:48:30,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 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) [2021-03-26 00:48:30,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:30,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 142 [2021-03-26 00:48:30,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:30,558 INFO L129 PetriNetUnfolder]: 17/85 cut-off events. [2021-03-26 00:48:30,558 INFO L130 PetriNetUnfolder]: For 436/474 co-relation queries the response was YES. [2021-03-26 00:48:30,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 85 events. 17/85 cut-off events. For 436/474 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 373 event pairs, 0 based on Foata normal form. 52/137 useless extension candidates. Maximal degree in co-relation 387. Up to 31 conditions per place. [2021-03-26 00:48:30,559 INFO L132 encePairwiseOnDemand]: 137/142 looper letters, 2 selfloop transitions, 10 changer transitions 7/35 dead transitions. [2021-03-26 00:48:30,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 35 transitions, 297 flow [2021-03-26 00:48:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:48:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:48:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 813 transitions. [2021-03-26 00:48:30,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.817907444668008 [2021-03-26 00:48:30,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 813 transitions. [2021-03-26 00:48:30,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 813 transitions. [2021-03-26 00:48:30,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:30,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 813 transitions. [2021-03-26 00:48:30,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.14285714285714) internal successors, (813), 7 states have internal predecessors, (813), 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) [2021-03-26 00:48:30,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-03-26 00:48:30,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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) [2021-03-26 00:48:30,567 INFO L185 Difference]: Start difference. First operand has 50 places, 34 transitions, 271 flow. Second operand 7 states and 813 transitions. [2021-03-26 00:48:30,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 35 transitions, 297 flow [2021-03-26 00:48:30,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 35 transitions, 271 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-03-26 00:48:30,570 INFO L241 Difference]: Finished difference. Result has 57 places, 28 transitions, 231 flow [2021-03-26 00:48:30,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=57, PETRI_TRANSITIONS=28} [2021-03-26 00:48:30,571 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2021-03-26 00:48:30,571 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:30,571 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 28 transitions, 231 flow [2021-03-26 00:48:30,571 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 28 transitions, 231 flow [2021-03-26 00:48:30,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 28 transitions, 231 flow [2021-03-26 00:48:30,577 INFO L129 PetriNetUnfolder]: 5/39 cut-off events. [2021-03-26 00:48:30,577 INFO L130 PetriNetUnfolder]: For 165/169 co-relation queries the response was YES. [2021-03-26 00:48:30,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 39 events. 5/39 cut-off events. For 165/169 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 112 event pairs, 0 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 164. Up to 12 conditions per place. [2021-03-26 00:48:30,578 INFO L142 LiptonReduction]: Number of co-enabled transitions 60 [2021-03-26 00:48:31,292 WARN L205 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 178 [2021-03-26 00:48:31,513 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2021-03-26 00:48:32,811 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 333 DAG size of output: 254 [2021-03-26 00:48:33,279 WARN L205 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2021-03-26 00:48:33,505 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-26 00:48:33,914 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2021-03-26 00:48:34,057 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-03-26 00:48:34,405 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-03-26 00:48:34,664 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2021-03-26 00:48:35,210 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2021-03-26 00:48:35,731 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2021-03-26 00:48:35,858 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2021-03-26 00:48:36,124 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 82 [2021-03-26 00:48:36,204 INFO L154 LiptonReduction]: Checked pairs total: 30 [2021-03-26 00:48:36,204 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-26 00:48:36,205 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5634 [2021-03-26 00:48:36,205 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 23 transitions, 224 flow [2021-03-26 00:48:36,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 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) [2021-03-26 00:48:36,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:36,206 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:36,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 00:48:36,206 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash -320323248, now seen corresponding path program 1 times [2021-03-26 00:48:36,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:36,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627021506] [2021-03-26 00:48:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:48:36,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:36,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 00:48:36,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:36,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:48:36,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:36,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 00:48:36,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:36,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:48:36,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:48:36,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-26 00:48:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:48:36,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627021506] [2021-03-26 00:48:36,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:48:36,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 00:48:36,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127448880] [2021-03-26 00:48:36,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 00:48:36,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:48:36,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 00:48:36,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-26 00:48:36,342 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 149 [2021-03-26 00:48:36,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 23 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2021-03-26 00:48:36,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:48:36,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 149 [2021-03-26 00:48:36,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:48:36,437 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-26 00:48:36,437 INFO L130 PetriNetUnfolder]: For 308/325 co-relation queries the response was YES. [2021-03-26 00:48:36,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 29 events. 5/29 cut-off events. For 308/325 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 7/34 useless extension candidates. Maximal degree in co-relation 149. Up to 11 conditions per place. [2021-03-26 00:48:36,437 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 2 selfloop transitions, 6 changer transitions 6/21 dead transitions. [2021-03-26 00:48:36,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 21 transitions, 224 flow [2021-03-26 00:48:36,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:48:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:48:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2021-03-26 00:48:36,440 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6778523489932886 [2021-03-26 00:48:36,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2021-03-26 00:48:36,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2021-03-26 00:48:36,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:48:36,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2021-03-26 00:48:36,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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) [2021-03-26 00:48:36,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2021-03-26 00:48:36,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2021-03-26 00:48:36,444 INFO L185 Difference]: Start difference. First operand has 51 places, 23 transitions, 224 flow. Second operand 6 states and 606 transitions. [2021-03-26 00:48:36,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 21 transitions, 224 flow [2021-03-26 00:48:36,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 21 transitions, 165 flow, removed 14 selfloop flow, removed 15 redundant places. [2021-03-26 00:48:36,447 INFO L241 Difference]: Finished difference. Result has 38 places, 15 transitions, 116 flow [2021-03-26 00:48:36,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=38, PETRI_TRANSITIONS=15} [2021-03-26 00:48:36,447 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2021-03-26 00:48:36,447 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:48:36,448 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 15 transitions, 116 flow [2021-03-26 00:48:36,448 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 15 transitions, 116 flow [2021-03-26 00:48:36,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 15 transitions, 116 flow [2021-03-26 00:48:36,452 INFO L129 PetriNetUnfolder]: 2/16 cut-off events. [2021-03-26 00:48:36,452 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-03-26 00:48:36,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 16 events. 2/16 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 62. Up to 7 conditions per place. [2021-03-26 00:48:36,452 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-26 00:48:36,721 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-26 00:48:37,175 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 89 [2021-03-26 00:48:37,304 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-26 00:48:37,307 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:48:37,307 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:48:37,307 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 860 [2021-03-26 00:48:37,307 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 15 transitions, 121 flow [2021-03-26 00:48:37,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2021-03-26 00:48:37,308 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:48:37,308 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:48:37,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 00:48:37,308 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:48:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:48:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash -729497128, now seen corresponding path program 1 times [2021-03-26 00:48:37,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:48:37,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781202685] [2021-03-26 00:48:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:48:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 00:48:37,332 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 00:48:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 00:48:37,355 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 00:48:37,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 00:48:37,378 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 00:48:37,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 00:48:37,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:48:37 BasicIcfg [2021-03-26 00:48:37,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:48:37,427 INFO L168 Benchmark]: Toolchain (without parser) took 27018.19 ms. Allocated memory was 343.9 MB in the beginning and 796.9 MB in the end (delta: 453.0 MB). Free memory was 307.0 MB in the beginning and 569.8 MB in the end (delta: -262.8 MB). Peak memory consumption was 193.4 MB. Max. memory is 16.0 GB. [2021-03-26 00:48:37,428 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 343.9 MB. Free memory is still 325.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:48:37,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.47 ms. Allocated memory is still 343.9 MB. Free memory was 306.9 MB in the beginning and 303.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:48:37,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.04 ms. Allocated memory is still 343.9 MB. Free memory was 303.9 MB in the beginning and 300.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-26 00:48:37,428 INFO L168 Benchmark]: Boogie Preprocessor took 44.40 ms. Allocated memory is still 343.9 MB. Free memory was 300.8 MB in the beginning and 299.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:48:37,428 INFO L168 Benchmark]: RCFGBuilder took 1660.88 ms. Allocated memory is still 343.9 MB. Free memory was 298.7 MB in the beginning and 281.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 163.6 MB. Max. memory is 16.0 GB. [2021-03-26 00:48:37,430 INFO L168 Benchmark]: TraceAbstraction took 24655.14 ms. Allocated memory was 343.9 MB in the beginning and 796.9 MB in the end (delta: 453.0 MB). Free memory was 280.8 MB in the beginning and 569.8 MB in the end (delta: -289.0 MB). Peak memory consumption was 165.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:48:37,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 343.9 MB. Free memory is still 325.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 576.47 ms. Allocated memory is still 343.9 MB. Free memory was 306.9 MB in the beginning and 303.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 76.04 ms. Allocated memory is still 343.9 MB. Free memory was 303.9 MB in the beginning and 300.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 44.40 ms. Allocated memory is still 343.9 MB. Free memory was 300.8 MB in the beginning and 299.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 1660.88 ms. Allocated memory is still 343.9 MB. Free memory was 298.7 MB in the beginning and 281.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 163.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 24655.14 ms. Allocated memory was 343.9 MB in the beginning and 796.9 MB in the end (delta: 453.0 MB). Free memory was 280.8 MB in the beginning and 569.8 MB in the end (delta: -289.0 MB). Peak memory consumption was 165.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7914.6ms, 82 PlacesBefore, 35 PlacesAfterwards, 77 TransitionsBefore, 29 TransitionsAfterwards, 926 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 855, positive: 790, positive conditional: 790, positive unconditional: 0, negative: 65, negative conditional: 65, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 669, positive: 636, positive conditional: 0, positive unconditional: 636, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 669, positive: 636, positive conditional: 0, positive unconditional: 636, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 669, positive: 634, positive conditional: 0, positive unconditional: 634, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 727, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 721, negative conditional: 0, negative unconditional: 721, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 855, positive: 154, positive conditional: 154, positive unconditional: 0, negative: 32, negative conditional: 32, negative unconditional: 0, unknown: 669, unknown conditional: 669, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 28, Positive conditional cache size: 28, Positive unconditional cache size: 0, Negative cache size: 19, Negative conditional cache size: 19, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3626.4ms, 33 PlacesBefore, 23 PlacesAfterwards, 22 TransitionsBefore, 16 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 4 FixpointIterations, 5 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 183, positive: 118, positive conditional: 118, positive unconditional: 0, negative: 65, negative conditional: 65, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 53, positive: 38, positive conditional: 4, positive unconditional: 34, negative: 15, negative conditional: 2, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 53, positive: 38, positive conditional: 4, positive unconditional: 34, negative: 15, negative conditional: 2, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 53, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 15, negative conditional: 2, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 292, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 292, negative conditional: 54, negative unconditional: 238, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 183, positive: 80, positive conditional: 80, positive unconditional: 0, negative: 50, negative conditional: 50, negative unconditional: 0, unknown: 53, unknown conditional: 53, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 54, Positive conditional cache size: 54, Positive unconditional cache size: 0, Negative cache size: 21, Negative conditional cache size: 21, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.9ms, 24 PlacesBefore, 24 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 25, positive conditional: 25, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 3, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 3, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 37, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 65, Positive conditional cache size: 65, Positive unconditional cache size: 0, Negative cache size: 23, Negative conditional cache size: 23, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 57.1ms, 28 PlacesBefore, 28 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 134 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 5, positive unconditional: 3, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 5, positive unconditional: 3, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 47, negative conditional: 37, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 26, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 73, Positive conditional cache size: 73, Positive unconditional cache size: 0, Negative cache size: 26, Negative conditional cache size: 26, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 125.6ms, 31 PlacesBefore, 31 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 134 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 96 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 88, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 21, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 76, Positive conditional cache size: 76, Positive unconditional cache size: 0, Negative cache size: 29, Negative conditional cache size: 29, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 764.8ms, 34 PlacesBefore, 34 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 142 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 110 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 5, positive unconditional: 5, 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: 11, positive: 10, positive conditional: 5, positive unconditional: 5, 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: 11, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 1, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 35, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 25, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 78, Positive conditional cache size: 78, Positive unconditional cache size: 0, Negative cache size: 21, Negative conditional cache size: 21, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.2ms, 43 PlacesBefore, 42 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 124 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 25 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 84, Positive conditional cache size: 84, Positive unconditional cache size: 0, Negative cache size: 22, Negative conditional cache size: 22, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2700.9ms, 47 PlacesBefore, 47 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 47 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 80, Positive conditional cache size: 80, Positive unconditional cache size: 0, Negative cache size: 12, Negative conditional cache size: 12, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.3ms, 47 PlacesBefore, 47 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 80, Positive conditional cache size: 80, Positive unconditional cache size: 0, Negative cache size: 12, Negative conditional cache size: 12, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.7ms, 50 PlacesBefore, 50 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 96 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): 92, Positive cache size: 80, Positive conditional cache size: 80, Positive unconditional cache size: 0, Negative cache size: 12, Negative conditional cache size: 12, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5633.3ms, 57 PlacesBefore, 51 PlacesAfterwards, 28 TransitionsBefore, 23 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 30 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 30, positive conditional: 30, 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: 23, positive: 23, positive conditional: 23, 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: 23, positive: 23, positive conditional: 23, 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: 23, positive: 23, positive conditional: 0, positive unconditional: 23, 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: 30, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 12, Positive conditional cache size: 12, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 858.9ms, 38 PlacesBefore, 36 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 8 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): 13, Positive cache size: 11, Positive conditional cache size: 11, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L715] 0 _Bool y$flush_delayed; [L716] 0 int y$mem_tmp; [L717] 0 _Bool y$r_buff0_thd0; [L718] 0 _Bool y$r_buff0_thd1; [L719] 0 _Bool y$r_buff0_thd2; [L720] 0 _Bool y$r_buff1_thd0; [L721] 0 _Bool y$r_buff1_thd1; [L722] 0 _Bool y$r_buff1_thd2; [L723] 0 _Bool y$read_delayed; [L724] 0 int *y$read_delayed_var; [L725] 0 int y$w_buff0; [L726] 0 _Bool y$w_buff0_used; [L727] 0 int y$w_buff1; [L728] 0 _Bool y$w_buff1_used; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2477; [L791] FCALL, FORK 0 pthread_create(&t2477, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 [L745] 1 x = 1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2478; [L793] FCALL, FORK 0 pthread_create(&t2478, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 24497.4ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1170.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8005.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 59 SDslu, 32 SDs, 0 SdLazy, 263 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 373.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 396.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=8, InterpolantAutomatonStates: 55, 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: 34.3ms SsaConstructionTime, 370.7ms SatisfiabilityAnalysisTime, 781.6ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...