/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:12:01,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:12:01,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:12:01,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:12:01,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:12:01,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:12:01,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:12:01,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:12:01,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:12:01,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:12:01,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:12:01,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:12:01,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:12:01,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:12:01,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:12:01,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:12:01,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:12:01,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:12:01,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:12:01,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:12:01,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:12:01,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:12:01,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:12:01,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:12:01,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:12:01,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:12:01,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:12:01,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:12:01,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:12:01,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:12:01,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:12:01,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:12:01,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:12:01,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:12:01,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:12:01,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:12:01,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:12:01,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:12:01,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:12:01,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:12:01,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:12:01,715 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-RepeatedVariableLbe.epf [2021-03-25 05:12:01,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:12:01,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:12:01,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:12:01,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:12:01,739 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:12:01,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:12:01,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:12:01,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:12:01,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:12:01,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:12:01,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:12:01,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:12:01,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:12:01,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:12:01,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:12:01,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:12:01,742 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:12:01,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:12:02,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:12:02,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:12:02,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:12:02,028 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:12:02,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2021-03-25 05:12:02,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817425ec6/01ec61c1492a4a7fae21d1e1a1b052d1/FLAGe4fc72796 [2021-03-25 05:12:02,530 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:12:02,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2021-03-25 05:12:02,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817425ec6/01ec61c1492a4a7fae21d1e1a1b052d1/FLAGe4fc72796 [2021-03-25 05:12:02,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817425ec6/01ec61c1492a4a7fae21d1e1a1b052d1 [2021-03-25 05:12:02,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:12:02,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:12:02,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:12:02,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:12:02,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:12:02,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:12:02" (1/1) ... [2021-03-25 05:12:02,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50912afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:02, skipping insertion in model container [2021-03-25 05:12:02,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:12:02" (1/1) ... [2021-03-25 05:12:02,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:12:02,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:12:03,068 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/safe035_rmo.oepc.i[950,963] [2021-03-25 05:12:03,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:12:03,293 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:12:03,302 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/safe035_rmo.oepc.i[950,963] [2021-03-25 05:12:03,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:12:03,387 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:12:03,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03 WrapperNode [2021-03-25 05:12:03,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:12:03,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:12:03,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:12:03,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:12:03,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:12:03,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:12:03,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:12:03,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:12:03,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (1/1) ... [2021-03-25 05:12:03,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:12:03,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:12:03,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:12:03,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:12:03,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (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 [2021-03-25 05:12:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:12:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:12:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:12:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:12:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:12:03,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:12:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:12:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:12:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:12:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:12:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:12:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:12:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:12:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:12:03,552 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:12:03,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:12:03,879 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:12:03,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:12:03 BoogieIcfgContainer [2021-03-25 05:12:03,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:12:03,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:12:03,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:12:03,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:12:03,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:12:02" (1/3) ... [2021-03-25 05:12:03,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a0d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:12:03, skipping insertion in model container [2021-03-25 05:12:03,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:03" (2/3) ... [2021-03-25 05:12:03,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a0d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:12:03, skipping insertion in model container [2021-03-25 05:12:03,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:12:03" (3/3) ... [2021-03-25 05:12:03,886 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2021-03-25 05:12:03,892 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:12:03,895 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:12:03,896 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:12:03,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,922 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,927 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,927 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,930 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,930 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,934 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,934 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,934 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:03,936 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:12:03,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:12:03,973 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:12:03,973 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:12:03,973 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:12:03,973 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:12:03,973 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:12:03,973 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:12:03,973 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:12:03,973 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:12:03,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:12:04,019 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:12:04,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:04,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:12:04,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:12:04,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:04,035 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:04,043 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:04,045 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:04,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:04,064 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:12:04,065 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:04,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:12:04,067 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:12:05,239 INFO L154 LiptonReduction]: Checked pairs total: 1134 [2021-03-25 05:12:05,240 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 05:12:05,241 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1207 [2021-03-25 05:12:05,248 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 05:12:05,248 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:05,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:05,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:05,248 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:05,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2024649040, now seen corresponding path program 1 times [2021-03-25 05:12:05,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:05,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157686274] [2021-03-25 05:12:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:05,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:05,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:05,401 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:05,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157686274] [2021-03-25 05:12:05,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:05,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:12:05,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857008452] [2021-03-25 05:12:05,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:05,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:05,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:05,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:05,426 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-25 05:12:05,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:05,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:05,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-25 05:12:05,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:05,450 INFO L129 PetriNetUnfolder]: 19/76 cut-off events. [2021-03-25 05:12:05,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:05,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 76 events. 19/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 9 based on Foata normal form. 8/80 useless extension candidates. Maximal degree in co-relation 121. Up to 22 conditions per place. [2021-03-25 05:12:05,452 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 5 changer transitions 1/27 dead transitions. [2021-03-25 05:12:05,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 89 flow [2021-03-25 05:12:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-25 05:12:05,461 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8030973451327433 [2021-03-25 05:12:05,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-25 05:12:05,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-25 05:12:05,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:05,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-25 05:12:05,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:05,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:05,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:05,472 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 363 transitions. [2021-03-25 05:12:05,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 89 flow [2021-03-25 05:12:05,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:12:05,475 INFO L241 Difference]: Finished difference. Result has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:05,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2021-03-25 05:12:05,477 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-25 05:12:05,477 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:05,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:05,477 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:05,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:05,482 INFO L129 PetriNetUnfolder]: 6/49 cut-off events. [2021-03-25 05:12:05,483 INFO L130 PetriNetUnfolder]: For 13/16 co-relation queries the response was YES. [2021-03-25 05:12:05,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 49 events. 6/49 cut-off events. For 13/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 130 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 89. Up to 17 conditions per place. [2021-03-25 05:12:05,483 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-25 05:12:05,892 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:12:06,058 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:12:06,116 INFO L154 LiptonReduction]: Checked pairs total: 333 [2021-03-25 05:12:06,116 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:12:06,116 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 639 [2021-03-25 05:12:06,117 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 76 flow [2021-03-25 05:12:06,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,117 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:06,117 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:06,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:12:06,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:06,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:06,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2094090085, now seen corresponding path program 1 times [2021-03-25 05:12:06,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:06,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021626773] [2021-03-25 05:12:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:06,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,210 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-25 05:12:06,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 05:12:06,229 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:12:06,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:12:06,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:06,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021626773] [2021-03-25 05:12:06,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:06,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:06,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185623406] [2021-03-25 05:12:06,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:06,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:06,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:06,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2021-03-25 05:12:06,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:06,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2021-03-25 05:12:06,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:06,287 INFO L129 PetriNetUnfolder]: 59/141 cut-off events. [2021-03-25 05:12:06,287 INFO L130 PetriNetUnfolder]: For 25/35 co-relation queries the response was YES. [2021-03-25 05:12:06,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 141 events. 59/141 cut-off events. For 25/35 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 628 event pairs, 2 based on Foata normal form. 3/129 useless extension candidates. Maximal degree in co-relation 305. Up to 57 conditions per place. [2021-03-25 05:12:06,290 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 6 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-25 05:12:06,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 110 flow [2021-03-25 05:12:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2021-03-25 05:12:06,294 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7372881355932204 [2021-03-25 05:12:06,294 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2021-03-25 05:12:06,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2021-03-25 05:12:06,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:06,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2021-03-25 05:12:06,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,298 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,299 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 76 flow. Second operand 4 states and 348 transitions. [2021-03-25 05:12:06,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 110 flow [2021-03-25 05:12:06,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:12:06,300 INFO L241 Difference]: Finished difference. Result has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:06,301 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2021-03-25 05:12:06,301 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-25 05:12:06,301 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:06,301 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:06,302 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:06,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:06,319 INFO L129 PetriNetUnfolder]: 30/97 cut-off events. [2021-03-25 05:12:06,320 INFO L130 PetriNetUnfolder]: For 16/26 co-relation queries the response was YES. [2021-03-25 05:12:06,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 97 events. 30/97 cut-off events. For 16/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 408 event pairs, 6 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 219. Up to 51 conditions per place. [2021-03-25 05:12:06,321 INFO L142 LiptonReduction]: Number of co-enabled transitions 166 [2021-03-25 05:12:06,323 INFO L154 LiptonReduction]: Checked pairs total: 37 [2021-03-25 05:12:06,323 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:06,323 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 05:12:06,323 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:06,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,324 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:06,324 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:06,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:12:06,324 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:06,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:06,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1551385883, now seen corresponding path program 1 times [2021-03-25 05:12:06,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:06,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33297648] [2021-03-25 05:12:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:06,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:06,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33297648] [2021-03-25 05:12:06,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:06,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:06,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267229534] [2021-03-25 05:12:06,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:06,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:06,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:06,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:06,407 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 118 [2021-03-25 05:12:06,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:06,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 118 [2021-03-25 05:12:06,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:06,428 INFO L129 PetriNetUnfolder]: 31/89 cut-off events. [2021-03-25 05:12:06,428 INFO L130 PetriNetUnfolder]: For 53/95 co-relation queries the response was YES. [2021-03-25 05:12:06,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 89 events. 31/89 cut-off events. For 53/95 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 301 event pairs, 2 based on Foata normal form. 29/111 useless extension candidates. Maximal degree in co-relation 256. Up to 51 conditions per place. [2021-03-25 05:12:06,430 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-03-25 05:12:06,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 134 flow [2021-03-25 05:12:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2021-03-25 05:12:06,431 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8389830508474576 [2021-03-25 05:12:06,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2021-03-25 05:12:06,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2021-03-25 05:12:06,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:06,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2021-03-25 05:12:06,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,433 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,434 INFO L185 Difference]: Start difference. First operand has 33 places, 23 transitions, 100 flow. Second operand 4 states and 396 transitions. [2021-03-25 05:12:06,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 134 flow [2021-03-25 05:12:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:12:06,435 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:06,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-25 05:12:06,435 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-25 05:12:06,436 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:06,436 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:06,436 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:06,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:06,443 INFO L129 PetriNetUnfolder]: 31/90 cut-off events. [2021-03-25 05:12:06,443 INFO L130 PetriNetUnfolder]: For 70/100 co-relation queries the response was YES. [2021-03-25 05:12:06,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 90 events. 31/90 cut-off events. For 70/100 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 2 based on Foata normal form. 7/90 useless extension candidates. Maximal degree in co-relation 270. Up to 51 conditions per place. [2021-03-25 05:12:06,444 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 05:12:06,446 INFO L154 LiptonReduction]: Checked pairs total: 37 [2021-03-25 05:12:06,446 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:06,447 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:12:06,451 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:06,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,452 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:06,452 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:06,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:12:06,452 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:06,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2099435587, now seen corresponding path program 1 times [2021-03-25 05:12:06,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:06,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212757321] [2021-03-25 05:12:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:06,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:06,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,522 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:06,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:06,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212757321] [2021-03-25 05:12:06,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:06,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:06,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490224746] [2021-03-25 05:12:06,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:06,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:06,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:06,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:06,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 118 [2021-03-25 05:12:06,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 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) [2021-03-25 05:12:06,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:06,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 118 [2021-03-25 05:12:06,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:06,598 INFO L129 PetriNetUnfolder]: 81/230 cut-off events. [2021-03-25 05:12:06,598 INFO L130 PetriNetUnfolder]: For 244/307 co-relation queries the response was YES. [2021-03-25 05:12:06,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 230 events. 81/230 cut-off events. For 244/307 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1273 event pairs, 8 based on Foata normal form. 30/251 useless extension candidates. Maximal degree in co-relation 755. Up to 122 conditions per place. [2021-03-25 05:12:06,599 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 5 selfloop transitions, 11 changer transitions 9/41 dead transitions. [2021-03-25 05:12:06,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 257 flow [2021-03-25 05:12:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:12:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:12:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 560 transitions. [2021-03-25 05:12:06,601 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7909604519774012 [2021-03-25 05:12:06,601 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 560 transitions. [2021-03-25 05:12:06,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 560 transitions. [2021-03-25 05:12:06,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:06,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 560 transitions. [2021-03-25 05:12:06,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,604 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 138 flow. Second operand 6 states and 560 transitions. [2021-03-25 05:12:06,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 257 flow [2021-03-25 05:12:06,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 243 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 05:12:06,608 INFO L241 Difference]: Finished difference. Result has 44 places, 32 transitions, 214 flow [2021-03-25 05:12:06,608 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2021-03-25 05:12:06,608 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-25 05:12:06,608 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:06,608 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 32 transitions, 214 flow [2021-03-25 05:12:06,608 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 32 transitions, 214 flow [2021-03-25 05:12:06,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 32 transitions, 214 flow [2021-03-25 05:12:06,632 INFO L129 PetriNetUnfolder]: 53/165 cut-off events. [2021-03-25 05:12:06,632 INFO L130 PetriNetUnfolder]: For 224/253 co-relation queries the response was YES. [2021-03-25 05:12:06,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 165 events. 53/165 cut-off events. For 224/253 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 831 event pairs, 8 based on Foata normal form. 14/170 useless extension candidates. Maximal degree in co-relation 524. Up to 84 conditions per place. [2021-03-25 05:12:06,633 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-25 05:12:06,656 INFO L154 LiptonReduction]: Checked pairs total: 70 [2021-03-25 05:12:06,656 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:12:06,656 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-25 05:12:06,657 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 221 flow [2021-03-25 05:12:06,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 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) [2021-03-25 05:12:06,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:06,657 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:06,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:12:06,657 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:06,658 INFO L82 PathProgramCache]: Analyzing trace with hash 480755879, now seen corresponding path program 2 times [2021-03-25 05:12:06,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:06,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283207242] [2021-03-25 05:12:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:06,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:06,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283207242] [2021-03-25 05:12:06,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:06,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:06,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243718593] [2021-03-25 05:12:06,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:06,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:06,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:06,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:06,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 119 [2021-03-25 05:12:06,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:06,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 119 [2021-03-25 05:12:06,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:06,752 INFO L129 PetriNetUnfolder]: 36/123 cut-off events. [2021-03-25 05:12:06,752 INFO L130 PetriNetUnfolder]: For 238/346 co-relation queries the response was YES. [2021-03-25 05:12:06,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 123 events. 36/123 cut-off events. For 238/346 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 584 event pairs, 3 based on Foata normal form. 80/195 useless extension candidates. Maximal degree in co-relation 480. Up to 53 conditions per place. [2021-03-25 05:12:06,753 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 1 selfloop transitions, 10 changer transitions 1/32 dead transitions. [2021-03-25 05:12:06,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 32 transitions, 243 flow [2021-03-25 05:12:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:12:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:12:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2021-03-25 05:12:06,755 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2021-03-25 05:12:06,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2021-03-25 05:12:06,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2021-03-25 05:12:06,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:06,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2021-03-25 05:12:06,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,757 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 221 flow. Second operand 5 states and 497 transitions. [2021-03-25 05:12:06,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 32 transitions, 243 flow [2021-03-25 05:12:06,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 32 transitions, 228 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 05:12:06,761 INFO L241 Difference]: Finished difference. Result has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:06,761 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2021-03-25 05:12:06,761 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-25 05:12:06,761 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:06,761 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:06,762 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:06,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:06,774 INFO L129 PetriNetUnfolder]: 35/122 cut-off events. [2021-03-25 05:12:06,774 INFO L130 PetriNetUnfolder]: For 242/263 co-relation queries the response was YES. [2021-03-25 05:12:06,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 122 events. 35/122 cut-off events. For 242/263 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 568 event pairs, 3 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 467. Up to 53 conditions per place. [2021-03-25 05:12:06,775 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 05:12:06,841 INFO L154 LiptonReduction]: Checked pairs total: 52 [2021-03-25 05:12:06,841 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:12:06,841 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 80 [2021-03-25 05:12:06,843 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 229 flow [2021-03-25 05:12:06,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,843 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:06,843 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:06,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:12:06,844 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:06,844 INFO L82 PathProgramCache]: Analyzing trace with hash -932086075, now seen corresponding path program 1 times [2021-03-25 05:12:06,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:06,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122931086] [2021-03-25 05:12:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:06,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:06,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,886 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:06,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:06,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122931086] [2021-03-25 05:12:06,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:06,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:06,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204393497] [2021-03-25 05:12:06,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:06,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:06,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:06,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-03-25 05:12:06,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:06,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-03-25 05:12:06,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:06,918 INFO L129 PetriNetUnfolder]: 35/123 cut-off events. [2021-03-25 05:12:06,919 INFO L130 PetriNetUnfolder]: For 435/490 co-relation queries the response was YES. [2021-03-25 05:12:06,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 123 events. 35/123 cut-off events. For 435/490 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 575 event pairs, 0 based on Foata normal form. 21/138 useless extension candidates. Maximal degree in co-relation 515. Up to 54 conditions per place. [2021-03-25 05:12:06,919 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 5 selfloop transitions, 5 changer transitions 7/32 dead transitions. [2021-03-25 05:12:06,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 271 flow [2021-03-25 05:12:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:12:06,921 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-03-25 05:12:06,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:12:06,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:12:06,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:06,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:12:06,922 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) [2021-03-25 05:12:06,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,923 INFO L185 Difference]: Start difference. First operand has 46 places, 31 transitions, 229 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:12:06,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 271 flow [2021-03-25 05:12:06,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 239 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-25 05:12:06,925 INFO L241 Difference]: Finished difference. Result has 44 places, 24 transitions, 155 flow [2021-03-25 05:12:06,925 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2021-03-25 05:12:06,925 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-25 05:12:06,925 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:06,925 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 24 transitions, 155 flow [2021-03-25 05:12:06,925 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 24 transitions, 155 flow [2021-03-25 05:12:06,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 24 transitions, 155 flow [2021-03-25 05:12:06,928 INFO L129 PetriNetUnfolder]: 13/47 cut-off events. [2021-03-25 05:12:06,929 INFO L130 PetriNetUnfolder]: For 93/102 co-relation queries the response was YES. [2021-03-25 05:12:06,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 47 events. 13/47 cut-off events. For 93/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 1 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 148. Up to 16 conditions per place. [2021-03-25 05:12:06,929 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-25 05:12:06,968 INFO L154 LiptonReduction]: Checked pairs total: 33 [2021-03-25 05:12:06,968 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:12:06,968 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 05:12:06,969 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 161 flow [2021-03-25 05:12:06,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:06,969 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:06,969 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:06,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:12:06,969 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash 952903664, now seen corresponding path program 1 times [2021-03-25 05:12:06,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:06,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989303246] [2021-03-25 05:12:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:06,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:06,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:06,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:06,994 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:06,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:07,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989303246] [2021-03-25 05:12:07,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:07,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:07,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081593457] [2021-03-25 05:12:07,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:07,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:07,003 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 122 [2021-03-25 05:12:07,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:07,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:07,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 122 [2021-03-25 05:12:07,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:07,029 INFO L129 PetriNetUnfolder]: 18/60 cut-off events. [2021-03-25 05:12:07,029 INFO L130 PetriNetUnfolder]: For 189/198 co-relation queries the response was YES. [2021-03-25 05:12:07,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 60 events. 18/60 cut-off events. For 189/198 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 206 event pairs, 0 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 216. Up to 17 conditions per place. [2021-03-25 05:12:07,030 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-03-25 05:12:07,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 28 transitions, 222 flow [2021-03-25 05:12:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:12:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:12:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2021-03-25 05:12:07,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-25 05:12:07,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2021-03-25 05:12:07,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2021-03-25 05:12:07,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:07,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2021-03-25 05:12:07,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:07,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:07,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:07,033 INFO L185 Difference]: Start difference. First operand has 43 places, 24 transitions, 161 flow. Second operand 5 states and 450 transitions. [2021-03-25 05:12:07,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 28 transitions, 222 flow [2021-03-25 05:12:07,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 160 flow, removed 4 selfloop flow, removed 9 redundant places. [2021-03-25 05:12:07,034 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-25 05:12:07,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-25 05:12:07,035 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 05:12:07,035 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:07,035 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 05:12:07,035 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 05:12:07,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:12:07,035 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:12:07,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:07,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:12:07,036 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:12:07,036 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:12:07,036 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:07,036 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:12:07,036 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:12:07,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:07,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:12:07,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:12:07 BasicIcfg [2021-03-25 05:12:07,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:12:07,040 INFO L168 Benchmark]: Toolchain (without parser) took 4151.41 ms. Allocated memory was 308.3 MB in the beginning and 371.2 MB in the end (delta: 62.9 MB). Free memory was 271.3 MB in the beginning and 250.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:07,040 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 308.3 MB. Free memory was 289.2 MB in the beginning and 289.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:12:07,041 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.38 ms. Allocated memory is still 308.3 MB. Free memory was 271.2 MB in the beginning and 270.4 MB in the end (delta: 780.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:07,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.97 ms. Allocated memory is still 308.3 MB. Free memory was 270.4 MB in the beginning and 268.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:07,041 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 308.3 MB. Free memory was 268.3 MB in the beginning and 267.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:07,041 INFO L168 Benchmark]: RCFGBuilder took 427.69 ms. Allocated memory is still 308.3 MB. Free memory was 267.3 MB in the beginning and 243.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:07,042 INFO L168 Benchmark]: TraceAbstraction took 3157.70 ms. Allocated memory was 308.3 MB in the beginning and 371.2 MB in the end (delta: 62.9 MB). Free memory was 243.1 MB in the beginning and 250.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:07,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 308.3 MB. Free memory was 289.2 MB in the beginning and 289.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 497.38 ms. Allocated memory is still 308.3 MB. Free memory was 271.2 MB in the beginning and 270.4 MB in the end (delta: 780.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.97 ms. Allocated memory is still 308.3 MB. Free memory was 270.4 MB in the beginning and 268.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 308.3 MB. Free memory was 268.3 MB in the beginning and 267.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 427.69 ms. Allocated memory is still 308.3 MB. Free memory was 267.3 MB in the beginning and 243.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3157.70 ms. Allocated memory was 308.3 MB in the beginning and 371.2 MB in the end (delta: 62.9 MB). Free memory was 243.1 MB in the beginning and 250.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1194.8ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 595, positive: 553, positive conditional: 0, positive unconditional: 553, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 419, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 419, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 595, positive: 159, positive conditional: 0, positive unconditional: 159, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 419, unknown conditional: 0, unknown unconditional: 419] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 638.6ms, 35 PlacesBefore, 30 PlacesAfterwards, 25 TransitionsBefore, 20 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 333 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 136, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 136, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.7ms, 33 PlacesBefore, 33 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 166 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 3, negative conditional: 0, negative unconditional: 3, 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: 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] , Cache Queries: [ total: 24, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3ms, 36 PlacesBefore, 36 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.7ms, 44 PlacesBefore, 43 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 70 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 50, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 79.5ms, 46 PlacesBefore, 46 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 52 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, 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: 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] , Cache Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.0ms, 44 PlacesBefore, 43 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 33 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 37 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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] , 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): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3067.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 325.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1271.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 17 SDslu, 20 SDs, 0 SdLazy, 94 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.8ms SsaConstructionTime, 125.8ms SatisfiabilityAnalysisTime, 328.4ms InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...