./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/rfi000_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:42:54,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:42:54,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:42:54,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:42:54,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:42:54,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:42:54,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:42:54,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:42:54,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:42:54,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:42:54,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:42:54,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:42:54,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:42:54,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:42:54,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:42:54,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:42:54,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:42:54,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:42:54,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:42:54,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:42:54,754 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:42:54,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:42:54,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:42:54,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:42:54,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:42:54,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:42:54,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:42:54,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:42:54,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:42:54,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:42:54,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:42:54,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:42:54,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:42:54,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:42:54,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:42:54,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:42:54,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:42:54,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:42:54,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:42:54,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:42:54,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:42:54,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:42:54,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:42:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:42:54,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:42:54,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:42:54,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:42:54,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:42:54,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:42:54,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:42:54,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:42:54,819 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:42:54,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:42:54,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:42:54,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:42:54,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:42:54,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:42:54,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:42:54,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:42:54,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:42:54,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:42:54,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:42:54,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:42:54,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:42:54,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:42:54,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:42:54,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:42:54,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:42:54,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:42:54,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:42:54,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:42:54,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:42:54,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:42:54,824 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:42:54,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:42:54,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:42:54,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2022-07-21 08:42:55,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:42:55,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:42:55,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:42:55,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:42:55,167 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:42:55,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-07-21 08:42:55,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdc8085c/90e35ccd6e3f4c5bbb2bb13455eb0986/FLAG1729e5a9b [2022-07-21 08:42:55,741 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:42:55,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2022-07-21 08:42:55,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdc8085c/90e35ccd6e3f4c5bbb2bb13455eb0986/FLAG1729e5a9b [2022-07-21 08:42:56,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfdc8085c/90e35ccd6e3f4c5bbb2bb13455eb0986 [2022-07-21 08:42:56,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:42:56,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:42:56,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:42:56,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:42:56,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:42:56,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ad31e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56, skipping insertion in model container [2022-07-21 08:42:56,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:42:56,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:42:56,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2022-07-21 08:42:56,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:42:56,633 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:42:56,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i[944,957] [2022-07-21 08:42:56,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:42:56,728 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:42:56,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56 WrapperNode [2022-07-21 08:42:56,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:42:56,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:42:56,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:42:56,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:42:56,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,824 INFO L137 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 464 [2022-07-21 08:42:56,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:42:56,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:42:56,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:42:56,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:42:56,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:42:56,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:42:56,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:42:56,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:42:56,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (1/1) ... [2022-07-21 08:42:56,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:42:56,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:42:56,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:42:56,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:42:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:42:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:42:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:42:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:42:56,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:42:56,971 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:42:57,106 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:42:57,107 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:42:57,762 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:42:58,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:42:58,242 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:42:58,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:58 BoogieIcfgContainer [2022-07-21 08:42:58,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:42:58,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:42:58,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:42:58,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:42:58,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:42:56" (1/3) ... [2022-07-21 08:42:58,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a32d674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:42:58, skipping insertion in model container [2022-07-21 08:42:58,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:42:56" (2/3) ... [2022-07-21 08:42:58,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a32d674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:42:58, skipping insertion in model container [2022-07-21 08:42:58,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:58" (3/3) ... [2022-07-21 08:42:58,251 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2022-07-21 08:42:58,256 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:42:58,263 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:42:58,264 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:42:58,264 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:42:58,340 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:42:58,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 97 transitions, 204 flow [2022-07-21 08:42:58,418 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2022-07-21 08:42:58,418 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:42:58,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-07-21 08:42:58,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 97 transitions, 204 flow [2022-07-21 08:42:58,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 196 flow [2022-07-21 08:42:58,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:42:58,438 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@440201b2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27daea9e [2022-07-21 08:42:58,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 08:42:58,448 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2022-07-21 08:42:58,448 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:42:58,449 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:58,449 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:58,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:42:58,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1219813241, now seen corresponding path program 1 times [2022-07-21 08:42:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671569957] [2022-07-21 08:42:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:58,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671569957] [2022-07-21 08:42:58,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671569957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:58,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:58,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:42:58,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673732657] [2022-07-21 08:42:58,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:42:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:42:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:42:58,799 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 97 [2022-07-21 08:42:58,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-21 08:42:58,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:58,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 97 [2022-07-21 08:42:58,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:58,888 INFO L129 PetriNetUnfolder]: 31/182 cut-off events. [2022-07-21 08:42:58,888 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:42:58,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 182 events. 31/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 532 event pairs, 3 based on Foata normal form. 10/181 useless extension candidates. Maximal degree in co-relation 208. Up to 53 conditions per place. [2022-07-21 08:42:58,894 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 11 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2022-07-21 08:42:58,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 220 flow [2022-07-21 08:42:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:42:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:42:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2022-07-21 08:42:58,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9175257731958762 [2022-07-21 08:42:58,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2022-07-21 08:42:58,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2022-07-21 08:42:58,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:58,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2022-07-21 08:42:58,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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) [2022-07-21 08:42:58,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-07-21 08:42:58,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2022-07-21 08:42:58,928 INFO L186 Difference]: Start difference. First operand has 100 places, 95 transitions, 196 flow. Second operand 3 states and 267 transitions. [2022-07-21 08:42:58,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 220 flow [2022-07-21 08:42:58,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:42:58,934 INFO L242 Difference]: Finished difference. Result has 98 places, 91 transitions, 190 flow [2022-07-21 08:42:58,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-07-21 08:42:58,938 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2022-07-21 08:42:58,939 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 190 flow [2022-07-21 08:42:58,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-21 08:42:58,939 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:58,939 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:58,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:42:58,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:42:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash -832897983, now seen corresponding path program 1 times [2022-07-21 08:42:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:58,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17904606] [2022-07-21 08:42:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:42:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:42:59,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:42:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17904606] [2022-07-21 08:42:59,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17904606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:42:59,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:42:59,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:42:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389565180] [2022-07-21 08:42:59,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:42:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:42:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:42:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:42:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:42:59,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2022-07-21 08:42:59,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-07-21 08:42:59,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:42:59,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2022-07-21 08:42:59,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:42:59,567 INFO L129 PetriNetUnfolder]: 103/417 cut-off events. [2022-07-21 08:42:59,567 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-07-21 08:42:59,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 417 events. 103/417 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2106 event pairs, 22 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 593. Up to 65 conditions per place. [2022-07-21 08:42:59,570 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 15 selfloop transitions, 2 changer transitions 37/120 dead transitions. [2022-07-21 08:42:59,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 344 flow [2022-07-21 08:42:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:42:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:42:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 740 transitions. [2022-07-21 08:42:59,575 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.847651775486827 [2022-07-21 08:42:59,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 740 transitions. [2022-07-21 08:42:59,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 740 transitions. [2022-07-21 08:42:59,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:42:59,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 740 transitions. [2022-07-21 08:42:59,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 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) [2022-07-21 08:42:59,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-07-21 08:42:59,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 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) [2022-07-21 08:42:59,582 INFO L186 Difference]: Start difference. First operand has 98 places, 91 transitions, 190 flow. Second operand 9 states and 740 transitions. [2022-07-21 08:42:59,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 344 flow [2022-07-21 08:42:59,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 120 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:42:59,585 INFO L242 Difference]: Finished difference. Result has 111 places, 81 transitions, 186 flow [2022-07-21 08:42:59,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2022-07-21 08:42:59,586 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2022-07-21 08:42:59,586 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 186 flow [2022-07-21 08:42:59,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2022-07-21 08:42:59,587 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:42:59,587 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:42:59,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:42:59,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:42:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:42:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -56070386, now seen corresponding path program 1 times [2022-07-21 08:42:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:42:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217685298] [2022-07-21 08:42:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:42:59,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:42:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217685298] [2022-07-21 08:43:00,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217685298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:00,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:00,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:43:00,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706231109] [2022-07-21 08:43:00,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:00,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:43:00,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:43:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:43:00,121 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-07-21 08:43:00,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2022-07-21 08:43:00,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:00,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-07-21 08:43:00,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:00,518 INFO L129 PetriNetUnfolder]: 80/287 cut-off events. [2022-07-21 08:43:00,519 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-07-21 08:43:00,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 287 events. 80/287 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1095 event pairs, 39 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 504. Up to 107 conditions per place. [2022-07-21 08:43:00,521 INFO L132 encePairwiseOnDemand]: 82/97 looper letters, 22 selfloop transitions, 14 changer transitions 22/116 dead transitions. [2022-07-21 08:43:00,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 395 flow [2022-07-21 08:43:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:43:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:43:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1164 transitions. [2022-07-21 08:43:00,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-21 08:43:00,525 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1164 transitions. [2022-07-21 08:43:00,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1164 transitions. [2022-07-21 08:43:00,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:00,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1164 transitions. [2022-07-21 08:43:00,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.75) internal successors, (1164), 16 states have internal predecessors, (1164), 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) [2022-07-21 08:43:00,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-21 08:43:00,533 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-21 08:43:00,533 INFO L186 Difference]: Start difference. First operand has 111 places, 81 transitions, 186 flow. Second operand 16 states and 1164 transitions. [2022-07-21 08:43:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 395 flow [2022-07-21 08:43:00,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 116 transitions, 361 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:00,538 INFO L242 Difference]: Finished difference. Result has 112 places, 89 transitions, 259 flow [2022-07-21 08:43:00,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=259, PETRI_PLACES=112, PETRI_TRANSITIONS=89} [2022-07-21 08:43:00,539 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2022-07-21 08:43:00,539 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 89 transitions, 259 flow [2022-07-21 08:43:00,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2022-07-21 08:43:00,540 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:00,540 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:00,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:43:00,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1657330500, now seen corresponding path program 1 times [2022-07-21 08:43:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:00,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131656836] [2022-07-21 08:43:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:01,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131656836] [2022-07-21 08:43:01,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131656836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:01,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:01,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:43:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915925880] [2022-07-21 08:43:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:01,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:43:01,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:43:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:43:01,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 97 [2022-07-21 08:43:01,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 89 transitions, 259 flow. Second operand has 17 states, 17 states have (on average 65.41176470588235) internal successors, (1112), 17 states have internal predecessors, (1112), 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) [2022-07-21 08:43:01,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:01,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 97 [2022-07-21 08:43:01,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:02,974 INFO L129 PetriNetUnfolder]: 235/634 cut-off events. [2022-07-21 08:43:02,975 INFO L130 PetriNetUnfolder]: For 444/446 co-relation queries the response was YES. [2022-07-21 08:43:02,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 634 events. 235/634 cut-off events. For 444/446 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3320 event pairs, 41 based on Foata normal form. 14/640 useless extension candidates. Maximal degree in co-relation 1427. Up to 148 conditions per place. [2022-07-21 08:43:02,980 INFO L132 encePairwiseOnDemand]: 78/97 looper letters, 51 selfloop transitions, 31 changer transitions 75/210 dead transitions. [2022-07-21 08:43:02,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 210 transitions, 1030 flow [2022-07-21 08:43:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-21 08:43:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-07-21 08:43:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2649 transitions. [2022-07-21 08:43:02,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7002379064234734 [2022-07-21 08:43:02,987 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2649 transitions. [2022-07-21 08:43:02,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2649 transitions. [2022-07-21 08:43:02,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:02,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2649 transitions. [2022-07-21 08:43:02,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 67.92307692307692) internal successors, (2649), 39 states have internal predecessors, (2649), 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) [2022-07-21 08:43:03,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 97.0) internal successors, (3880), 40 states have internal predecessors, (3880), 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) [2022-07-21 08:43:03,001 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 97.0) internal successors, (3880), 40 states have internal predecessors, (3880), 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) [2022-07-21 08:43:03,001 INFO L186 Difference]: Start difference. First operand has 112 places, 89 transitions, 259 flow. Second operand 39 states and 2649 transitions. [2022-07-21 08:43:03,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 210 transitions, 1030 flow [2022-07-21 08:43:03,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 210 transitions, 978 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-07-21 08:43:03,008 INFO L242 Difference]: Finished difference. Result has 170 places, 114 transitions, 549 flow [2022-07-21 08:43:03,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=549, PETRI_PLACES=170, PETRI_TRANSITIONS=114} [2022-07-21 08:43:03,009 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 70 predicate places. [2022-07-21 08:43:03,010 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 114 transitions, 549 flow [2022-07-21 08:43:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.41176470588235) internal successors, (1112), 17 states have internal predecessors, (1112), 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) [2022-07-21 08:43:03,010 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:03,010 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:03,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:43:03,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:03,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2082412928, now seen corresponding path program 2 times [2022-07-21 08:43:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036213937] [2022-07-21 08:43:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:03,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:03,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036213937] [2022-07-21 08:43:03,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036213937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:03,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:03,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892568981] [2022-07-21 08:43:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:03,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:03,521 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-21 08:43:03,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 114 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 69.57142857142857) internal successors, (974), 14 states have internal predecessors, (974), 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) [2022-07-21 08:43:03,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:03,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-21 08:43:03,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:03,898 INFO L129 PetriNetUnfolder]: 82/308 cut-off events. [2022-07-21 08:43:03,898 INFO L130 PetriNetUnfolder]: For 1760/1797 co-relation queries the response was YES. [2022-07-21 08:43:03,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 308 events. 82/308 cut-off events. For 1760/1797 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1184 event pairs, 41 based on Foata normal form. 19/311 useless extension candidates. Maximal degree in co-relation 1021. Up to 108 conditions per place. [2022-07-21 08:43:03,902 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 27 selfloop transitions, 27 changer transitions 16/132 dead transitions. [2022-07-21 08:43:03,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 132 transitions, 845 flow [2022-07-21 08:43:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1069 transitions. [2022-07-21 08:43:03,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7347079037800688 [2022-07-21 08:43:03,906 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1069 transitions. [2022-07-21 08:43:03,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1069 transitions. [2022-07-21 08:43:03,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:03,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1069 transitions. [2022-07-21 08:43:03,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.26666666666667) internal successors, (1069), 15 states have internal predecessors, (1069), 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) [2022-07-21 08:43:03,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-07-21 08:43:03,912 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 97.0) internal successors, (1552), 16 states have internal predecessors, (1552), 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) [2022-07-21 08:43:03,912 INFO L186 Difference]: Start difference. First operand has 170 places, 114 transitions, 549 flow. Second operand 15 states and 1069 transitions. [2022-07-21 08:43:03,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 132 transitions, 845 flow [2022-07-21 08:43:03,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 132 transitions, 723 flow, removed 57 selfloop flow, removed 25 redundant places. [2022-07-21 08:43:03,920 INFO L242 Difference]: Finished difference. Result has 142 places, 114 transitions, 573 flow [2022-07-21 08:43:03,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=573, PETRI_PLACES=142, PETRI_TRANSITIONS=114} [2022-07-21 08:43:03,921 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 42 predicate places. [2022-07-21 08:43:03,921 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 114 transitions, 573 flow [2022-07-21 08:43:03,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.57142857142857) internal successors, (974), 14 states have internal predecessors, (974), 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) [2022-07-21 08:43:03,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:03,922 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:03,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:43:03,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1898009165, now seen corresponding path program 1 times [2022-07-21 08:43:03,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:03,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192168053] [2022-07-21 08:43:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:03,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:04,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:04,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192168053] [2022-07-21 08:43:04,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192168053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:04,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:04,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:43:04,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320685704] [2022-07-21 08:43:04,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:43:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:04,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:43:04,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:43:04,041 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-07-21 08:43:04,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 114 transitions, 573 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-07-21 08:43:04,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:04,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-07-21 08:43:04,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:04,335 INFO L129 PetriNetUnfolder]: 237/609 cut-off events. [2022-07-21 08:43:04,335 INFO L130 PetriNetUnfolder]: For 1062/1068 co-relation queries the response was YES. [2022-07-21 08:43:04,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 609 events. 237/609 cut-off events. For 1062/1068 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3070 event pairs, 22 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 1727. Up to 112 conditions per place. [2022-07-21 08:43:04,340 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 34 selfloop transitions, 7 changer transitions 53/162 dead transitions. [2022-07-21 08:43:04,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 162 transitions, 957 flow [2022-07-21 08:43:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:43:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:43:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 820 transitions. [2022-07-21 08:43:04,343 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.845360824742268 [2022-07-21 08:43:04,343 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 820 transitions. [2022-07-21 08:43:04,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 820 transitions. [2022-07-21 08:43:04,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:04,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 820 transitions. [2022-07-21 08:43:04,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-07-21 08:43:04,348 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2022-07-21 08:43:04,348 INFO L186 Difference]: Start difference. First operand has 142 places, 114 transitions, 573 flow. Second operand 10 states and 820 transitions. [2022-07-21 08:43:04,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 162 transitions, 957 flow [2022-07-21 08:43:04,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 162 transitions, 840 flow, removed 20 selfloop flow, removed 24 redundant places. [2022-07-21 08:43:04,355 INFO L242 Difference]: Finished difference. Result has 125 places, 96 transitions, 355 flow [2022-07-21 08:43:04,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2022-07-21 08:43:04,357 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 25 predicate places. [2022-07-21 08:43:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 355 flow [2022-07-21 08:43:04,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2022-07-21 08:43:04,358 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:04,359 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:04,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:43:04,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 980599912, now seen corresponding path program 1 times [2022-07-21 08:43:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053506966] [2022-07-21 08:43:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:04,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053506966] [2022-07-21 08:43:04,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053506966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:04,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:04,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105737394] [2022-07-21 08:43:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:04,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:04,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:04,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:04,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:04,894 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-21 08:43:04,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 355 flow. Second operand has 14 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 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) [2022-07-21 08:43:04,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:04,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-21 08:43:04,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:05,350 INFO L129 PetriNetUnfolder]: 55/377 cut-off events. [2022-07-21 08:43:05,350 INFO L130 PetriNetUnfolder]: For 423/429 co-relation queries the response was YES. [2022-07-21 08:43:05,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 377 events. 55/377 cut-off events. For 423/429 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1906 event pairs, 13 based on Foata normal form. 6/367 useless extension candidates. Maximal degree in co-relation 922. Up to 70 conditions per place. [2022-07-21 08:43:05,354 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 49 selfloop transitions, 15 changer transitions 9/134 dead transitions. [2022-07-21 08:43:05,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 676 flow [2022-07-21 08:43:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:43:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:43:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1016 transitions. [2022-07-21 08:43:05,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.748159057437408 [2022-07-21 08:43:05,358 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1016 transitions. [2022-07-21 08:43:05,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1016 transitions. [2022-07-21 08:43:05,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:05,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1016 transitions. [2022-07-21 08:43:05,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.57142857142857) internal successors, (1016), 14 states have internal predecessors, (1016), 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) [2022-07-21 08:43:05,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-21 08:43:05,364 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-21 08:43:05,364 INFO L186 Difference]: Start difference. First operand has 125 places, 96 transitions, 355 flow. Second operand 14 states and 1016 transitions. [2022-07-21 08:43:05,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 676 flow [2022-07-21 08:43:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 663 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-21 08:43:05,368 INFO L242 Difference]: Finished difference. Result has 134 places, 105 transitions, 438 flow [2022-07-21 08:43:05,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=438, PETRI_PLACES=134, PETRI_TRANSITIONS=105} [2022-07-21 08:43:05,369 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 34 predicate places. [2022-07-21 08:43:05,369 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 105 transitions, 438 flow [2022-07-21 08:43:05,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 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) [2022-07-21 08:43:05,370 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:05,370 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:05,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:43:05,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:05,371 INFO L85 PathProgramCache]: Analyzing trace with hash 520919172, now seen corresponding path program 2 times [2022-07-21 08:43:05,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:05,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673100992] [2022-07-21 08:43:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:05,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:05,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673100992] [2022-07-21 08:43:05,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673100992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:05,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:05,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 08:43:05,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842321259] [2022-07-21 08:43:05,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:05,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 08:43:05,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:05,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 08:43:05,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:43:05,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 97 [2022-07-21 08:43:05,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 105 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-07-21 08:43:05,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:05,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 97 [2022-07-21 08:43:05,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:06,606 INFO L129 PetriNetUnfolder]: 65/449 cut-off events. [2022-07-21 08:43:06,607 INFO L130 PetriNetUnfolder]: For 790/798 co-relation queries the response was YES. [2022-07-21 08:43:06,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 449 events. 65/449 cut-off events. For 790/798 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2548 event pairs, 18 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 1172. Up to 104 conditions per place. [2022-07-21 08:43:06,611 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 36 selfloop transitions, 27 changer transitions 10/135 dead transitions. [2022-07-21 08:43:06,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 135 transitions, 764 flow [2022-07-21 08:43:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:43:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:43:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1164 transitions. [2022-07-21 08:43:06,615 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-21 08:43:06,615 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1164 transitions. [2022-07-21 08:43:06,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1164 transitions. [2022-07-21 08:43:06,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:06,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1164 transitions. [2022-07-21 08:43:06,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.75) internal successors, (1164), 16 states have internal predecessors, (1164), 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) [2022-07-21 08:43:06,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-21 08:43:06,626 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2022-07-21 08:43:06,626 INFO L186 Difference]: Start difference. First operand has 134 places, 105 transitions, 438 flow. Second operand 16 states and 1164 transitions. [2022-07-21 08:43:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 135 transitions, 764 flow [2022-07-21 08:43:06,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 135 transitions, 735 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-21 08:43:06,632 INFO L242 Difference]: Finished difference. Result has 148 places, 115 transitions, 567 flow [2022-07-21 08:43:06,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=567, PETRI_PLACES=148, PETRI_TRANSITIONS=115} [2022-07-21 08:43:06,634 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 48 predicate places. [2022-07-21 08:43:06,635 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 115 transitions, 567 flow [2022-07-21 08:43:06,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-07-21 08:43:06,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:06,636 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:06,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:43:06,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash 256124214, now seen corresponding path program 3 times [2022-07-21 08:43:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:06,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021220031] [2022-07-21 08:43:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:06,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021220031] [2022-07-21 08:43:06,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021220031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:06,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:06,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82423913] [2022-07-21 08:43:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:06,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:06,775 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 97 [2022-07-21 08:43:06,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 115 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:06,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 97 [2022-07-21 08:43:06,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:07,027 INFO L129 PetriNetUnfolder]: 166/587 cut-off events. [2022-07-21 08:43:07,028 INFO L130 PetriNetUnfolder]: For 1524/1526 co-relation queries the response was YES. [2022-07-21 08:43:07,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 587 events. 166/587 cut-off events. For 1524/1526 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3512 event pairs, 26 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 1966. Up to 105 conditions per place. [2022-07-21 08:43:07,032 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 44 selfloop transitions, 10 changer transitions 42/163 dead transitions. [2022-07-21 08:43:07,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 163 transitions, 1136 flow [2022-07-21 08:43:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:43:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:43:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 867 transitions. [2022-07-21 08:43:07,035 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8125585754451734 [2022-07-21 08:43:07,035 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 867 transitions. [2022-07-21 08:43:07,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 867 transitions. [2022-07-21 08:43:07,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:07,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 867 transitions. [2022-07-21 08:43:07,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.81818181818181) internal successors, (867), 11 states have internal predecessors, (867), 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) [2022-07-21 08:43:07,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2022-07-21 08:43:07,041 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2022-07-21 08:43:07,041 INFO L186 Difference]: Start difference. First operand has 148 places, 115 transitions, 567 flow. Second operand 11 states and 867 transitions. [2022-07-21 08:43:07,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 163 transitions, 1136 flow [2022-07-21 08:43:07,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 163 transitions, 883 flow, removed 108 selfloop flow, removed 19 redundant places. [2022-07-21 08:43:07,050 INFO L242 Difference]: Finished difference. Result has 139 places, 110 transitions, 460 flow [2022-07-21 08:43:07,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=460, PETRI_PLACES=139, PETRI_TRANSITIONS=110} [2022-07-21 08:43:07,052 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 39 predicate places. [2022-07-21 08:43:07,052 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 110 transitions, 460 flow [2022-07-21 08:43:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,052 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:07,053 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:07,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:43:07,053 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash 313201364, now seen corresponding path program 1 times [2022-07-21 08:43:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:07,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796827073] [2022-07-21 08:43:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:07,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:07,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796827073] [2022-07-21 08:43:07,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796827073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:07,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:07,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 08:43:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555813361] [2022-07-21 08:43:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:07,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 08:43:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 08:43:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:43:07,967 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 97 [2022-07-21 08:43:07,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 110 transitions, 460 flow. Second operand has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 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) [2022-07-21 08:43:07,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:07,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 97 [2022-07-21 08:43:07,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:08,932 INFO L129 PetriNetUnfolder]: 17/240 cut-off events. [2022-07-21 08:43:08,932 INFO L130 PetriNetUnfolder]: For 291/296 co-relation queries the response was YES. [2022-07-21 08:43:08,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 240 events. 17/240 cut-off events. For 291/296 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 990 event pairs, 1 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 595. Up to 39 conditions per place. [2022-07-21 08:43:08,934 INFO L132 encePairwiseOnDemand]: 83/97 looper letters, 34 selfloop transitions, 12 changer transitions 10/119 dead transitions. [2022-07-21 08:43:08,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 119 transitions, 608 flow [2022-07-21 08:43:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:43:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:43:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 993 transitions. [2022-07-21 08:43:08,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7312223858615611 [2022-07-21 08:43:08,937 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 993 transitions. [2022-07-21 08:43:08,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 993 transitions. [2022-07-21 08:43:08,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:08,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 993 transitions. [2022-07-21 08:43:08,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 70.92857142857143) internal successors, (993), 14 states have internal predecessors, (993), 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) [2022-07-21 08:43:08,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-21 08:43:08,947 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2022-07-21 08:43:08,947 INFO L186 Difference]: Start difference. First operand has 139 places, 110 transitions, 460 flow. Second operand 14 states and 993 transitions. [2022-07-21 08:43:08,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 119 transitions, 608 flow [2022-07-21 08:43:08,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 119 transitions, 558 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-07-21 08:43:08,954 INFO L242 Difference]: Finished difference. Result has 143 places, 108 transitions, 444 flow [2022-07-21 08:43:08,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=444, PETRI_PLACES=143, PETRI_TRANSITIONS=108} [2022-07-21 08:43:08,955 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2022-07-21 08:43:08,955 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 108 transitions, 444 flow [2022-07-21 08:43:08,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 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) [2022-07-21 08:43:08,956 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:08,956 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:43:08,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -538835402, now seen corresponding path program 2 times [2022-07-21 08:43:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:08,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95154190] [2022-07-21 08:43:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:09,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95154190] [2022-07-21 08:43:09,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95154190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:09,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:09,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:43:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755159434] [2022-07-21 08:43:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:43:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:43:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:43:09,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 97 [2022-07-21 08:43:09,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 108 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2022-07-21 08:43:09,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:09,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 97 [2022-07-21 08:43:09,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:09,201 INFO L129 PetriNetUnfolder]: 24/248 cut-off events. [2022-07-21 08:43:09,201 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-07-21 08:43:09,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 248 events. 24/248 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1043 event pairs, 0 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 595. Up to 39 conditions per place. [2022-07-21 08:43:09,203 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 16 selfloop transitions, 2 changer transitions 42/125 dead transitions. [2022-07-21 08:43:09,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 125 transitions, 639 flow [2022-07-21 08:43:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:43:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:43:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 480 transitions. [2022-07-21 08:43:09,205 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8247422680412371 [2022-07-21 08:43:09,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 480 transitions. [2022-07-21 08:43:09,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 480 transitions. [2022-07-21 08:43:09,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:09,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 480 transitions. [2022-07-21 08:43:09,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.0) internal successors, (480), 6 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) [2022-07-21 08:43:09,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2022-07-21 08:43:09,208 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2022-07-21 08:43:09,208 INFO L186 Difference]: Start difference. First operand has 143 places, 108 transitions, 444 flow. Second operand 6 states and 480 transitions. [2022-07-21 08:43:09,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 125 transitions, 639 flow [2022-07-21 08:43:09,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 566 flow, removed 11 selfloop flow, removed 18 redundant places. [2022-07-21 08:43:09,212 INFO L242 Difference]: Finished difference. Result has 130 places, 82 transitions, 250 flow [2022-07-21 08:43:09,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=130, PETRI_TRANSITIONS=82} [2022-07-21 08:43:09,212 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 30 predicate places. [2022-07-21 08:43:09,213 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 82 transitions, 250 flow [2022-07-21 08:43:09,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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) [2022-07-21 08:43:09,219 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:09,219 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:43:09,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:43:09,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1294883766, now seen corresponding path program 3 times [2022-07-21 08:43:09,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:09,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645443537] [2022-07-21 08:43:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:09,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645443537] [2022-07-21 08:43:09,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645443537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:09,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:09,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84147833] [2022-07-21 08:43:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:09,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-07-21 08:43:09,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 82 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 67.85714285714286) internal successors, (950), 14 states have internal predecessors, (950), 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) [2022-07-21 08:43:09,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:09,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-07-21 08:43:09,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:09,974 INFO L129 PetriNetUnfolder]: 2/85 cut-off events. [2022-07-21 08:43:09,974 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-21 08:43:09,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 85 events. 2/85 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 1 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2022-07-21 08:43:09,975 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-07-21 08:43:09,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 80 transitions, 294 flow [2022-07-21 08:43:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:43:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:43:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 818 transitions. [2022-07-21 08:43:09,976 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7027491408934707 [2022-07-21 08:43:09,976 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 818 transitions. [2022-07-21 08:43:09,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 818 transitions. [2022-07-21 08:43:09,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:09,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 818 transitions. [2022-07-21 08:43:09,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.16666666666667) internal successors, (818), 12 states have internal predecessors, (818), 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) [2022-07-21 08:43:09,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 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) [2022-07-21 08:43:09,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 97.0) internal successors, (1261), 13 states have internal predecessors, (1261), 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) [2022-07-21 08:43:09,981 INFO L186 Difference]: Start difference. First operand has 130 places, 82 transitions, 250 flow. Second operand 12 states and 818 transitions. [2022-07-21 08:43:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 80 transitions, 294 flow [2022-07-21 08:43:09,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 80 transitions, 231 flow, removed 11 selfloop flow, removed 23 redundant places. [2022-07-21 08:43:09,983 INFO L242 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2022-07-21 08:43:09,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2022-07-21 08:43:09,984 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2022-07-21 08:43:09,984 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2022-07-21 08:43:09,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 67.85714285714286) internal successors, (950), 14 states have internal predecessors, (950), 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) [2022-07-21 08:43:09,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-21 08:43:09,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-21 08:43:09,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-21 08:43:09,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-21 08:43:09,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-21 08:43:09,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:43:09,989 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2022-07-21 08:43:09,993 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:43:09,993 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:43:09,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:43:09 BasicIcfg [2022-07-21 08:43:09,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:43:09,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:43:09,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:43:09,998 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:43:09,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:58" (3/4) ... [2022-07-21 08:43:10,000 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:43:10,004 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:43:10,004 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:43:10,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2022-07-21 08:43:10,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-21 08:43:10,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-21 08:43:10,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:43:10,089 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:43:10,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:43:10,090 INFO L158 Benchmark]: Toolchain (without parser) took 13887.77ms. Allocated memory was 58.7MB in the beginning and 257.9MB in the end (delta: 199.2MB). Free memory was 36.1MB in the beginning and 78.6MB in the end (delta: -42.4MB). Peak memory consumption was 154.8MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,090 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:43:10,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.35ms. Allocated memory is still 58.7MB. Free memory was 35.9MB in the beginning and 26.9MB in the end (delta: 9.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.58ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 26.9MB in the beginning and 54.7MB in the end (delta: -27.9MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,091 INFO L158 Benchmark]: Boogie Preprocessor took 77.70ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 52.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,091 INFO L158 Benchmark]: RCFGBuilder took 1337.42ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 52.1MB in the beginning and 41.5MB in the end (delta: 10.5MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,092 INFO L158 Benchmark]: TraceAbstraction took 11751.51ms. Allocated memory was 96.5MB in the beginning and 257.9MB in the end (delta: 161.5MB). Free memory was 40.9MB in the beginning and 83.8MB in the end (delta: -42.9MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,092 INFO L158 Benchmark]: Witness Printer took 91.19ms. Allocated memory is still 257.9MB. Free memory was 83.8MB in the beginning and 78.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:43:10,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 41.0MB in the beginning and 41.0MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.35ms. Allocated memory is still 58.7MB. Free memory was 35.9MB in the beginning and 26.9MB in the end (delta: 9.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.58ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 26.9MB in the beginning and 54.7MB in the end (delta: -27.9MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.70ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 52.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1337.42ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 52.1MB in the beginning and 41.5MB in the end (delta: 10.5MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11751.51ms. Allocated memory was 96.5MB in the beginning and 257.9MB in the end (delta: 161.5MB). Free memory was 40.9MB in the beginning and 83.8MB in the end (delta: -42.9MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. * Witness Printer took 91.19ms. Allocated memory is still 257.9MB. Free memory was 83.8MB in the beginning and 78.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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 with 1 thread instances CFG has 5 procedures, 117 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 566 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 762 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 990 mSDsCounter, 223 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1913 IncrementalHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 223 mSolverCounterUnsat, 136 mSDtfsCounter, 1913 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=573occurred in iteration=5, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 841 NumberOfCodeBlocks, 841 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 829 ConstructedInterpolants, 0 QuantifiedInterpolants, 6976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:43:10,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE