/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/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:17:53,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:17:53,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:17:53,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:17:53,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:17:53,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:17:53,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:17:53,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:17:53,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:17:53,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:17:53,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:17:53,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:17:53,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:17:53,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:17:53,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:17:53,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:17:53,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:17:53,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:17:53,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:17:53,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:17:53,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:17:53,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:17:53,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:17:53,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:17:53,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:17:53,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:17:53,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:17:53,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:17:53,661 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 [2021-04-28 23:17:53,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:17:53,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:17:53,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:17:53,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:17:53,701 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:17:53,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:17:53,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:17:53,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:17:53,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:17:53,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:17:53,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:17:53,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:17:53,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:17:53,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:17:53,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:17:53,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:17:53,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:17:53,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:17:53,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:17:53,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:17:53,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:17:53,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:17:53,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:17:53,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:17:53,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:17:53,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:17:53,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:17:53,707 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:17:53,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:17:53,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:17:53,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:17:54,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:17:54,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:17:54,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:17:54,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:17:54,124 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:17:54,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2021-04-28 23:17:54,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717bd6dfc/8c11ac8a16b343eebe77403db8c990e5/FLAGe2a97031d [2021-04-28 23:17:54,974 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:17:54,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2021-04-28 23:17:54,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717bd6dfc/8c11ac8a16b343eebe77403db8c990e5/FLAGe2a97031d [2021-04-28 23:17:55,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/717bd6dfc/8c11ac8a16b343eebe77403db8c990e5 [2021-04-28 23:17:55,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:17:55,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:17:55,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:17:55,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:17:55,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:17:55,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c21e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55, skipping insertion in model container [2021-04-28 23:17:55,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:17:55,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:17:55,464 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/safe000_pso.oepc.i[950,963] [2021-04-28 23:17:55,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:17:55,716 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:17:55,730 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/safe000_pso.oepc.i[950,963] [2021-04-28 23:17:55,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:17:55,919 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:17:55,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55 WrapperNode [2021-04-28 23:17:55,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:17:55,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:17:55,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:17:55,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:17:55,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:17:55,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:17:55,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:17:55,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:17:55,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:55,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:56,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (1/1) ... [2021-04-28 23:17:56,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:17:56,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:17:56,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:17:56,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:17:56,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (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 [2021-04-28 23:17:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:17:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:17:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:17:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:17:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:17:56,128 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:17:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:17:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:17:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:17:56,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:17:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:17:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:17:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:17:56,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:17:56,132 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:17:56,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:17:56,518 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:17:56,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:17:56 BoogieIcfgContainer [2021-04-28 23:17:56,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:17:56,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:17:56,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:17:56,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:17:56,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:17:55" (1/3) ... [2021-04-28 23:17:56,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216ff63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:17:56, skipping insertion in model container [2021-04-28 23:17:56,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:17:55" (2/3) ... [2021-04-28 23:17:56,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216ff63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:17:56, skipping insertion in model container [2021-04-28 23:17:56,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:17:56" (3/3) ... [2021-04-28 23:17:56,530 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2021-04-28 23:17:56,538 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:17:56,543 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:17:56,544 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:17:56,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,577 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,579 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,579 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,582 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,582 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,593 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:17:56,597 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:17:56,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 23:17:56,644 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:17:56,644 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:17:56,645 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:17:56,645 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:17:56,645 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:17:56,645 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:17:56,645 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:17:56,645 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:17:56,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:17:56,710 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-04-28 23:17:56,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:17:56,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-28 23:17:56,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:17:56,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-04-28 23:17:56,723 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:17:56,741 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:17:56,745 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:17:56,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-04-28 23:17:56,770 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-04-28 23:17:56,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:17:56,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-28 23:17:56,775 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-28 23:18:00,400 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:18:00,576 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:18:00,746 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:18:01,061 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:18:01,262 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:18:01,459 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:18:01,682 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:18:01,893 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:18:02,105 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:18:02,275 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-28 23:18:02,586 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:18:02,752 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:18:03,736 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:18:04,033 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:18:04,354 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:18:04,668 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:18:04,774 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-28 23:18:05,373 INFO L158 LiptonReduction]: Checked pairs total: 5648 [2021-04-28 23:18:05,374 INFO L160 LiptonReduction]: Total number of compositions: 84 [2021-04-28 23:18:05,378 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8656 [2021-04-28 23:18:05,400 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-04-28 23:18:05,400 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:18:05,401 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:18:05,401 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:18:05,402 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:18:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:18:05,408 INFO L82 PathProgramCache]: Analyzing trace with hash 351986949, now seen corresponding path program 1 times [2021-04-28 23:18:05,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:18:05,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478316065] [2021-04-28 23:18:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:18:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:18:05,732 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:18:05,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:18:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:18:05,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478316065] [2021-04-28 23:18:05,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:18:05,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:18:05,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088563380] [2021-04-28 23:18:05,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:18:05,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:18:05,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:18:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:18:05,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:18:05,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:05,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:18:05,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:18:05,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:18:05,968 INFO L129 PetriNetUnfolder]: 247/675 cut-off events. [2021-04-28 23:18:05,968 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:18:05,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 675 events. 247/675 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5168 event pairs, 86 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 1075. Up to 271 conditions per place. [2021-04-28 23:18:05,975 INFO L132 encePairwiseOnDemand]: 141/159 looper letters, 6 selfloop transitions, 6 changer transitions 30/74 dead transitions. [2021-04-28 23:18:05,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 219 flow [2021-04-28 23:18:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:18:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:18:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2021-04-28 23:18:05,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2021-04-28 23:18:05,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2021-04-28 23:18:05,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2021-04-28 23:18:05,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:18:06,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2021-04-28 23:18:06,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,015 INFO L185 Difference]: Start difference. First operand has 75 places, 65 transitions, 139 flow. Second operand 3 states and 351 transitions. [2021-04-28 23:18:06,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 219 flow [2021-04-28 23:18:06,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 23:18:06,023 INFO L241 Difference]: Finished difference. Result has 76 places, 44 transitions, 130 flow [2021-04-28 23:18:06,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=76, PETRI_TRANSITIONS=44} [2021-04-28 23:18:06,026 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2021-04-28 23:18:06,027 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:18:06,027 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 44 transitions, 130 flow [2021-04-28 23:18:06,027 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 44 transitions, 130 flow [2021-04-28 23:18:06,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 130 flow [2021-04-28 23:18:06,050 INFO L129 PetriNetUnfolder]: 47/212 cut-off events. [2021-04-28 23:18:06,050 INFO L130 PetriNetUnfolder]: For 20/23 co-relation queries the response was YES. [2021-04-28 23:18:06,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 212 events. 47/212 cut-off events. For 20/23 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1304 event pairs, 17 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 353. Up to 66 conditions per place. [2021-04-28 23:18:06,056 INFO L146 LiptonReduction]: Number of co-enabled transitions 988 [2021-04-28 23:18:06,070 INFO L158 LiptonReduction]: Checked pairs total: 233 [2021-04-28 23:18:06,070 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:18:06,070 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-04-28 23:18:06,072 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 130 flow [2021-04-28 23:18:06,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,073 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:18:06,073 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:18:06,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:18:06,074 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:18:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:18:06,075 INFO L82 PathProgramCache]: Analyzing trace with hash 268622995, now seen corresponding path program 1 times [2021-04-28 23:18:06,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:18:06,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066470433] [2021-04-28 23:18:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:18:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:18:06,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:06,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:06,193 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:18:06,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:18:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:18:06,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066470433] [2021-04-28 23:18:06,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:18:06,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:18:06,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48287515] [2021-04-28 23:18:06,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:18:06,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:18:06,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:18:06,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:18:06,213 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:18:06,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 130 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) [2021-04-28 23:18:06,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:18:06,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:18:06,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:18:06,258 INFO L129 PetriNetUnfolder]: 39/172 cut-off events. [2021-04-28 23:18:06,258 INFO L130 PetriNetUnfolder]: For 32/85 co-relation queries the response was YES. [2021-04-28 23:18:06,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 172 events. 39/172 cut-off events. For 32/85 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 958 event pairs, 4 based on Foata normal form. 7/121 useless extension candidates. Maximal degree in co-relation 378. Up to 54 conditions per place. [2021-04-28 23:18:06,261 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 11 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2021-04-28 23:18:06,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 196 flow [2021-04-28 23:18:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:18:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:18:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 439 transitions. [2021-04-28 23:18:06,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.690251572327044 [2021-04-28 23:18:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 439 transitions. [2021-04-28 23:18:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 439 transitions. [2021-04-28 23:18:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:18:06,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 439 transitions. [2021-04-28 23:18:06,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,282 INFO L185 Difference]: Start difference. First operand has 50 places, 44 transitions, 130 flow. Second operand 4 states and 439 transitions. [2021-04-28 23:18:06,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 196 flow [2021-04-28 23:18:06,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:18:06,288 INFO L241 Difference]: Finished difference. Result has 54 places, 47 transitions, 166 flow [2021-04-28 23:18:06,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2021-04-28 23:18:06,289 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2021-04-28 23:18:06,290 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:18:06,290 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 47 transitions, 166 flow [2021-04-28 23:18:06,292 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 47 transitions, 166 flow [2021-04-28 23:18:06,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 166 flow [2021-04-28 23:18:06,320 INFO L129 PetriNetUnfolder]: 39/211 cut-off events. [2021-04-28 23:18:06,320 INFO L130 PetriNetUnfolder]: For 73/77 co-relation queries the response was YES. [2021-04-28 23:18:06,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 211 events. 39/211 cut-off events. For 73/77 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1356 event pairs, 16 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 391. Up to 54 conditions per place. [2021-04-28 23:18:06,329 INFO L146 LiptonReduction]: Number of co-enabled transitions 1086 [2021-04-28 23:18:06,340 INFO L158 LiptonReduction]: Checked pairs total: 248 [2021-04-28 23:18:06,340 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:18:06,341 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-04-28 23:18:06,343 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 166 flow [2021-04-28 23:18:06,344 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) [2021-04-28 23:18:06,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:18:06,344 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:18:06,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:18:06,345 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:18:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:18:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1973307774, now seen corresponding path program 1 times [2021-04-28 23:18:06,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:18:06,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055650993] [2021-04-28 23:18:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:18:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:18:06,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:06,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:06,455 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:18:06,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:18:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:18:06,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055650993] [2021-04-28 23:18:06,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:18:06,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:18:06,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442725642] [2021-04-28 23:18:06,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:18:06,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:18:06,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:18:06,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:18:06,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 159 [2021-04-28 23:18:06,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:18:06,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 159 [2021-04-28 23:18:06,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:18:06,577 INFO L129 PetriNetUnfolder]: 72/256 cut-off events. [2021-04-28 23:18:06,578 INFO L130 PetriNetUnfolder]: For 203/353 co-relation queries the response was YES. [2021-04-28 23:18:06,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 256 events. 72/256 cut-off events. For 203/353 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1545 event pairs, 1 based on Foata normal form. 14/192 useless extension candidates. Maximal degree in co-relation 652. Up to 67 conditions per place. [2021-04-28 23:18:06,581 INFO L132 encePairwiseOnDemand]: 151/159 looper letters, 15 selfloop transitions, 20 changer transitions 0/66 dead transitions. [2021-04-28 23:18:06,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 352 flow [2021-04-28 23:18:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:18:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:18:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-04-28 23:18:06,584 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6855345911949685 [2021-04-28 23:18:06,585 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-04-28 23:18:06,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-04-28 23:18:06,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:18:06,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-04-28 23:18:06,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,591 INFO L185 Difference]: Start difference. First operand has 54 places, 47 transitions, 166 flow. Second operand 5 states and 545 transitions. [2021-04-28 23:18:06,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 352 flow [2021-04-28 23:18:06,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:18:06,601 INFO L241 Difference]: Finished difference. Result has 61 places, 60 transitions, 345 flow [2021-04-28 23:18:06,601 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2021-04-28 23:18:06,601 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2021-04-28 23:18:06,601 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:18:06,602 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 60 transitions, 345 flow [2021-04-28 23:18:06,603 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 60 transitions, 345 flow [2021-04-28 23:18:06,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 60 transitions, 345 flow [2021-04-28 23:18:06,638 INFO L129 PetriNetUnfolder]: 57/252 cut-off events. [2021-04-28 23:18:06,638 INFO L130 PetriNetUnfolder]: For 330/365 co-relation queries the response was YES. [2021-04-28 23:18:06,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 252 events. 57/252 cut-off events. For 330/365 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1642 event pairs, 4 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 699. Up to 58 conditions per place. [2021-04-28 23:18:06,647 INFO L146 LiptonReduction]: Number of co-enabled transitions 1502 [2021-04-28 23:18:06,659 INFO L158 LiptonReduction]: Checked pairs total: 39 [2021-04-28 23:18:06,660 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:18:06,660 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-04-28 23:18:06,665 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 345 flow [2021-04-28 23:18:06,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,666 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:18:06,666 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:18:06,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:18:06,666 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:18:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:18:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1043000124, now seen corresponding path program 1 times [2021-04-28 23:18:06,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:18:06,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582086739] [2021-04-28 23:18:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:18:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:18:06,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:06,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:06,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:06,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:18:06,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582086739] [2021-04-28 23:18:06,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:18:06,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:18:06,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282660772] [2021-04-28 23:18:06,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:18:06,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:18:06,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:18:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:18:06,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 159 [2021-04-28 23:18:06,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 345 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) [2021-04-28 23:18:06,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:18:06,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 159 [2021-04-28 23:18:06,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:18:06,824 INFO L129 PetriNetUnfolder]: 42/225 cut-off events. [2021-04-28 23:18:06,825 INFO L130 PetriNetUnfolder]: For 467/611 co-relation queries the response was YES. [2021-04-28 23:18:06,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 225 events. 42/225 cut-off events. For 467/611 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1492 event pairs, 6 based on Foata normal form. 18/162 useless extension candidates. Maximal degree in co-relation 641. Up to 52 conditions per place. [2021-04-28 23:18:06,828 INFO L132 encePairwiseOnDemand]: 155/159 looper letters, 1 selfloop transitions, 5 changer transitions 14/60 dead transitions. [2021-04-28 23:18:06,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 361 flow [2021-04-28 23:18:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:18:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:18:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2021-04-28 23:18:06,832 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7468553459119497 [2021-04-28 23:18:06,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2021-04-28 23:18:06,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2021-04-28 23:18:06,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:18:06,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2021-04-28 23:18:06,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,840 INFO L185 Difference]: Start difference. First operand has 61 places, 60 transitions, 345 flow. Second operand 4 states and 475 transitions. [2021-04-28 23:18:06,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 361 flow [2021-04-28 23:18:06,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 361 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 23:18:06,849 INFO L241 Difference]: Finished difference. Result has 66 places, 46 transitions, 244 flow [2021-04-28 23:18:06,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2021-04-28 23:18:06,850 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2021-04-28 23:18:06,850 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:18:06,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 46 transitions, 244 flow [2021-04-28 23:18:06,851 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 46 transitions, 244 flow [2021-04-28 23:18:06,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 46 transitions, 244 flow [2021-04-28 23:18:06,865 INFO L129 PetriNetUnfolder]: 14/108 cut-off events. [2021-04-28 23:18:06,866 INFO L130 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2021-04-28 23:18:06,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 108 events. 14/108 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 528 event pairs, 5 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 281. Up to 23 conditions per place. [2021-04-28 23:18:06,869 INFO L146 LiptonReduction]: Number of co-enabled transitions 938 [2021-04-28 23:18:06,879 INFO L158 LiptonReduction]: Checked pairs total: 27 [2021-04-28 23:18:06,880 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:18:06,880 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-04-28 23:18:06,883 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 244 flow [2021-04-28 23:18:06,884 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) [2021-04-28 23:18:06,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:18:06,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:18:06,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:18:06,885 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:18:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:18:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash -768506952, now seen corresponding path program 1 times [2021-04-28 23:18:06,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:18:06,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377152715] [2021-04-28 23:18:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:18:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:18:06,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:06,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:06,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:06,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:06,975 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:18:06,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:18:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:18:06,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377152715] [2021-04-28 23:18:06,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:18:06,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:18:06,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507048954] [2021-04-28 23:18:06,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:18:06,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:18:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:18:06,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:18:06,992 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:18:06,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:06,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:18:06,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:18:06,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:18:07,045 INFO L129 PetriNetUnfolder]: 8/91 cut-off events. [2021-04-28 23:18:07,045 INFO L130 PetriNetUnfolder]: For 174/186 co-relation queries the response was YES. [2021-04-28 23:18:07,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 91 events. 8/91 cut-off events. For 174/186 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 419 event pairs, 0 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 259. Up to 18 conditions per place. [2021-04-28 23:18:07,046 INFO L132 encePairwiseOnDemand]: 154/159 looper letters, 3 selfloop transitions, 4 changer transitions 29/52 dead transitions. [2021-04-28 23:18:07,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 52 transitions, 352 flow [2021-04-28 23:18:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:18:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:18:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2021-04-28 23:18:07,050 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6867924528301886 [2021-04-28 23:18:07,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2021-04-28 23:18:07,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2021-04-28 23:18:07,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:18:07,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2021-04-28 23:18:07,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,059 INFO L185 Difference]: Start difference. First operand has 63 places, 46 transitions, 244 flow. Second operand 5 states and 546 transitions. [2021-04-28 23:18:07,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 52 transitions, 352 flow [2021-04-28 23:18:07,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 279 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-04-28 23:18:07,063 INFO L241 Difference]: Finished difference. Result has 61 places, 23 transitions, 104 flow [2021-04-28 23:18:07,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=61, PETRI_TRANSITIONS=23} [2021-04-28 23:18:07,064 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2021-04-28 23:18:07,064 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:18:07,064 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 23 transitions, 104 flow [2021-04-28 23:18:07,065 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 23 transitions, 104 flow [2021-04-28 23:18:07,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 23 transitions, 104 flow [2021-04-28 23:18:07,069 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-04-28 23:18:07,069 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-04-28 23:18:07,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 27 events. 0/27 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-04-28 23:18:07,070 INFO L146 LiptonReduction]: Number of co-enabled transitions 132 [2021-04-28 23:18:07,074 INFO L158 LiptonReduction]: Checked pairs total: 15 [2021-04-28 23:18:07,074 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:18:07,074 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-04-28 23:18:07,083 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 23 transitions, 104 flow [2021-04-28 23:18:07,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,084 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:18:07,084 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:18:07,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:18:07,084 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:18:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:18:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 498259969, now seen corresponding path program 1 times [2021-04-28 23:18:07,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:18:07,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358635814] [2021-04-28 23:18:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:18:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:18:07,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:07,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:07,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:18:07,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:18:07,156 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:18:07,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:18:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:18:07,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358635814] [2021-04-28 23:18:07,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:18:07,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:18:07,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963856616] [2021-04-28 23:18:07,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:18:07,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:18:07,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:18:07,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:18:07,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2021-04-28 23:18:07,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 23 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:18:07,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2021-04-28 23:18:07,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:18:07,191 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-04-28 23:18:07,191 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-04-28 23:18:07,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 22 events. 0/22 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-28 23:18:07,192 INFO L132 encePairwiseOnDemand]: 156/159 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-04-28 23:18:07,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 22 transitions, 106 flow [2021-04-28 23:18:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:18:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:18:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2021-04-28 23:18:07,195 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6776729559748428 [2021-04-28 23:18:07,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2021-04-28 23:18:07,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2021-04-28 23:18:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:18:07,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2021-04-28 23:18:07,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,200 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,201 INFO L185 Difference]: Start difference. First operand has 48 places, 23 transitions, 104 flow. Second operand 4 states and 431 transitions. [2021-04-28 23:18:07,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 22 transitions, 106 flow [2021-04-28 23:18:07,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 65 flow, removed 3 selfloop flow, removed 15 redundant places. [2021-04-28 23:18:07,202 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-04-28 23:18:07,202 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-04-28 23:18:07,202 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -40 predicate places. [2021-04-28 23:18:07,203 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:18:07,203 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 0 transitions, 0 flow [2021-04-28 23:18:07,203 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 0 transitions, 0 flow [2021-04-28 23:18:07,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 23:18:07,204 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 23:18:07,204 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:18:07,204 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. [2021-04-28 23:18:07,204 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 23:18:07,204 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:18:07,204 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:18:07,204 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-04-28 23:18:07,206 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 23:18:07,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:18:07,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:18:07,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:18:07 BasicIcfg [2021-04-28 23:18:07,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 23:18:07,212 INFO L168 Benchmark]: Toolchain (without parser) took 12023.72 ms. Allocated memory was 323.0 MB in the beginning and 465.6 MB in the end (delta: 142.6 MB). Free memory was 297.0 MB in the beginning and 353.8 MB in the end (delta: -56.8 MB). Peak memory consumption was 87.0 MB. Max. memory is 16.0 GB. [2021-04-28 23:18:07,213 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 323.0 MB. Free memory is still 307.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:18:07,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.83 ms. Allocated memory is still 323.0 MB. Free memory was 293.8 MB in the beginning and 291.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.0 GB. [2021-04-28 23:18:07,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.83 ms. Allocated memory is still 323.0 MB. Free memory was 291.6 MB in the beginning and 289.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:18:07,215 INFO L168 Benchmark]: Boogie Preprocessor took 29.01 ms. Allocated memory is still 323.0 MB. Free memory was 289.5 MB in the beginning and 288.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:18:07,215 INFO L168 Benchmark]: RCFGBuilder took 515.90 ms. Allocated memory is still 323.0 MB. Free memory was 288.2 MB in the beginning and 266.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:18:07,216 INFO L168 Benchmark]: TraceAbstraction took 10689.03 ms. Allocated memory was 323.0 MB in the beginning and 465.6 MB in the end (delta: 142.6 MB). Free memory was 265.8 MB in the beginning and 353.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.0 GB. [2021-04-28 23:18:07,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 323.0 MB. Free memory is still 307.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 681.83 ms. Allocated memory is still 323.0 MB. Free memory was 293.8 MB in the beginning and 291.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.83 ms. Allocated memory is still 323.0 MB. Free memory was 291.6 MB in the beginning and 289.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.01 ms. Allocated memory is still 323.0 MB. Free memory was 289.5 MB in the beginning and 288.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 515.90 ms. Allocated memory is still 323.0 MB. Free memory was 288.2 MB in the beginning and 266.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10689.03 ms. Allocated memory was 323.0 MB in the beginning and 465.6 MB in the end (delta: 142.6 MB). Free memory was 265.8 MB in the beginning and 353.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8629.3ms, 69 PlacesBefore, 75 PlacesAfterwards, 60 TransitionsBefore, 65 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 5648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1621, positive: 1455, positive conditional: 1455, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 857, positive: 806, positive conditional: 0, positive unconditional: 806, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 857, positive: 806, positive conditional: 0, positive unconditional: 806, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 857, positive: 794, positive conditional: 0, positive unconditional: 794, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 314, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 247, negative conditional: 0, negative unconditional: 247, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1621, positive: 649, positive conditional: 649, positive unconditional: 0, negative: 115, negative conditional: 115, negative unconditional: 0, unknown: 857, unknown conditional: 857, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 836, Positive cache size: 785, Positive conditional cache size: 785, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.8ms, 76 PlacesBefore, 50 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 847, Positive cache size: 795, Positive conditional cache size: 795, Positive unconditional cache size: 0, Negative cache size: 52, Negative conditional cache size: 52, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 48.9ms, 54 PlacesBefore, 54 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 1086 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 248 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 97, positive: 90, positive conditional: 90, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 1, positive unconditional: 21, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 1, positive unconditional: 21, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 97, positive: 68, positive conditional: 68, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 23, unknown conditional: 23, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 870, Positive cache size: 817, Positive conditional cache size: 817, Positive unconditional cache size: 0, Negative cache size: 53, Negative conditional cache size: 53, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 56.4ms, 61 PlacesBefore, 61 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 1502 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 871, Positive cache size: 818, Positive conditional cache size: 818, Positive unconditional cache size: 0, Negative cache size: 53, Negative conditional cache size: 53, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.8ms, 66 PlacesBefore, 63 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 938 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 871, Positive cache size: 818, Positive conditional cache size: 818, Positive unconditional cache size: 0, Negative cache size: 53, Negative conditional cache size: 53, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6ms, 61 PlacesBefore, 48 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 15 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, 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: 1, positive: 1, positive conditional: 1, 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: 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 872, Positive cache size: 819, Positive conditional cache size: 819, Positive unconditional cache size: 0, Negative cache size: 53, Negative conditional cache size: 53, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2ms, 35 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): 872, Positive cache size: 819, Positive conditional cache size: 819, Positive unconditional cache size: 0, Negative cache size: 53, Negative conditional cache size: 53, 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10568.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 647.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8741.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 34 SDslu, 15 SDs, 0 SdLazy, 56 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=345occurred in iteration=3, InterpolantAutomatonStates: 25, 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: 26.9ms SsaConstructionTime, 184.3ms SatisfiabilityAnalysisTime, 519.4ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...