/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/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:07:05,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:07:05,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:07:05,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:07:05,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:07:05,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:07:05,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:07:05,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:07:05,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:07:05,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:07:05,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:07:05,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:07:05,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:07:05,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:07:05,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:07:05,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:07:05,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:07:05,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:07:05,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:07:05,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:07:05,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:07:05,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:07:05,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:07:05,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:07:05,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:07:05,574 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:07:05,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:07:05,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:07:05,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:07:05,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:07:05,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:07:05,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:07:05,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:07:05,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:07:05,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:07:05,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:07:05,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:07:05,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:07:05,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:07:05,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:07:05,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:07:05,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:07:05,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:07:05,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:07:05,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:07:05,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:07:05,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:07:05,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:07:05,581 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:07:05,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:07:05,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:07:05,581 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:07:05,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:07:06,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:07:06,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:07:06,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:07:06,013 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:07:06,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-04-29 00:07:06,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d914165/3cc83148e97d47afadc800171ff522e5/FLAG6b8b434e6 [2021-04-29 00:07:06,882 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:07:06,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-04-29 00:07:06,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d914165/3cc83148e97d47afadc800171ff522e5/FLAG6b8b434e6 [2021-04-29 00:07:07,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75d914165/3cc83148e97d47afadc800171ff522e5 [2021-04-29 00:07:07,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:07:07,212 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:07:07,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:07:07,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:07:07,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:07:07,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:07,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2154cf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07, skipping insertion in model container [2021-04-29 00:07:07,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:07,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:07:07,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:07:07,459 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/safe018_pso.oepc.i[950,963] [2021-04-29 00:07:07,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:07:07,717 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:07:07,736 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/safe018_pso.oepc.i[950,963] [2021-04-29 00:07:07,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:07:07,942 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:07:07,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07 WrapperNode [2021-04-29 00:07:07,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:07:07,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:07:07,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:07:07,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:07:07,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:07:08,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:07:08,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:07:08,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:07:08,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... [2021-04-29 00:07:08,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:07:08,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:07:08,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:07:08,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:07:08,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:07:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:07:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:07:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:07:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:07:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:07:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:07:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:07:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:07:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:07:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:07:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:07:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:07:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:07:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:07:08,237 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:07:08,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:07:08,810 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:07:08,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:07:08 BoogieIcfgContainer [2021-04-29 00:07:08,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:07:08,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:07:08,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:07:08,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:07:08,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:07:07" (1/3) ... [2021-04-29 00:07:08,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ffc525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:07:08, skipping insertion in model container [2021-04-29 00:07:08,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:07:07" (2/3) ... [2021-04-29 00:07:08,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ffc525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:07:08, skipping insertion in model container [2021-04-29 00:07:08,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:07:08" (3/3) ... [2021-04-29 00:07:08,821 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2021-04-29 00:07:08,828 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:07:08,834 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:07:08,835 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:07:08,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,876 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,876 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,877 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,877 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,877 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,878 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,878 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,879 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,880 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,882 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,882 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,889 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,902 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,903 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,903 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:07:08,906 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:07:08,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:07:08,959 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:07:08,960 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:07:08,960 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:07:08,960 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:07:08,960 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:07:08,960 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:07:08,960 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:07:08,960 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:07:08,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-04-29 00:07:09,018 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-04-29 00:07:09,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:09,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 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. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-04-29 00:07:09,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-04-29 00:07:09,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:09,030 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:09,048 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:09,052 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:09,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-04-29 00:07:09,074 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-04-29 00:07:09,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:09,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-04-29 00:07:09,078 INFO L146 LiptonReduction]: Number of co-enabled transitions 804 [2021-04-29 00:07:13,521 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:07:13,704 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:07:13,897 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:07:14,106 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:07:14,293 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:07:14,495 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:07:14,661 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 00:07:15,247 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:07:15,404 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:07:15,580 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:07:15,772 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:07:17,126 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:07:17,232 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-29 00:07:17,464 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:07:17,575 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-29 00:07:18,039 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:07:18,332 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:07:19,066 INFO L158 LiptonReduction]: Checked pairs total: 5311 [2021-04-29 00:07:19,066 INFO L160 LiptonReduction]: Total number of compositions: 90 [2021-04-29 00:07:19,070 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10041 [2021-04-29 00:07:19,091 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-04-29 00:07:19,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:19,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:19,093 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:19,093 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:19,099 INFO L82 PathProgramCache]: Analyzing trace with hash -541709222, now seen corresponding path program 1 times [2021-04-29 00:07:19,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:19,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496014214] [2021-04-29 00:07:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:19,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:19,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:19,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496014214] [2021-04-29 00:07:19,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:19,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:07:19,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333269749] [2021-04-29 00:07:19,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:07:19,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:19,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:07:19,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:07:19,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 164 [2021-04-29 00:07:19,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:19,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 164 [2021-04-29 00:07:19,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:19,542 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-04-29 00:07:19,543 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:19,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 359 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 76. Up to 18 conditions per place. [2021-04-29 00:07:19,545 INFO L132 encePairwiseOnDemand]: 148/164 looper letters, 1 selfloop transitions, 2 changer transitions 48/72 dead transitions. [2021-04-29 00:07:19,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 205 flow [2021-04-29 00:07:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:07:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:07:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2021-04-29 00:07:19,563 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8130081300813008 [2021-04-29 00:07:19,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2021-04-29 00:07:19,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2021-04-29 00:07:19,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:19,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2021-04-29 00:07:19,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,586 INFO L185 Difference]: Start difference. First operand has 77 places, 67 transitions, 143 flow. Second operand 3 states and 400 transitions. [2021-04-29 00:07:19,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 205 flow [2021-04-29 00:07:19,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:07:19,593 INFO L241 Difference]: Finished difference. Result has 77 places, 24 transitions, 62 flow [2021-04-29 00:07:19,595 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=77, PETRI_TRANSITIONS=24} [2021-04-29 00:07:19,596 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2021-04-29 00:07:19,596 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:19,597 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 24 transitions, 62 flow [2021-04-29 00:07:19,597 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 24 transitions, 62 flow [2021-04-29 00:07:19,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 62 flow [2021-04-29 00:07:19,602 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-04-29 00:07:19,602 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:19,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:19,603 INFO L146 LiptonReduction]: Number of co-enabled transitions 292 [2021-04-29 00:07:19,682 INFO L158 LiptonReduction]: Checked pairs total: 304 [2021-04-29 00:07:19,682 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:19,682 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-04-29 00:07:19,684 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2021-04-29 00:07:19,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,685 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:19,685 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:19,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:07:19,685 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash 386881936, now seen corresponding path program 1 times [2021-04-29 00:07:19,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:19,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788505522] [2021-04-29 00:07:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:19,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:19,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:19,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788505522] [2021-04-29 00:07:19,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:19,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:07:19,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572443660] [2021-04-29 00:07:19,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:07:19,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:19,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:07:19,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:07:19,769 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 164 [2021-04-29 00:07:19,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:19,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 164 [2021-04-29 00:07:19,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:19,782 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-04-29 00:07:19,782 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 00:07:19,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 24 events. 0/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:19,783 INFO L132 encePairwiseOnDemand]: 161/164 looper letters, 1 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2021-04-29 00:07:19,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 24 transitions, 68 flow [2021-04-29 00:07:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:07:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:07:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2021-04-29 00:07:19,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782520325203252 [2021-04-29 00:07:19,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2021-04-29 00:07:19,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2021-04-29 00:07:19,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:19,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2021-04-29 00:07:19,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,796 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 3 states and 385 transitions. [2021-04-29 00:07:19,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 24 transitions, 68 flow [2021-04-29 00:07:19,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:07:19,798 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 64 flow [2021-04-29 00:07:19,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-04-29 00:07:19,799 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -42 predicate places. [2021-04-29 00:07:19,799 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:19,799 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 64 flow [2021-04-29 00:07:19,800 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 64 flow [2021-04-29 00:07:19,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 23 transitions, 64 flow [2021-04-29 00:07:19,805 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-04-29 00:07:19,805 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 00:07:19,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 23 events. 0/23 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 40 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:19,806 INFO L146 LiptonReduction]: Number of co-enabled transitions 266 [2021-04-29 00:07:19,809 INFO L158 LiptonReduction]: Checked pairs total: 267 [2021-04-29 00:07:19,809 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:19,809 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-04-29 00:07:19,811 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 64 flow [2021-04-29 00:07:19,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,812 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:19,812 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:19,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:07:19,812 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:19,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash -891563145, now seen corresponding path program 1 times [2021-04-29 00:07:19,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:19,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016317492] [2021-04-29 00:07:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:19,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:19,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:19,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:19,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:19,921 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:07:19,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:19,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016317492] [2021-04-29 00:07:19,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:19,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:07:19,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299871850] [2021-04-29 00:07:19,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:07:19,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:07:19,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:07:19,951 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 164 [2021-04-29 00:07:19,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:19,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:19,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 164 [2021-04-29 00:07:19,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:19,998 INFO L129 PetriNetUnfolder]: 4/46 cut-off events. [2021-04-29 00:07:19,998 INFO L130 PetriNetUnfolder]: For 19/23 co-relation queries the response was YES. [2021-04-29 00:07:19,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 46 events. 4/46 cut-off events. For 19/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 161 event pairs, 3 based on Foata normal form. 5/34 useless extension candidates. Maximal degree in co-relation 77. Up to 8 conditions per place. [2021-04-29 00:07:19,999 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 3 selfloop transitions, 3 changer transitions 3/26 dead transitions. [2021-04-29 00:07:19,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 89 flow [2021-04-29 00:07:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:07:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:07:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2021-04-29 00:07:20,004 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6814024390243902 [2021-04-29 00:07:20,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2021-04-29 00:07:20,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2021-04-29 00:07:20,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:20,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2021-04-29 00:07:20,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,011 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 64 flow. Second operand 4 states and 447 transitions. [2021-04-29 00:07:20,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 89 flow [2021-04-29 00:07:20,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:07:20,013 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:20,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-04-29 00:07:20,014 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -40 predicate places. [2021-04-29 00:07:20,014 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:20,014 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:20,014 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:20,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:20,019 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-04-29 00:07:20,019 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 00:07:20,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 23 events. 0/23 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:20,020 INFO L146 LiptonReduction]: Number of co-enabled transitions 204 [2021-04-29 00:07:20,054 INFO L158 LiptonReduction]: Checked pairs total: 159 [2021-04-29 00:07:20,054 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:20,055 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-04-29 00:07:20,056 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 74 flow [2021-04-29 00:07:20,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,057 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:20,057 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:20,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:07:20,058 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:20,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1895319952, now seen corresponding path program 1 times [2021-04-29 00:07:20,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:20,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263699341] [2021-04-29 00:07:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:20,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:20,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:20,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:20,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:20,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263699341] [2021-04-29 00:07:20,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:20,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:07:20,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704397184] [2021-04-29 00:07:20,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:07:20,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:07:20,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:07:20,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 164 [2021-04-29 00:07:20,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:20,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 164 [2021-04-29 00:07:20,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:20,166 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2021-04-29 00:07:20,166 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-04-29 00:07:20,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 47 events. 2/47 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 149 event pairs, 1 based on Foata normal form. 4/35 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2021-04-29 00:07:20,167 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 2 selfloop transitions, 3 changer transitions 4/26 dead transitions. [2021-04-29 00:07:20,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 97 flow [2021-04-29 00:07:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:07:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:07:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2021-04-29 00:07:20,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7286585365853658 [2021-04-29 00:07:20,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 478 transitions. [2021-04-29 00:07:20,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 478 transitions. [2021-04-29 00:07:20,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:20,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 478 transitions. [2021-04-29 00:07:20,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,177 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 74 flow. Second operand 4 states and 478 transitions. [2021-04-29 00:07:20,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 97 flow [2021-04-29 00:07:20,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 78 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-04-29 00:07:20,179 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 68 flow [2021-04-29 00:07:20,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2021-04-29 00:07:20,180 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -41 predicate places. [2021-04-29 00:07:20,180 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:20,180 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 22 transitions, 68 flow [2021-04-29 00:07:20,181 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 22 transitions, 68 flow [2021-04-29 00:07:20,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 22 transitions, 68 flow [2021-04-29 00:07:20,185 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-04-29 00:07:20,186 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 00:07:20,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 22 events. 0/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:07:20,186 INFO L146 LiptonReduction]: Number of co-enabled transitions 154 [2021-04-29 00:07:20,222 INFO L158 LiptonReduction]: Checked pairs total: 92 [2021-04-29 00:07:20,222 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:20,223 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-04-29 00:07:20,224 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 68 flow [2021-04-29 00:07:20,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:20,225 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:20,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:07:20,226 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:20,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2095607142, now seen corresponding path program 1 times [2021-04-29 00:07:20,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:20,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268050666] [2021-04-29 00:07:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:20,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:20,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:20,304 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:20,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:20,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268050666] [2021-04-29 00:07:20,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:20,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:07:20,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76507747] [2021-04-29 00:07:20,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:07:20,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:07:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:07:20,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 164 [2021-04-29 00:07:20,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:20,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 164 [2021-04-29 00:07:20,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:20,519 INFO L129 PetriNetUnfolder]: 432/696 cut-off events. [2021-04-29 00:07:20,520 INFO L130 PetriNetUnfolder]: For 671/720 co-relation queries the response was YES. [2021-04-29 00:07:20,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 696 events. 432/696 cut-off events. For 671/720 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 3820 event pairs, 216 based on Foata normal form. 63/355 useless extension candidates. Maximal degree in co-relation 1578. Up to 541 conditions per place. [2021-04-29 00:07:20,527 INFO L132 encePairwiseOnDemand]: 152/164 looper letters, 11 selfloop transitions, 10 changer transitions 19/50 dead transitions. [2021-04-29 00:07:20,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 204 flow [2021-04-29 00:07:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:07:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:07:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 572 transitions. [2021-04-29 00:07:20,533 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2021-04-29 00:07:20,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 572 transitions. [2021-04-29 00:07:20,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 572 transitions. [2021-04-29 00:07:20,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:20,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 572 transitions. [2021-04-29 00:07:20,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,540 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 68 flow. Second operand 5 states and 572 transitions. [2021-04-29 00:07:20,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 204 flow [2021-04-29 00:07:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 192 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-04-29 00:07:20,549 INFO L241 Difference]: Finished difference. Result has 38 places, 31 transitions, 146 flow [2021-04-29 00:07:20,549 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2021-04-29 00:07:20,549 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -39 predicate places. [2021-04-29 00:07:20,549 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:20,550 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 31 transitions, 146 flow [2021-04-29 00:07:20,550 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 31 transitions, 146 flow [2021-04-29 00:07:20,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 146 flow [2021-04-29 00:07:20,628 INFO L129 PetriNetUnfolder]: 351/551 cut-off events. [2021-04-29 00:07:20,629 INFO L130 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2021-04-29 00:07:20,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 551 events. 351/551 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 2739 event pairs, 189 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 1636. Up to 478 conditions per place. [2021-04-29 00:07:20,637 INFO L146 LiptonReduction]: Number of co-enabled transitions 86 [2021-04-29 00:07:20,912 INFO L158 LiptonReduction]: Checked pairs total: 172 [2021-04-29 00:07:20,912 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 00:07:20,912 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 363 [2021-04-29 00:07:20,924 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 153 flow [2021-04-29 00:07:20,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:20,925 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:20,926 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:20,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:07:20,926 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:20,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:20,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1066178870, now seen corresponding path program 1 times [2021-04-29 00:07:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:20,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938660304] [2021-04-29 00:07:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:20,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:20,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:20,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:20,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:21,000 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:21,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:21,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938660304] [2021-04-29 00:07:21,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:21,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:07:21,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702668508] [2021-04-29 00:07:21,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:07:21,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:07:21,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:07:21,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 168 [2021-04-29 00:07:21,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:21,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 168 [2021-04-29 00:07:21,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:21,204 INFO L129 PetriNetUnfolder]: 342/652 cut-off events. [2021-04-29 00:07:21,204 INFO L130 PetriNetUnfolder]: For 640/1048 co-relation queries the response was YES. [2021-04-29 00:07:21,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 652 events. 342/652 cut-off events. For 640/1048 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 3871 event pairs, 54 based on Foata normal form. 88/386 useless extension candidates. Maximal degree in co-relation 2526. Up to 562 conditions per place. [2021-04-29 00:07:21,213 INFO L132 encePairwiseOnDemand]: 153/168 looper letters, 11 selfloop transitions, 19 changer transitions 20/60 dead transitions. [2021-04-29 00:07:21,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 417 flow [2021-04-29 00:07:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:07:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:07:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2021-04-29 00:07:21,217 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6875 [2021-04-29 00:07:21,217 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2021-04-29 00:07:21,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2021-04-29 00:07:21,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:21,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2021-04-29 00:07:21,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.5) internal successors, (693), 6 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,224 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 153 flow. Second operand 6 states and 693 transitions. [2021-04-29 00:07:21,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 417 flow [2021-04-29 00:07:21,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 405 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 00:07:21,238 INFO L241 Difference]: Finished difference. Result has 43 places, 40 transitions, 290 flow [2021-04-29 00:07:21,238 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2021-04-29 00:07:21,238 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -34 predicate places. [2021-04-29 00:07:21,238 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:21,239 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 40 transitions, 290 flow [2021-04-29 00:07:21,239 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 40 transitions, 290 flow [2021-04-29 00:07:21,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 290 flow [2021-04-29 00:07:21,332 INFO L129 PetriNetUnfolder]: 252/479 cut-off events. [2021-04-29 00:07:21,333 INFO L130 PetriNetUnfolder]: For 753/873 co-relation queries the response was YES. [2021-04-29 00:07:21,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 479 events. 252/479 cut-off events. For 753/873 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 2618 event pairs, 54 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 2164. Up to 394 conditions per place. [2021-04-29 00:07:21,338 INFO L146 LiptonReduction]: Number of co-enabled transitions 62 [2021-04-29 00:07:21,511 INFO L158 LiptonReduction]: Checked pairs total: 177 [2021-04-29 00:07:21,512 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 00:07:21,512 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 274 [2021-04-29 00:07:21,513 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 300 flow [2021-04-29 00:07:21,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:21,514 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:21,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:07:21,515 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash -820734932, now seen corresponding path program 1 times [2021-04-29 00:07:21,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:21,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109690091] [2021-04-29 00:07:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:21,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:21,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:21,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:21,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:21,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:21,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:21,597 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:07:21,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:21,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109690091] [2021-04-29 00:07:21,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:21,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:07:21,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073598125] [2021-04-29 00:07:21,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:07:21,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:21,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:07:21,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:07:21,611 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 171 [2021-04-29 00:07:21,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:21,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 171 [2021-04-29 00:07:21,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:21,802 INFO L129 PetriNetUnfolder]: 153/422 cut-off events. [2021-04-29 00:07:21,802 INFO L130 PetriNetUnfolder]: For 893/1076 co-relation queries the response was YES. [2021-04-29 00:07:21,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 422 events. 153/422 cut-off events. For 893/1076 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 2821 event pairs, 0 based on Foata normal form. 81/304 useless extension candidates. Maximal degree in co-relation 2135. Up to 346 conditions per place. [2021-04-29 00:07:21,806 INFO L132 encePairwiseOnDemand]: 153/171 looper letters, 2 selfloop transitions, 28 changer transitions 12/51 dead transitions. [2021-04-29 00:07:21,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 476 flow [2021-04-29 00:07:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:07:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:07:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 791 transitions. [2021-04-29 00:07:21,810 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2021-04-29 00:07:21,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 791 transitions. [2021-04-29 00:07:21,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 791 transitions. [2021-04-29 00:07:21,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:21,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 791 transitions. [2021-04-29 00:07:21,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,818 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:21,818 INFO L185 Difference]: Start difference. First operand has 41 places, 41 transitions, 300 flow. Second operand 7 states and 791 transitions. [2021-04-29 00:07:21,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 476 flow [2021-04-29 00:07:21,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 380 flow, removed 38 selfloop flow, removed 4 redundant places. [2021-04-29 00:07:21,828 INFO L241 Difference]: Finished difference. Result has 46 places, 39 transitions, 295 flow [2021-04-29 00:07:21,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2021-04-29 00:07:21,829 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -31 predicate places. [2021-04-29 00:07:21,829 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:21,829 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 39 transitions, 295 flow [2021-04-29 00:07:21,829 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 39 transitions, 295 flow [2021-04-29 00:07:21,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 295 flow [2021-04-29 00:07:21,853 INFO L129 PetriNetUnfolder]: 81/223 cut-off events. [2021-04-29 00:07:21,853 INFO L130 PetriNetUnfolder]: For 334/352 co-relation queries the response was YES. [2021-04-29 00:07:21,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 223 events. 81/223 cut-off events. For 334/352 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1209 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 972. Up to 163 conditions per place. [2021-04-29 00:07:21,856 INFO L146 LiptonReduction]: Number of co-enabled transitions 40 [2021-04-29 00:07:22,095 INFO L158 LiptonReduction]: Checked pairs total: 54 [2021-04-29 00:07:22,096 INFO L160 LiptonReduction]: Total number of compositions: 9 [2021-04-29 00:07:22,096 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 267 [2021-04-29 00:07:22,097 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 295 flow [2021-04-29 00:07:22,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:22,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:07:22,098 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:07:22,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 00:07:22,099 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:07:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:07:22,099 INFO L82 PathProgramCache]: Analyzing trace with hash -562604228, now seen corresponding path program 1 times [2021-04-29 00:07:22,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:07:22,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613255180] [2021-04-29 00:07:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:07:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:07:22,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:22,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:07:22,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:07:22,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:07:22,144 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:07:22,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:07:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:07:22,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613255180] [2021-04-29 00:07:22,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:07:22,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:07:22,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220134564] [2021-04-29 00:07:22,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:07:22,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:07:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:07:22,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:07:22,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 180 [2021-04-29 00:07:22,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:22,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:07:22,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 180 [2021-04-29 00:07:22,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:07:22,234 INFO L129 PetriNetUnfolder]: 81/196 cut-off events. [2021-04-29 00:07:22,234 INFO L130 PetriNetUnfolder]: For 460/507 co-relation queries the response was YES. [2021-04-29 00:07:22,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 196 events. 81/196 cut-off events. For 460/507 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 952 event pairs, 0 based on Foata normal form. 30/121 useless extension candidates. Maximal degree in co-relation 916. Up to 163 conditions per place. [2021-04-29 00:07:22,235 INFO L132 encePairwiseOnDemand]: 160/180 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2021-04-29 00:07:22,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 325 flow [2021-04-29 00:07:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:07:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:07:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2021-04-29 00:07:22,239 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6233333333333333 [2021-04-29 00:07:22,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2021-04-29 00:07:22,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2021-04-29 00:07:22,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:07:22,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2021-04-29 00:07:22,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:22,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:22,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:22,245 INFO L185 Difference]: Start difference. First operand has 42 places, 39 transitions, 295 flow. Second operand 5 states and 561 transitions. [2021-04-29 00:07:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 325 flow [2021-04-29 00:07:22,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 231 flow, removed 27 selfloop flow, removed 5 redundant places. [2021-04-29 00:07:22,249 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2021-04-29 00:07:22,249 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2021-04-29 00:07:22,249 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -37 predicate places. [2021-04-29 00:07:22,249 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:07:22,250 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 0 transitions, 0 flow [2021-04-29 00:07:22,250 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 0 transitions, 0 flow [2021-04-29 00:07:22,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:07:22,250 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:07:22,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:07:22,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:07:22,251 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:07:22,251 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:07:22,251 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:07:22,251 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 00:07:22,252 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:07:22,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:07:22,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:07:22,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:07:22 BasicIcfg [2021-04-29 00:07:22,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:07:22,259 INFO L168 Benchmark]: Toolchain (without parser) took 15087.42 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 277.5 MB in the beginning and 259.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 154.5 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:22,260 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 271.6 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:07:22,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.05 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 282.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:22,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.51 ms. Allocated memory is still 302.0 MB. Free memory was 282.3 MB in the beginning and 280.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:22,261 INFO L168 Benchmark]: Boogie Preprocessor took 65.11 ms. Allocated memory is still 302.0 MB. Free memory was 280.4 MB in the beginning and 278.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:22,261 INFO L168 Benchmark]: RCFGBuilder took 683.69 ms. Allocated memory is still 302.0 MB. Free memory was 278.3 MB in the beginning and 255.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:22,262 INFO L168 Benchmark]: TraceAbstraction took 13443.99 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 255.3 MB in the beginning and 259.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 132.2 MB. Max. memory is 16.0 GB. [2021-04-29 00:07:22,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 271.6 MB in the end (delta: 153.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 733.05 ms. Allocated memory is still 302.0 MB. Free memory was 274.2 MB in the beginning and 282.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 113.51 ms. Allocated memory is still 302.0 MB. Free memory was 282.3 MB in the beginning and 280.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 65.11 ms. Allocated memory is still 302.0 MB. Free memory was 280.4 MB in the beginning and 278.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 683.69 ms. Allocated memory is still 302.0 MB. Free memory was 278.3 MB in the beginning and 255.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13443.99 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 255.3 MB in the beginning and 259.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 132.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10014.4ms, 68 PlacesBefore, 77 PlacesAfterwards, 59 TransitionsBefore, 67 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 90 TotalNumberOfCompositions, 5311 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1443, positive: 1283, positive conditional: 1283, positive unconditional: 0, negative: 160, negative conditional: 160, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 782, positive: 723, positive conditional: 0, positive unconditional: 723, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 782, positive: 723, positive conditional: 0, positive unconditional: 723, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 782, positive: 697, positive conditional: 0, positive unconditional: 697, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 85, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 460, positive: 147, positive conditional: 0, positive unconditional: 147, negative: 313, negative conditional: 0, negative unconditional: 313, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1443, positive: 560, positive conditional: 560, positive unconditional: 0, negative: 101, negative conditional: 101, negative unconditional: 0, unknown: 782, unknown conditional: 782, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 777, Positive cache size: 718, Positive conditional cache size: 718, Positive unconditional cache size: 0, Negative cache size: 59, Negative conditional cache size: 59, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 84.9ms, 77 PlacesBefore, 34 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 292 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 120, positive: 99, positive conditional: 99, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 19, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 19, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 120, positive: 82, positive conditional: 82, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 19, unknown conditional: 19, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 796, Positive cache size: 735, Positive conditional cache size: 735, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5ms, 35 PlacesBefore, 34 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 266 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 267 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 110, positive: 91, positive conditional: 91, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 110, positive: 90, positive conditional: 90, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 797, Positive cache size: 736, Positive conditional cache size: 736, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.0ms, 37 PlacesBefore, 37 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 204 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 159 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 65, positive: 52, positive conditional: 52, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 3, positive unconditional: 14, 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: 17, positive: 17, positive conditional: 3, positive unconditional: 14, 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: 17, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 65, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 814, Positive cache size: 753, Positive conditional cache size: 753, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.6ms, 36 PlacesBefore, 35 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 92 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 56, positive conditional: 56, 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: 14, positive: 13, positive conditional: 4, positive unconditional: 9, 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: 14, positive: 13, positive conditional: 4, positive unconditional: 9, 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: 14, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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.Query Time [ms]: [ total: 33, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 43, positive conditional: 43, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 828, Positive cache size: 766, Positive conditional cache size: 766, Positive unconditional cache size: 0, Negative cache size: 62, Negative conditional cache size: 62, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 362.2ms, 38 PlacesBefore, 37 PlacesAfterwards, 31 TransitionsBefore, 32 TransitionsAfterwards, 86 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 172 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 106, positive: 94, positive conditional: 94, 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: 26, positive: 25, positive conditional: 20, 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: 26, positive: 25, positive conditional: 20, 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: 26, positive: 25, positive conditional: 0, positive unconditional: 25, 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: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 106, positive: 69, positive conditional: 69, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 854, Positive cache size: 791, Positive conditional cache size: 791, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 272.8ms, 43 PlacesBefore, 41 PlacesAfterwards, 40 TransitionsBefore, 41 TransitionsAfterwards, 62 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 6, positive unconditional: 1, 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: 8, positive: 7, positive conditional: 6, positive unconditional: 1, 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: 8, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 0, negative unconditional: 1, 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: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 42, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 862, Positive cache size: 798, Positive conditional cache size: 798, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 266.5ms, 46 PlacesBefore, 42 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 54 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 54, positive conditional: 54, 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: 6, positive: 6, positive conditional: 6, 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: 6, positive: 6, positive conditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 54, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 868, Positive cache size: 804, Positive conditional cache size: 804, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 40 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 868, Positive cache size: 804, Positive conditional cache size: 804, Positive unconditional cache size: 0, Negative cache size: 64, Negative conditional cache size: 64, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 13299.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1106.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10118.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 49 SDslu, 14 SDs, 0 SdLazy, 302 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 350.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 177.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=6, InterpolantAutomatonStates: 37, 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: 23.0ms SsaConstructionTime, 179.0ms SatisfiabilityAnalysisTime, 528.9ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...