/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/safe007_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:00:06,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:00:06,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:00:06,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:00:06,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:00:06,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:00:06,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:00:06,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:00:06,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:00:06,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:00:06,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:00:06,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:00:06,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:00:06,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:00:06,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:00:06,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:00:06,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:00:06,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:00:06,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:00:06,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:00:06,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:00:06,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:00:06,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:00:06,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:00:06,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:00:06,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:00:06,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:00:06,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:00:06,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:00:06,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:00:06,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:00:06,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:00:06,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:00:06,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:00:06,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:00:06,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:00:06,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:00:06,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:00:06,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:00:06,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:00:06,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:00:06,707 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 05:00:06,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:00:06,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:00:06,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:00:06,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:00:06,746 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:00:06,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:00:06,747 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:00:06,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:00:06,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:00:06,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:00:06,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:00:06,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:00:06,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:00:06,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:00:06,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:00:06,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:00:06,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:00:06,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:00:06,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:00:06,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:00:06,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:00:06,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:00:06,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:00:06,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:00:06,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:00:07,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:00:07,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:00:07,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:00:07,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:00:07,108 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:00:07,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2021-03-25 05:00:07,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1709cb24d/c1634b74e4b24e619477a23270c625bc/FLAG3c419e69e [2021-03-25 05:00:07,700 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:00:07,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2021-03-25 05:00:07,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1709cb24d/c1634b74e4b24e619477a23270c625bc/FLAG3c419e69e [2021-03-25 05:00:08,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1709cb24d/c1634b74e4b24e619477a23270c625bc [2021-03-25 05:00:08,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:00:08,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:00:08,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:08,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:00:08,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:00:08,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7ab30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08, skipping insertion in model container [2021-03-25 05:00:08,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:00:08,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:00:08,386 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/safe007_tso.oepc.i[950,963] [2021-03-25 05:00:08,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:08,576 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:00:08,587 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/safe007_tso.oepc.i[950,963] [2021-03-25 05:00:08,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:08,690 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:00:08,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08 WrapperNode [2021-03-25 05:00:08,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:08,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:08,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:00:08,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:00:08,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:08,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:00:08,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:00:08,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:00:08,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (1/1) ... [2021-03-25 05:00:08,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:00:08,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:00:08,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:00:08,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:00:08,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (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 05:00:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:00:08,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:00:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:00:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:00:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:00:08,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:00:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:00:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:00:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:00:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:00:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:00:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:00:08,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:00:08,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:00:08,871 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 05:00:09,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:00:09,172 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:00:09,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:09 BoogieIcfgContainer [2021-03-25 05:00:09,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:00:09,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:00:09,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:00:09,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:00:09,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:00:08" (1/3) ... [2021-03-25 05:00:09,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d26100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:09, skipping insertion in model container [2021-03-25 05:00:09,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:08" (2/3) ... [2021-03-25 05:00:09,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d26100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:09, skipping insertion in model container [2021-03-25 05:00:09,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:09" (3/3) ... [2021-03-25 05:00:09,183 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2021-03-25 05:00:09,187 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:00:09,190 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:00:09,191 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:00:09,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,223 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,225 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,225 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,226 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,235 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,235 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:09,237 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:00:09,253 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:00:09,270 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:00:09,270 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:00:09,270 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:00:09,270 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:00:09,270 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:00:09,271 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:00:09,271 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:00:09,271 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:00:09,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:00:09,313 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-25 05:00:09,313 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:09,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 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. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:00:09,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:00:09,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-25 05:00:09,321 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:09,329 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:00:09,331 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:00:09,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-25 05:00:09,349 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-25 05:00:09,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:09,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:00:09,352 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:00:10,783 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-25 05:00:10,968 INFO L154 LiptonReduction]: Checked pairs total: 942 [2021-03-25 05:00:10,968 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-25 05:00:10,970 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1650 [2021-03-25 05:00:10,978 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:00:10,978 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:10,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:10,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:10,979 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1196691833, now seen corresponding path program 1 times [2021-03-25 05:00:10,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:10,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837239985] [2021-03-25 05:00:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:11,178 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:11,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:11,195 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 05:00:11,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837239985] [2021-03-25 05:00:11,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:11,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:00:11,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582439785] [2021-03-25 05:00:11,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:00:11,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:00:11,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:00:11,223 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2021-03-25 05:00:11,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 05:00:11,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:11,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2021-03-25 05:00:11,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:11,261 INFO L129 PetriNetUnfolder]: 14/61 cut-off events. [2021-03-25 05:00:11,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:11,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 61 events. 14/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 166 event pairs, 6 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 89. Up to 29 conditions per place. [2021-03-25 05:00:11,263 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 4 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2021-03-25 05:00:11,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 73 flow [2021-03-25 05:00:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-03-25 05:00:11,273 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8448275862068966 [2021-03-25 05:00:11,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-03-25 05:00:11,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-03-25 05:00:11,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:11,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-03-25 05:00:11,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 05:00:11,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 05:00:11,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 05:00:11,288 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 294 transitions. [2021-03-25 05:00:11,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 73 flow [2021-03-25 05:00:11,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:00:11,291 INFO L241 Difference]: Finished difference. Result has 31 places, 24 transitions, 74 flow [2021-03-25 05:00:11,293 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2021-03-25 05:00:11,293 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 05:00:11,293 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:11,294 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 24 transitions, 74 flow [2021-03-25 05:00:11,294 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 24 transitions, 74 flow [2021-03-25 05:00:11,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 24 transitions, 74 flow [2021-03-25 05:00:11,301 INFO L129 PetriNetUnfolder]: 14/61 cut-off events. [2021-03-25 05:00:11,301 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:11,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 61 events. 14/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs, 6 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 92. Up to 29 conditions per place. [2021-03-25 05:00:11,303 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 05:00:11,757 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:00:11,962 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:00:12,025 INFO L154 LiptonReduction]: Checked pairs total: 288 [2021-03-25 05:00:12,025 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:00:12,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 732 [2021-03-25 05:00:12,026 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2021-03-25 05:00:12,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 05:00:12,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:12,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:12,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:00:12,027 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1557259489, now seen corresponding path program 1 times [2021-03-25 05:00:12,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:12,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274267524] [2021-03-25 05:00:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:12,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,115 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:12,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:00:12,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274267524] [2021-03-25 05:00:12,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:12,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:12,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020264516] [2021-03-25 05:00:12,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:12,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:12,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:12,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:12,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-03-25 05:00:12,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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 05:00:12,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:12,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-03-25 05:00:12,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:12,142 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-03-25 05:00:12,142 INFO L130 PetriNetUnfolder]: For 11/41 co-relation queries the response was YES. [2021-03-25 05:00:12,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 41 events. 9/41 cut-off events. For 11/41 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 103 event pairs, 0 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 86. Up to 21 conditions per place. [2021-03-25 05:00:12,143 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-25 05:00:12,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 94 flow [2021-03-25 05:00:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-03-25 05:00:12,146 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305555555555556 [2021-03-25 05:00:12,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-03-25 05:00:12,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-03-25 05:00:12,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:12,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-03-25 05:00:12,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 05:00:12,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 05:00:12,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 05:00:12,150 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 3 states and 299 transitions. [2021-03-25 05:00:12,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 94 flow [2021-03-25 05:00:12,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:00:12,152 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 73 flow [2021-03-25 05:00:12,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-03-25 05:00:12,152 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:00:12,152 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:12,153 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 20 transitions, 73 flow [2021-03-25 05:00:12,153 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 20 transitions, 73 flow [2021-03-25 05:00:12,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 20 transitions, 73 flow [2021-03-25 05:00:12,158 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-03-25 05:00:12,158 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2021-03-25 05:00:12,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 41 events. 9/41 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 110 event pairs, 3 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 75. Up to 21 conditions per place. [2021-03-25 05:00:12,159 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 05:00:12,161 INFO L154 LiptonReduction]: Checked pairs total: 92 [2021-03-25 05:00:12,161 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:12,161 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 05:00:12,162 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 73 flow [2021-03-25 05:00:12,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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 05:00:12,163 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:12,163 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:12,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:00:12,163 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2066713751, now seen corresponding path program 1 times [2021-03-25 05:00:12,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:12,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670106049] [2021-03-25 05:00:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:12,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,230 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:12,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:12,239 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 05:00:12,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670106049] [2021-03-25 05:00:12,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:12,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:12,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036340851] [2021-03-25 05:00:12,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:12,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:12,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:12,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-25 05:00:12,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 05:00:12,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:12,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-25 05:00:12,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:12,297 INFO L129 PetriNetUnfolder]: 14/62 cut-off events. [2021-03-25 05:00:12,297 INFO L130 PetriNetUnfolder]: For 45/89 co-relation queries the response was YES. [2021-03-25 05:00:12,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 62 events. 14/62 cut-off events. For 45/89 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 222 event pairs, 0 based on Foata normal form. 13/73 useless extension candidates. Maximal degree in co-relation 143. Up to 28 conditions per place. [2021-03-25 05:00:12,300 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 7 selfloop transitions, 9 changer transitions 0/27 dead transitions. [2021-03-25 05:00:12,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 136 flow [2021-03-25 05:00:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:00:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:00:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2021-03-25 05:00:12,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2021-03-25 05:00:12,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2021-03-25 05:00:12,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2021-03-25 05:00:12,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:12,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2021-03-25 05:00:12,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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 05:00:12,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 05:00:12,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 05:00:12,311 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 73 flow. Second operand 5 states and 476 transitions. [2021-03-25 05:00:12,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 136 flow [2021-03-25 05:00:12,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:00:12,313 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 131 flow [2021-03-25 05:00:12,313 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2021-03-25 05:00:12,313 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:00:12,313 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:12,313 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 25 transitions, 131 flow [2021-03-25 05:00:12,314 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 25 transitions, 131 flow [2021-03-25 05:00:12,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 25 transitions, 131 flow [2021-03-25 05:00:12,328 INFO L129 PetriNetUnfolder]: 11/63 cut-off events. [2021-03-25 05:00:12,328 INFO L130 PetriNetUnfolder]: For 54/83 co-relation queries the response was YES. [2021-03-25 05:00:12,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 63 events. 11/63 cut-off events. For 54/83 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 242 event pairs, 2 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 157. Up to 27 conditions per place. [2021-03-25 05:00:12,331 INFO L142 LiptonReduction]: Number of co-enabled transitions 166 [2021-03-25 05:00:12,334 INFO L154 LiptonReduction]: Checked pairs total: 115 [2021-03-25 05:00:12,334 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:12,335 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 05:00:12,337 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 131 flow [2021-03-25 05:00:12,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 05:00:12,338 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:12,338 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:12,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:00:12,338 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:12,339 INFO L82 PathProgramCache]: Analyzing trace with hash 356382201, now seen corresponding path program 1 times [2021-03-25 05:00:12,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:12,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001891329] [2021-03-25 05:00:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:12,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,425 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 05:00:12,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001891329] [2021-03-25 05:00:12,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:12,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:12,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498080492] [2021-03-25 05:00:12,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:12,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:12,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:12,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:12,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2021-03-25 05:00:12,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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 05:00:12,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:12,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2021-03-25 05:00:12,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:12,452 INFO L129 PetriNetUnfolder]: 7/56 cut-off events. [2021-03-25 05:00:12,452 INFO L130 PetriNetUnfolder]: For 143/196 co-relation queries the response was YES. [2021-03-25 05:00:12,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 56 events. 7/56 cut-off events. For 143/196 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 221 event pairs, 0 based on Foata normal form. 11/65 useless extension candidates. Maximal degree in co-relation 149. Up to 22 conditions per place. [2021-03-25 05:00:12,453 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 1 selfloop transitions, 3 changer transitions 6/25 dead transitions. [2021-03-25 05:00:12,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 145 flow [2021-03-25 05:00:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:00:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:00:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 05:00:12,455 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8395833333333333 [2021-03-25 05:00:12,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 05:00:12,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 05:00:12,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:12,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 05:00:12,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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 05:00:12,458 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 05:00:12,458 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 05:00:12,458 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 131 flow. Second operand 4 states and 403 transitions. [2021-03-25 05:00:12,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 145 flow [2021-03-25 05:00:12,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 140 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:00:12,461 INFO L241 Difference]: Finished difference. Result has 38 places, 19 transitions, 100 flow [2021-03-25 05:00:12,461 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2021-03-25 05:00:12,462 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 05:00:12,462 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:12,462 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 19 transitions, 100 flow [2021-03-25 05:00:12,462 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 19 transitions, 100 flow [2021-03-25 05:00:12,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 19 transitions, 100 flow [2021-03-25 05:00:12,466 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-25 05:00:12,466 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-03-25 05:00:12,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 27 events. 3/27 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 74. Up to 11 conditions per place. [2021-03-25 05:00:12,467 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-25 05:00:12,490 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-25 05:00:12,490 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:00:12,490 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-25 05:00:12,491 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 106 flow [2021-03-25 05:00:12,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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 05:00:12,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:12,492 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:12,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:00:12,493 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1023720897, now seen corresponding path program 1 times [2021-03-25 05:00:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:12,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980406162] [2021-03-25 05:00:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:12,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,575 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:12,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:12,585 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 05:00:12,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980406162] [2021-03-25 05:00:12,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:12,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:00:12,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977698310] [2021-03-25 05:00:12,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:00:12,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:12,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:00:12,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:00:12,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 121 [2021-03-25 05:00:12,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 05:00:12,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:12,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 121 [2021-03-25 05:00:12,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:12,603 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-25 05:00:12,604 INFO L130 PetriNetUnfolder]: For 63/93 co-relation queries the response was YES. [2021-03-25 05:00:12,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 27 events. 2/27 cut-off events. For 63/93 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 0 based on Foata normal form. 3/29 useless extension candidates. Maximal degree in co-relation 79. Up to 10 conditions per place. [2021-03-25 05:00:12,605 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 5 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-25 05:00:12,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 20 transitions, 132 flow [2021-03-25 05:00:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:00:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:00:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-03-25 05:00:12,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8236914600550964 [2021-03-25 05:00:12,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-03-25 05:00:12,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-03-25 05:00:12,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:12,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-03-25 05:00:12,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 05:00:12,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 05:00:12,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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 05:00:12,609 INFO L185 Difference]: Start difference. First operand has 37 places, 19 transitions, 106 flow. Second operand 3 states and 299 transitions. [2021-03-25 05:00:12,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 20 transitions, 132 flow [2021-03-25 05:00:12,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 91 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-25 05:00:12,613 INFO L241 Difference]: Finished difference. Result has 32 places, 19 transitions, 80 flow [2021-03-25 05:00:12,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2021-03-25 05:00:12,614 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-25 05:00:12,614 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:12,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 19 transitions, 80 flow [2021-03-25 05:00:12,614 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 19 transitions, 80 flow [2021-03-25 05:00:12,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 19 transitions, 80 flow [2021-03-25 05:00:12,619 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-25 05:00:12,619 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2021-03-25 05:00:12,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 27 events. 2/27 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 53. Up to 10 conditions per place. [2021-03-25 05:00:12,619 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-25 05:00:12,641 INFO L154 LiptonReduction]: Checked pairs total: 183 [2021-03-25 05:00:12,641 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:00:12,642 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-25 05:00:12,642 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 76 flow [2021-03-25 05:00:12,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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 05:00:12,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:12,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:12,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:00:12,643 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:12,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:12,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1485616211, now seen corresponding path program 1 times [2021-03-25 05:00:12,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:12,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389637363] [2021-03-25 05:00:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:12,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,707 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:12,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:12,714 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 05:00:12,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389637363] [2021-03-25 05:00:12,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:12,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:12,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988251336] [2021-03-25 05:00:12,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:12,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:12,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:12,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:12,716 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2021-03-25 05:00:12,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 05:00:12,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:12,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2021-03-25 05:00:12,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:12,735 INFO L129 PetriNetUnfolder]: 2/26 cut-off events. [2021-03-25 05:00:12,735 INFO L130 PetriNetUnfolder]: For 27/42 co-relation queries the response was YES. [2021-03-25 05:00:12,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 26 events. 2/26 cut-off events. For 27/42 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 63. Up to 10 conditions per place. [2021-03-25 05:00:12,736 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 3 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2021-03-25 05:00:12,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 19 transitions, 101 flow [2021-03-25 05:00:12,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:00:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:00:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2021-03-25 05:00:12,738 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7745901639344263 [2021-03-25 05:00:12,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2021-03-25 05:00:12,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2021-03-25 05:00:12,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:12,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2021-03-25 05:00:12,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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 05:00:12,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 05:00:12,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 05:00:12,740 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 76 flow. Second operand 4 states and 378 transitions. [2021-03-25 05:00:12,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 19 transitions, 101 flow [2021-03-25 05:00:12,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 19 transitions, 91 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:00:12,742 INFO L241 Difference]: Finished difference. Result has 34 places, 16 transitions, 72 flow [2021-03-25 05:00:12,743 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2021-03-25 05:00:12,743 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:00:12,743 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:12,743 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 16 transitions, 72 flow [2021-03-25 05:00:12,744 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 16 transitions, 72 flow [2021-03-25 05:00:12,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 16 transitions, 72 flow [2021-03-25 05:00:12,747 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 05:00:12,747 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 05:00:12,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 0/16 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:00:12,748 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 05:00:12,788 INFO L154 LiptonReduction]: Checked pairs total: 53 [2021-03-25 05:00:12,788 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:00:12,788 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-25 05:00:12,792 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 68 flow [2021-03-25 05:00:12,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 05:00:12,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:00:12,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:00:12,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:00:12,793 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:00:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:00:12,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1028518720, now seen corresponding path program 1 times [2021-03-25 05:00:12,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:00:12,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060888101] [2021-03-25 05:00:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:00:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:00:12,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:00:12,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:00:12,848 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:00:12,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:00:12,856 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 05:00:12,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060888101] [2021-03-25 05:00:12,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:00:12,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:00:12,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687517868] [2021-03-25 05:00:12,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:00:12,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:00:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:00:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:00:12,858 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 124 [2021-03-25 05:00:12,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 05:00:12,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:00:12,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 124 [2021-03-25 05:00:12,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:00:12,873 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 05:00:12,873 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 05:00:12,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 13 events. 0/13 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 05:00:12,873 INFO L132 encePairwiseOnDemand]: 121/124 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 05:00:12,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 13 transitions, 64 flow [2021-03-25 05:00:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:00:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:00:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-25 05:00:12,875 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7520161290322581 [2021-03-25 05:00:12,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-25 05:00:12,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-25 05:00:12,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:00:12,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-25 05:00:12,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 05:00:12,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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 05:00:12,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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 05:00:12,878 INFO L185 Difference]: Start difference. First operand has 31 places, 14 transitions, 68 flow. Second operand 4 states and 373 transitions. [2021-03-25 05:00:12,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 13 transitions, 64 flow [2021-03-25 05:00:12,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 42 flow, removed 2 selfloop flow, removed 9 redundant places. [2021-03-25 05:00:12,879 INFO L241 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2021-03-25 05:00:12,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2021-03-25 05:00:12,879 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -7 predicate places. [2021-03-25 05:00:12,879 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:12,880 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 0 transitions, 0 flow [2021-03-25 05:00:12,880 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 0 transitions, 0 flow [2021-03-25 05:00:12,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:00:12,880 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:00:12,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:12,880 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 05:00:12,880 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:00:12,880 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:00:12,880 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:00:12,881 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:00:12,882 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:00:12,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 05:00:12,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:00:12,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:00:12 BasicIcfg [2021-03-25 05:00:12,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:00:12,887 INFO L168 Benchmark]: Toolchain (without parser) took 4688.37 ms. Allocated memory is still 375.4 MB. Free memory was 338.6 MB in the beginning and 165.9 MB in the end (delta: 172.7 MB). Peak memory consumption was 175.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:12,891 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 375.4 MB. Free memory was 356.9 MB in the beginning and 356.8 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:00:12,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.65 ms. Allocated memory is still 375.4 MB. Free memory was 338.5 MB in the beginning and 336.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:12,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 375.4 MB. Free memory was 336.2 MB in the beginning and 335.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:00:12,892 INFO L168 Benchmark]: Boogie Preprocessor took 32.71 ms. Allocated memory is still 375.4 MB. Free memory was 335.2 MB in the beginning and 333.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:12,892 INFO L168 Benchmark]: RCFGBuilder took 390.70 ms. Allocated memory is still 375.4 MB. Free memory was 333.1 MB in the beginning and 309.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:12,893 INFO L168 Benchmark]: TraceAbstraction took 3708.71 ms. Allocated memory is still 375.4 MB. Free memory was 309.0 MB in the beginning and 165.9 MB in the end (delta: 143.1 MB). Peak memory consumption was 145.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:00:12,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 375.4 MB. Free memory was 356.9 MB in the beginning and 356.8 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 492.65 ms. Allocated memory is still 375.4 MB. Free memory was 338.5 MB in the beginning and 336.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 375.4 MB. Free memory was 336.2 MB in the beginning and 335.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.71 ms. Allocated memory is still 375.4 MB. Free memory was 335.2 MB in the beginning and 333.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 390.70 ms. Allocated memory is still 375.4 MB. Free memory was 333.1 MB in the beginning and 309.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3708.71 ms. Allocated memory is still 375.4 MB. Free memory was 309.0 MB in the beginning and 165.9 MB in the end (delta: 143.1 MB). Peak memory consumption was 145.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1636.4ms, 70 PlacesBefore, 31 PlacesAfterwards, 61 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 942 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 600, positive: 566, positive conditional: 0, positive unconditional: 566, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 399, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 399, positive: 387, positive conditional: 0, positive unconditional: 387, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 600, positive: 179, positive conditional: 0, positive unconditional: 179, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 399, unknown conditional: 0, unknown unconditional: 399] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 731.4ms, 31 PlacesBefore, 27 PlacesAfterwards, 24 TransitionsBefore, 20 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 288 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 133, positive: 108, positive conditional: 0, positive unconditional: 108, 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: 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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.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] , Cache Queries: [ total: 133, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 29 PlacesBefore, 29 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 92 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 59, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 59, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.2ms, 34 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 166 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 115 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 44, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.7ms, 38 PlacesBefore, 37 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 89, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 89, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.5ms, 32 PlacesBefore, 31 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 97, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 97, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 44.4ms, 34 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 53 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 7, negative conditional: 0, negative unconditional: 7, 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: 25, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 24 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): 15, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3616.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 289.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1702.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 25 SDslu, 8 SDs, 0 SdLazy, 36 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=3, InterpolantAutomatonStates: 26, 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: 21.4ms SsaConstructionTime, 124.6ms SatisfiabilityAnalysisTime, 443.9ms InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 403 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...