/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/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:49:01,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:49:01,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:49:01,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:49:01,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:49:01,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:49:01,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:49:01,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:49:01,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:49:01,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:49:01,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:49:01,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:49:01,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:49:01,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:49:01,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:49:01,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:49:01,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:49:01,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:49:01,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:49:01,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:49:01,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:49:01,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:49:01,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:49:01,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:49:01,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:49:01,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:49:01,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:49:01,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:49:01,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:49:01,832 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:49:01,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:49:01,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:49:01,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:49:01,837 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:49:01,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:49:01,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:49:01,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:49:01,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:49:01,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:49:01,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:49:01,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:49:01,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:49:01,840 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:49:01,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:49:01,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:49:01,841 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:49:02,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:49:02,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:49:02,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:49:02,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:49:02,102 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:49:02,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-26 00:49:02,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35addc7fa/febf428b06094c1f8dcae4fba9b34ae9/FLAG344b04643 [2021-03-26 00:49:02,654 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:49:02,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-26 00:49:02,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35addc7fa/febf428b06094c1f8dcae4fba9b34ae9/FLAG344b04643 [2021-03-26 00:49:02,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35addc7fa/febf428b06094c1f8dcae4fba9b34ae9 [2021-03-26 00:49:02,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:49:02,885 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:49:02,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:49:02,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:49:02,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:49:02,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:49:02" (1/1) ... [2021-03-26 00:49:02,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4487fd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:02, skipping insertion in model container [2021-03-26 00:49:02,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:49:02" (1/1) ... [2021-03-26 00:49:02,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:49:02,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:49:03,019 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/safe030_tso.opt.i[949,962] [2021-03-26 00:49:03,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:49:03,151 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:49:03,157 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/safe030_tso.opt.i[949,962] [2021-03-26 00:49:03,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:49:03,224 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:49:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03 WrapperNode [2021-03-26 00:49:03,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:49:03,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:49:03,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:49:03,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:49:03,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:49:03,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:49:03,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:49:03,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:49:03,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... [2021-03-26 00:49:03,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:49:03,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:49:03,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:49:03,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:49:03,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:49:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:49:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:49:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:49:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:49:03,348 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:49:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:49:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:49:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:49:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:49:03,349 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:49:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:49:03,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:49:03,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:49:03,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:49:03,351 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:49:03,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:49:03,668 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:49:03,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:49:03 BoogieIcfgContainer [2021-03-26 00:49:03,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:49:03,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:49:03,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:49:03,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:49:03,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:49:02" (1/3) ... [2021-03-26 00:49:03,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794f4b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:49:03, skipping insertion in model container [2021-03-26 00:49:03,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:49:03" (2/3) ... [2021-03-26 00:49:03,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794f4b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:49:03, skipping insertion in model container [2021-03-26 00:49:03,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:49:03" (3/3) ... [2021-03-26 00:49:03,676 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-03-26 00:49:03,680 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:49:03,682 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:49:03,683 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:49:03,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,710 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,710 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,713 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,713 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,723 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,724 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,725 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,725 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,725 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:49:03,728 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:49:03,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:49:03,757 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:49:03,757 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:49:03,757 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:49:03,757 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:49:03,757 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:49:03,757 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:49:03,757 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:49:03,757 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:49:03,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-26 00:49:03,796 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-26 00:49:03,796 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:49:03,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 00:49:03,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-26 00:49:03,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-26 00:49:03,811 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:03,818 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-26 00:49:03,820 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-26 00:49:03,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-26 00:49:03,838 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-26 00:49:03,838 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:49:03,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 00:49:03,840 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:49:05,164 INFO L154 LiptonReduction]: Checked pairs total: 1207 [2021-03-26 00:49:05,165 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:49:05,166 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1356 [2021-03-26 00:49:05,173 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 00:49:05,174 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:49:05,174 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:05,174 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:05,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:05,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1494745171, now seen corresponding path program 1 times [2021-03-26 00:49:05,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:05,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957882050] [2021-03-26 00:49:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:05,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:05,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:49:05,323 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:49:05,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:49:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:05,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957882050] [2021-03-26 00:49:05,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:05,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:49:05,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758260564] [2021-03-26 00:49:05,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:49:05,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:49:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:49:05,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2021-03-26 00:49:05,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:05,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:05,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2021-03-26 00:49:05,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:05,408 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-26 00:49:05,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:49:05,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 214 events. 90/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 995 event pairs, 28 based on Foata normal form. 14/218 useless extension candidates. Maximal degree in co-relation 380. Up to 85 conditions per place. [2021-03-26 00:49:05,410 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 7 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-03-26 00:49:05,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 89 flow [2021-03-26 00:49:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:49:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:49:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-03-26 00:49:05,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-03-26 00:49:05,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-03-26 00:49:05,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-03-26 00:49:05,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:05,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-03-26 00:49:05,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:05,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:05,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:05,427 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 279 transitions. [2021-03-26 00:49:05,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 89 flow [2021-03-26 00:49:05,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:49:05,430 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 100 flow [2021-03-26 00:49:05,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-26 00:49:05,432 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-26 00:49:05,432 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:05,432 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-26 00:49:05,432 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-26 00:49:05,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 100 flow [2021-03-26 00:49:05,445 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-26 00:49:05,445 INFO L130 PetriNetUnfolder]: For 25/33 co-relation queries the response was YES. [2021-03-26 00:49:05,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 214 events. 90/214 cut-off events. For 25/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1007 event pairs, 34 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 467. Up to 85 conditions per place. [2021-03-26 00:49:05,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-26 00:49:06,018 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-26 00:49:06,202 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-26 00:49:06,274 INFO L154 LiptonReduction]: Checked pairs total: 204 [2021-03-26 00:49:06,274 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:49:06,274 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 842 [2021-03-26 00:49:06,275 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2021-03-26 00:49:06,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,276 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:49:06,276 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,276 INFO L82 PathProgramCache]: Analyzing trace with hash -59456381, now seen corresponding path program 1 times [2021-03-26 00:49:06,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795209371] [2021-03-26 00:49:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:06,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:49:06,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:06,351 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:49:06,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:49:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:06,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795209371] [2021-03-26 00:49:06,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:06,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:49:06,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089493788] [2021-03-26 00:49:06,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:49:06,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:49:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:49:06,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-26 00:49:06,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:06,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-26 00:49:06,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:06,400 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-26 00:49:06,400 INFO L130 PetriNetUnfolder]: For 43/112 co-relation queries the response was YES. [2021-03-26 00:49:06,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 184 events. 75/184 cut-off events. For 43/112 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 831 event pairs, 8 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 548. Up to 78 conditions per place. [2021-03-26 00:49:06,403 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 12 selfloop transitions, 11 changer transitions 0/32 dead transitions. [2021-03-26 00:49:06,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 186 flow [2021-03-26 00:49:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:49:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:49:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-26 00:49:06,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-26 00:49:06,408 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:06,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,412 INFO L185 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 376 transitions. [2021-03-26 00:49:06,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 186 flow [2021-03-26 00:49:06,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:49:06,420 INFO L241 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2021-03-26 00:49:06,420 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2021-03-26 00:49:06,421 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-26 00:49:06,421 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:06,421 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 30 transitions, 164 flow [2021-03-26 00:49:06,421 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 30 transitions, 164 flow [2021-03-26 00:49:06,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 164 flow [2021-03-26 00:49:06,431 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-26 00:49:06,431 INFO L130 PetriNetUnfolder]: For 128/151 co-relation queries the response was YES. [2021-03-26 00:49:06,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 184 events. 75/184 cut-off events. For 128/151 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 886 event pairs, 15 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 511. Up to 78 conditions per place. [2021-03-26 00:49:06,433 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-26 00:49:06,440 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-26 00:49:06,440 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:06,440 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-26 00:49:06,442 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2021-03-26 00:49:06,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,442 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,442 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:49:06,442 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,443 INFO L82 PathProgramCache]: Analyzing trace with hash 893337386, now seen corresponding path program 1 times [2021-03-26 00:49:06,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281117148] [2021-03-26 00:49:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:06,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:06,495 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:49:06,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:49:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:06,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281117148] [2021-03-26 00:49:06,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:06,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:49:06,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426461913] [2021-03-26 00:49:06,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:49:06,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:06,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:49:06,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:49:06,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-26 00:49:06,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:06,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-26 00:49:06,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:06,538 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-26 00:49:06,538 INFO L130 PetriNetUnfolder]: For 151/240 co-relation queries the response was YES. [2021-03-26 00:49:06,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 164 events. 64/164 cut-off events. For 151/240 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 711 event pairs, 2 based on Foata normal form. 3/165 useless extension candidates. Maximal degree in co-relation 580. Up to 72 conditions per place. [2021-03-26 00:49:06,539 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 16 selfloop transitions, 16 changer transitions 0/41 dead transitions. [2021-03-26 00:49:06,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 302 flow [2021-03-26 00:49:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:49:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:49:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-26 00:49:06,541 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-26 00:49:06,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:06,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,543 INFO L185 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 4 states and 376 transitions. [2021-03-26 00:49:06,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 302 flow [2021-03-26 00:49:06,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 302 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 00:49:06,547 INFO L241 Difference]: Finished difference. Result has 38 places, 39 transitions, 306 flow [2021-03-26 00:49:06,547 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2021-03-26 00:49:06,547 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2021-03-26 00:49:06,547 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:06,547 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 39 transitions, 306 flow [2021-03-26 00:49:06,548 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 39 transitions, 306 flow [2021-03-26 00:49:06,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 39 transitions, 306 flow [2021-03-26 00:49:06,558 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-26 00:49:06,558 INFO L130 PetriNetUnfolder]: For 387/422 co-relation queries the response was YES. [2021-03-26 00:49:06,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 164 events. 64/164 cut-off events. For 387/422 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 723 event pairs, 4 based on Foata normal form. 2/164 useless extension candidates. Maximal degree in co-relation 617. Up to 72 conditions per place. [2021-03-26 00:49:06,559 INFO L142 LiptonReduction]: Number of co-enabled transitions 206 [2021-03-26 00:49:06,564 INFO L154 LiptonReduction]: Checked pairs total: 122 [2021-03-26 00:49:06,564 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:06,564 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-26 00:49:06,568 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 306 flow [2021-03-26 00:49:06,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,569 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,569 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:49:06,569 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1923654629, now seen corresponding path program 1 times [2021-03-26 00:49:06,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47746383] [2021-03-26 00:49:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:06,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:06,607 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:49:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:49:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:06,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47746383] [2021-03-26 00:49:06,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:06,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:49:06,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962268099] [2021-03-26 00:49:06,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:49:06,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:06,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:49:06,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:49:06,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-26 00:49:06,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:06,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-26 00:49:06,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:06,643 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-26 00:49:06,644 INFO L130 PetriNetUnfolder]: For 353/443 co-relation queries the response was YES. [2021-03-26 00:49:06,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 151 events. 57/151 cut-off events. For 353/443 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 641 event pairs, 2 based on Foata normal form. 12/162 useless extension candidates. Maximal degree in co-relation 683. Up to 67 conditions per place. [2021-03-26 00:49:06,645 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 18 selfloop transitions, 22 changer transitions 0/49 dead transitions. [2021-03-26 00:49:06,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 480 flow [2021-03-26 00:49:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:49:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:49:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-26 00:49:06,646 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-26 00:49:06,646 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:06,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-26 00:49:06,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,648 INFO L185 Difference]: Start difference. First operand has 38 places, 39 transitions, 306 flow. Second operand 4 states and 376 transitions. [2021-03-26 00:49:06,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 480 flow [2021-03-26 00:49:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 00:49:06,650 INFO L241 Difference]: Finished difference. Result has 44 places, 47 transitions, 484 flow [2021-03-26 00:49:06,650 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=484, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2021-03-26 00:49:06,651 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2021-03-26 00:49:06,651 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:06,651 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 47 transitions, 484 flow [2021-03-26 00:49:06,651 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 47 transitions, 484 flow [2021-03-26 00:49:06,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 484 flow [2021-03-26 00:49:06,659 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-26 00:49:06,659 INFO L130 PetriNetUnfolder]: For 811/892 co-relation queries the response was YES. [2021-03-26 00:49:06,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 151 events. 57/151 cut-off events. For 811/892 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 639 event pairs, 2 based on Foata normal form. 3/152 useless extension candidates. Maximal degree in co-relation 716. Up to 67 conditions per place. [2021-03-26 00:49:06,660 INFO L142 LiptonReduction]: Number of co-enabled transitions 234 [2021-03-26 00:49:06,664 INFO L154 LiptonReduction]: Checked pairs total: 198 [2021-03-26 00:49:06,664 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:06,665 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-26 00:49:06,665 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 484 flow [2021-03-26 00:49:06,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,666 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,666 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:49:06,666 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1926692910, now seen corresponding path program 1 times [2021-03-26 00:49:06,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519166205] [2021-03-26 00:49:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:06,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:49:06,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:06,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519166205] [2021-03-26 00:49:06,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:06,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:49:06,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384787781] [2021-03-26 00:49:06,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:49:06,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:06,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:49:06,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:49:06,695 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-26 00:49:06,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:06,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-26 00:49:06,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:06,712 INFO L129 PetriNetUnfolder]: 54/162 cut-off events. [2021-03-26 00:49:06,712 INFO L130 PetriNetUnfolder]: For 744/780 co-relation queries the response was YES. [2021-03-26 00:49:06,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 162 events. 54/162 cut-off events. For 744/780 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 749 event pairs, 1 based on Foata normal form. 5/165 useless extension candidates. Maximal degree in co-relation 792. Up to 74 conditions per place. [2021-03-26 00:49:06,713 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 5 selfloop transitions, 8 changer transitions 2/47 dead transitions. [2021-03-26 00:49:06,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 512 flow [2021-03-26 00:49:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:49:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:49:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2021-03-26 00:49:06,714 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8771929824561403 [2021-03-26 00:49:06,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2021-03-26 00:49:06,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2021-03-26 00:49:06,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:06,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2021-03-26 00:49:06,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,716 INFO L185 Difference]: Start difference. First operand has 44 places, 47 transitions, 484 flow. Second operand 3 states and 300 transitions. [2021-03-26 00:49:06,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 512 flow [2021-03-26 00:49:06,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 00:49:06,719 INFO L241 Difference]: Finished difference. Result has 47 places, 45 transitions, 488 flow [2021-03-26 00:49:06,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2021-03-26 00:49:06,719 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2021-03-26 00:49:06,720 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:06,720 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 45 transitions, 488 flow [2021-03-26 00:49:06,720 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 45 transitions, 488 flow [2021-03-26 00:49:06,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 45 transitions, 488 flow [2021-03-26 00:49:06,730 INFO L129 PetriNetUnfolder]: 51/156 cut-off events. [2021-03-26 00:49:06,730 INFO L130 PetriNetUnfolder]: For 939/1021 co-relation queries the response was YES. [2021-03-26 00:49:06,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 156 events. 51/156 cut-off events. For 939/1021 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 725 event pairs, 2 based on Foata normal form. 3/157 useless extension candidates. Maximal degree in co-relation 752. Up to 70 conditions per place. [2021-03-26 00:49:06,731 INFO L142 LiptonReduction]: Number of co-enabled transitions 220 [2021-03-26 00:49:06,735 INFO L154 LiptonReduction]: Checked pairs total: 140 [2021-03-26 00:49:06,735 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:06,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-26 00:49:06,737 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 488 flow [2021-03-26 00:49:06,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,737 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,738 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:49:06,738 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,738 INFO L82 PathProgramCache]: Analyzing trace with hash -496338331, now seen corresponding path program 1 times [2021-03-26 00:49:06,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235759607] [2021-03-26 00:49:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:06,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:06,786 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:49:06,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:49:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:06,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235759607] [2021-03-26 00:49:06,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:06,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:49:06,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867891925] [2021-03-26 00:49:06,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:49:06,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:06,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:49:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:49:06,795 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-26 00:49:06,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:06,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-26 00:49:06,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:06,838 INFO L129 PetriNetUnfolder]: 125/328 cut-off events. [2021-03-26 00:49:06,838 INFO L130 PetriNetUnfolder]: For 1383/1465 co-relation queries the response was YES. [2021-03-26 00:49:06,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 328 events. 125/328 cut-off events. For 1383/1465 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2047 event pairs, 28 based on Foata normal form. 35/344 useless extension candidates. Maximal degree in co-relation 1178. Up to 164 conditions per place. [2021-03-26 00:49:06,839 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2021-03-26 00:49:06,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 540 flow [2021-03-26 00:49:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:49:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:49:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-26 00:49:06,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7771929824561403 [2021-03-26 00:49:06,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-26 00:49:06,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-26 00:49:06,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:06,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-26 00:49:06,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,843 INFO L185 Difference]: Start difference. First operand has 47 places, 45 transitions, 488 flow. Second operand 5 states and 443 transitions. [2021-03-26 00:49:06,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 540 flow [2021-03-26 00:49:06,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 530 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-26 00:49:06,846 INFO L241 Difference]: Finished difference. Result has 53 places, 52 transitions, 538 flow [2021-03-26 00:49:06,846 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=538, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2021-03-26 00:49:06,847 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2021-03-26 00:49:06,847 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:06,847 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 52 transitions, 538 flow [2021-03-26 00:49:06,847 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 52 transitions, 538 flow [2021-03-26 00:49:06,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 52 transitions, 538 flow [2021-03-26 00:49:06,866 INFO L129 PetriNetUnfolder]: 124/326 cut-off events. [2021-03-26 00:49:06,866 INFO L130 PetriNetUnfolder]: For 1263/1372 co-relation queries the response was YES. [2021-03-26 00:49:06,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 326 events. 124/326 cut-off events. For 1263/1372 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2058 event pairs, 27 based on Foata normal form. 19/321 useless extension candidates. Maximal degree in co-relation 1342. Up to 182 conditions per place. [2021-03-26 00:49:06,869 INFO L142 LiptonReduction]: Number of co-enabled transitions 368 [2021-03-26 00:49:06,876 INFO L154 LiptonReduction]: Checked pairs total: 34 [2021-03-26 00:49:06,876 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:49:06,876 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 00:49:06,877 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 532 flow [2021-03-26 00:49:06,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:49:06,878 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1361662799, now seen corresponding path program 1 times [2021-03-26 00:49:06,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578991312] [2021-03-26 00:49:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:06,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:49:06,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:06,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:06,907 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:49:06,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:49:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:06,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578991312] [2021-03-26 00:49:06,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:06,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:49:06,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142100475] [2021-03-26 00:49:06,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:49:06,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:06,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:49:06,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:49:06,914 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-26 00:49:06,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:06,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-26 00:49:06,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:06,952 INFO L129 PetriNetUnfolder]: 135/341 cut-off events. [2021-03-26 00:49:06,952 INFO L130 PetriNetUnfolder]: For 1404/1498 co-relation queries the response was YES. [2021-03-26 00:49:06,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 341 events. 135/341 cut-off events. For 1404/1498 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2027 event pairs, 40 based on Foata normal form. 24/344 useless extension candidates. Maximal degree in co-relation 1507. Up to 216 conditions per place. [2021-03-26 00:49:06,954 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 24 changer transitions 3/53 dead transitions. [2021-03-26 00:49:06,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 660 flow [2021-03-26 00:49:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:49:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:49:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-26 00:49:06,955 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-26 00:49:06,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-26 00:49:06,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-26 00:49:06,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:06,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-26 00:49:06,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,957 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 532 flow. Second operand 4 states and 375 transitions. [2021-03-26 00:49:06,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 660 flow [2021-03-26 00:49:06,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 654 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-26 00:49:06,963 INFO L241 Difference]: Finished difference. Result has 55 places, 48 transitions, 622 flow [2021-03-26 00:49:06,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=622, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2021-03-26 00:49:06,963 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2021-03-26 00:49:06,964 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:06,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 48 transitions, 622 flow [2021-03-26 00:49:06,964 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 48 transitions, 622 flow [2021-03-26 00:49:06,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 48 transitions, 622 flow [2021-03-26 00:49:06,985 INFO L129 PetriNetUnfolder]: 131/333 cut-off events. [2021-03-26 00:49:06,985 INFO L130 PetriNetUnfolder]: For 1551/1609 co-relation queries the response was YES. [2021-03-26 00:49:06,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 333 events. 131/333 cut-off events. For 1551/1609 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1979 event pairs, 42 based on Foata normal form. 4/318 useless extension candidates. Maximal degree in co-relation 1452. Up to 213 conditions per place. [2021-03-26 00:49:06,988 INFO L142 LiptonReduction]: Number of co-enabled transitions 246 [2021-03-26 00:49:06,991 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:49:06,991 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:06,991 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 00:49:06,995 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 622 flow [2021-03-26 00:49:06,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:06,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:06,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:06,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:49:06,996 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:06,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1137926189, now seen corresponding path program 1 times [2021-03-26 00:49:06,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:06,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487659573] [2021-03-26 00:49:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:07,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:49:07,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:07,028 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:49:07,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:49:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:07,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487659573] [2021-03-26 00:49:07,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:07,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:49:07,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105881336] [2021-03-26 00:49:07,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:49:07,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:07,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:49:07,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:49:07,038 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-26 00:49:07,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:07,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-26 00:49:07,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:07,074 INFO L129 PetriNetUnfolder]: 168/415 cut-off events. [2021-03-26 00:49:07,074 INFO L130 PetriNetUnfolder]: For 1852/1986 co-relation queries the response was YES. [2021-03-26 00:49:07,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 415 events. 168/415 cut-off events. For 1852/1986 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 2643 event pairs, 60 based on Foata normal form. 28/409 useless extension candidates. Maximal degree in co-relation 1790. Up to 295 conditions per place. [2021-03-26 00:49:07,076 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 11 selfloop transitions, 23 changer transitions 7/53 dead transitions. [2021-03-26 00:49:07,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 786 flow [2021-03-26 00:49:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:49:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:49:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-26 00:49:07,077 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-26 00:49:07,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-26 00:49:07,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-26 00:49:07,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:07,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-26 00:49:07,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,080 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,080 INFO L185 Difference]: Start difference. First operand has 55 places, 48 transitions, 622 flow. Second operand 4 states and 375 transitions. [2021-03-26 00:49:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 786 flow [2021-03-26 00:49:07,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 784 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-26 00:49:07,085 INFO L241 Difference]: Finished difference. Result has 59 places, 44 transitions, 609 flow [2021-03-26 00:49:07,086 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2021-03-26 00:49:07,086 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2021-03-26 00:49:07,086 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:07,086 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 44 transitions, 609 flow [2021-03-26 00:49:07,086 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 44 transitions, 609 flow [2021-03-26 00:49:07,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 44 transitions, 609 flow [2021-03-26 00:49:07,118 INFO L129 PetriNetUnfolder]: 161/403 cut-off events. [2021-03-26 00:49:07,118 INFO L130 PetriNetUnfolder]: For 2024/2170 co-relation queries the response was YES. [2021-03-26 00:49:07,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 403 events. 161/403 cut-off events. For 2024/2170 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2560 event pairs, 62 based on Foata normal form. 5/381 useless extension candidates. Maximal degree in co-relation 1653. Up to 293 conditions per place. [2021-03-26 00:49:07,121 INFO L142 LiptonReduction]: Number of co-enabled transitions 218 [2021-03-26 00:49:07,123 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:49:07,123 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:07,124 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 00:49:07,124 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 609 flow [2021-03-26 00:49:07,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:07,124 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:07,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:49:07,125 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:07,125 INFO L82 PathProgramCache]: Analyzing trace with hash 725328041, now seen corresponding path program 1 times [2021-03-26 00:49:07,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:07,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317075406] [2021-03-26 00:49:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:07,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:07,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:07,175 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:49:07,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:49:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:07,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317075406] [2021-03-26 00:49:07,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:07,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:49:07,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801776282] [2021-03-26 00:49:07,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:49:07,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:49:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:49:07,181 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-26 00:49:07,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 609 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:07,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-26 00:49:07,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:07,229 INFO L129 PetriNetUnfolder]: 128/364 cut-off events. [2021-03-26 00:49:07,229 INFO L130 PetriNetUnfolder]: For 1681/1984 co-relation queries the response was YES. [2021-03-26 00:49:07,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 364 events. 128/364 cut-off events. For 1681/1984 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2461 event pairs, 10 based on Foata normal form. 88/439 useless extension candidates. Maximal degree in co-relation 1657. Up to 281 conditions per place. [2021-03-26 00:49:07,230 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 7 changer transitions 19/54 dead transitions. [2021-03-26 00:49:07,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 705 flow [2021-03-26 00:49:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:49:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:49:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2021-03-26 00:49:07,232 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7763157894736842 [2021-03-26 00:49:07,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2021-03-26 00:49:07,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2021-03-26 00:49:07,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:07,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2021-03-26 00:49:07,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,234 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,234 INFO L185 Difference]: Start difference. First operand has 59 places, 44 transitions, 609 flow. Second operand 6 states and 531 transitions. [2021-03-26 00:49:07,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 705 flow [2021-03-26 00:49:07,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 664 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-26 00:49:07,239 INFO L241 Difference]: Finished difference. Result has 65 places, 35 transitions, 498 flow [2021-03-26 00:49:07,239 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=6, PETRI_FLOW=498, PETRI_PLACES=65, PETRI_TRANSITIONS=35} [2021-03-26 00:49:07,239 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2021-03-26 00:49:07,239 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:07,240 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 35 transitions, 498 flow [2021-03-26 00:49:07,240 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 35 transitions, 498 flow [2021-03-26 00:49:07,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 35 transitions, 498 flow [2021-03-26 00:49:07,245 INFO L129 PetriNetUnfolder]: 24/90 cut-off events. [2021-03-26 00:49:07,245 INFO L130 PetriNetUnfolder]: For 615/711 co-relation queries the response was YES. [2021-03-26 00:49:07,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 90 events. 24/90 cut-off events. For 615/711 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 334 event pairs, 3 based on Foata normal form. 5/92 useless extension candidates. Maximal degree in co-relation 505. Up to 61 conditions per place. [2021-03-26 00:49:07,246 INFO L142 LiptonReduction]: Number of co-enabled transitions 124 [2021-03-26 00:49:07,304 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-26 00:49:07,304 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:49:07,304 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-26 00:49:07,305 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 34 transitions, 496 flow [2021-03-26 00:49:07,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,305 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:49:07,305 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:49:07,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 00:49:07,305 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:49:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:49:07,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1095176418, now seen corresponding path program 1 times [2021-03-26 00:49:07,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:49:07,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738336744] [2021-03-26 00:49:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:49:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:49:07,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:07,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:07,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:49:07,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:49:07,343 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:49:07,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:49:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:49:07,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738336744] [2021-03-26 00:49:07,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:49:07,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:49:07,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471574105] [2021-03-26 00:49:07,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 00:49:07,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:49:07,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 00:49:07,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 00:49:07,350 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-03-26 00:49:07,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 34 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:49:07,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-03-26 00:49:07,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:49:07,370 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2021-03-26 00:49:07,370 INFO L130 PetriNetUnfolder]: For 624/761 co-relation queries the response was YES. [2021-03-26 00:49:07,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 60 events. 15/60 cut-off events. For 624/761 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 186 event pairs, 0 based on Foata normal form. 39/96 useless extension candidates. Maximal degree in co-relation 397. Up to 37 conditions per place. [2021-03-26 00:49:07,371 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2021-03-26 00:49:07,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 33 transitions, 490 flow [2021-03-26 00:49:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:49:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:49:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2021-03-26 00:49:07,372 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582608695652174 [2021-03-26 00:49:07,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2021-03-26 00:49:07,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2021-03-26 00:49:07,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:49:07,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2021-03-26 00:49:07,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,374 INFO L185 Difference]: Start difference. First operand has 62 places, 34 transitions, 496 flow. Second operand 5 states and 436 transitions. [2021-03-26 00:49:07,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 33 transitions, 490 flow [2021-03-26 00:49:07,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 33 transitions, 355 flow, removed 12 selfloop flow, removed 14 redundant places. [2021-03-26 00:49:07,376 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-03-26 00:49:07,377 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-03-26 00:49:07,377 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2021-03-26 00:49:07,377 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:49:07,377 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 0 transitions, 0 flow [2021-03-26 00:49:07,377 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 0 transitions, 0 flow [2021-03-26 00:49:07,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:49:07,377 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:49:07,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:49:07,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 00:49:07,378 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:49:07,378 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:49:07,378 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:49:07,378 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:49:07,378 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:49:07,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:49:07,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 00:49:07,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:49:07 BasicIcfg [2021-03-26 00:49:07,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:49:07,382 INFO L168 Benchmark]: Toolchain (without parser) took 4496.24 ms. Allocated memory was 255.9 MB in the beginning and 463.5 MB in the end (delta: 207.6 MB). Free memory was 234.6 MB in the beginning and 351.4 MB in the end (delta: -116.7 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:49:07,382 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:49:07,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.92 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.6 MB in the beginning and 348.8 MB in the end (delta: -114.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:49:07,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.44 ms. Allocated memory is still 385.9 MB. Free memory was 348.2 MB in the beginning and 346.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:49:07,382 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 385.9 MB. Free memory was 346.7 MB in the beginning and 345.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:49:07,383 INFO L168 Benchmark]: RCFGBuilder took 373.95 ms. Allocated memory is still 385.9 MB. Free memory was 345.4 MB in the beginning and 323.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 00:49:07,383 INFO L168 Benchmark]: TraceAbstraction took 3709.21 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 323.0 MB in the beginning and 351.4 MB in the end (delta: -28.4 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.0 GB. [2021-03-26 00:49:07,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 339.92 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.6 MB in the beginning and 348.8 MB in the end (delta: -114.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.44 ms. Allocated memory is still 385.9 MB. Free memory was 348.2 MB in the beginning and 346.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 385.9 MB. Free memory was 346.7 MB in the beginning and 345.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 373.95 ms. Allocated memory is still 385.9 MB. Free memory was 345.4 MB in the beginning and 323.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3709.21 ms. Allocated memory was 385.9 MB in the beginning and 463.5 MB in the end (delta: 77.6 MB). Free memory was 323.0 MB in the beginning and 351.4 MB in the end (delta: -28.4 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1344.8ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 760, positive: 718, positive conditional: 718, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 628, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 628, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 628, positive: 586, positive conditional: 0, positive unconditional: 586, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 189, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 141, negative conditional: 0, negative unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 760, positive: 120, positive conditional: 120, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 628, unknown conditional: 628, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 32, Positive conditional cache size: 32, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 841.4ms, 31 PlacesBefore, 28 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 204 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 170, positive: 157, positive conditional: 157, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 72, positive: 68, positive conditional: 10, positive unconditional: 58, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 72, positive: 68, positive conditional: 10, positive unconditional: 58, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 72, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 51, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 170, positive: 89, positive conditional: 89, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 72, unknown conditional: 72, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 82, Positive conditional cache size: 82, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.8ms, 32 PlacesBefore, 32 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 75, positive conditional: 75, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 8, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 8, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 80, positive: 58, positive conditional: 58, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 99, Positive conditional cache size: 99, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.2ms, 38 PlacesBefore, 38 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 206 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 122 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 122, positive: 115, positive conditional: 115, 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: 18, positive: 18, positive conditional: 9, positive unconditional: 9, 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: 18, positive: 18, positive conditional: 9, positive unconditional: 9, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 122, positive: 97, positive conditional: 97, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 126, Positive cache size: 117, Positive conditional cache size: 117, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.5ms, 44 PlacesBefore, 44 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 198, positive: 187, positive conditional: 187, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 30, positive: 30, positive conditional: 17, positive unconditional: 13, 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: 30, positive: 30, positive conditional: 17, positive unconditional: 13, 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: 30, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 198, positive: 157, positive conditional: 157, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 30, unknown conditional: 30, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 147, Positive conditional cache size: 147, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.7ms, 47 PlacesBefore, 47 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 140 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 140, positive: 132, positive conditional: 132, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 6, positive unconditional: 7, 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: 13, positive: 13, positive conditional: 6, positive unconditional: 7, 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: 13, positive: 13, positive conditional: 0, positive unconditional: 13, 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: 140, positive: 119, positive conditional: 119, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 169, Positive cache size: 160, Positive conditional cache size: 160, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.2ms, 53 PlacesBefore, 53 PlacesAfterwards, 52 TransitionsBefore, 51 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 34, positive conditional: 34, 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: 34, positive: 34, positive conditional: 34, 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: 34, positive: 34, positive conditional: 34, 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: 34, positive: 34, positive conditional: 0, positive unconditional: 34, 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: 34, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 34, unknown conditional: 34, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 151, Positive conditional cache size: 151, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.1ms, 55 PlacesBefore, 55 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 246 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): 157, Positive cache size: 151, Positive conditional cache size: 151, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.3ms, 59 PlacesBefore, 59 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 218 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): 157, Positive cache size: 151, Positive conditional cache size: 151, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.2ms, 65 PlacesBefore, 62 PlacesAfterwards, 35 TransitionsBefore, 34 TransitionsAfterwards, 124 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 3, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 3, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 141, Positive cache size: 136, Positive conditional cache size: 136, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 51 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): 141, Positive cache size: 136, Positive conditional cache size: 136, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3625.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 475.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1413.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 80 SDtfs, 23 SDslu, 40 SDs, 0 SdLazy, 114 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 87.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=622occurred in iteration=7, InterpolantAutomatonStates: 42, 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: 15.6ms SsaConstructionTime, 133.8ms SatisfiabilityAnalysisTime, 366.6ms InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...