./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/mix027_power.oepc_pso.oepc_rmo.oepc.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 d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:06:03,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:06:03,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:06:03,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:06:03,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:06:03,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:06:03,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:06:03,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:06:03,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:06:03,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:06:03,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:06:03,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:06:03,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:06:03,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:06:03,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:06:03,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:06:03,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:06:03,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:06:03,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:06:03,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:06:03,713 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:06:03,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:06:03,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:06:03,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:06:03,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:06:03,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:06:03,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:06:03,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:06:03,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:06:03,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:06:03,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:06:03,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:06:03,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:06:03,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:06:03,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:06:03,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:06:03,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:06:03,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:06:03,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:06:03,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:06:03,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:06:03,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:06:03,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:06:03,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:06:03,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:06:03,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:06:03,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:06:03,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:06:03,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:06:03,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:06:03,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:06:03,766 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:06:03,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:06:03,768 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:06:03,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:06:03,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:06:03,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:06:03,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:06:03,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:06:03,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:06:03,769 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:06:03,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:06:03,770 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:06:03,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:06:03,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:06:03,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:06:03,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:06:03,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:06:03,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:06:03,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:06:03,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:06:03,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:06:03,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:06:03,773 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:06:03,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:06:03,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:06:03,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8f535cb798ce58a79ec2e9a728d4e5d884025e215c7cfd9880fc53267dd5a20 [2022-07-12 10:06:04,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:06:04,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:06:04,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:06:04,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:06:04,045 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:06:04,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:06:04,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666a26682/9f4ede3e87354402b2ec0340c3861274/FLAG5c800cf57 [2022-07-12 10:06:04,513 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:06:04,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:06:04,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666a26682/9f4ede3e87354402b2ec0340c3861274/FLAG5c800cf57 [2022-07-12 10:06:04,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666a26682/9f4ede3e87354402b2ec0340c3861274 [2022-07-12 10:06:04,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:06:04,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:06:04,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:06:04,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:06:04,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:06:04,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:06:04" (1/1) ... [2022-07-12 10:06:04,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccd48e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:04, skipping insertion in model container [2022-07-12 10:06:04,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:06:04" (1/1) ... [2022-07-12 10:06:04,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:06:04,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:06:04,770 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:06:04,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:06:04,960 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:06:04,973 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-12 10:06:05,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:06:05,063 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:06:05,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05 WrapperNode [2022-07-12 10:06:05,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:06:05,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:06:05,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:06:05,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:06:05,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,108 INFO L137 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-07-12 10:06:05,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:06:05,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:06:05,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:06:05,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:06:05,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:06:05,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:06:05,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:06:05,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:06:05,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (1/1) ... [2022-07-12 10:06:05,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:06:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:06:05,185 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) [2022-07-12 10:06:05,187 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 [2022-07-12 10:06:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:06:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:06:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:06:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:06:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:06:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-12 10:06:05,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-12 10:06:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-12 10:06:05,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-12 10:06:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-12 10:06:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-12 10:06:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-12 10:06:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-12 10:06:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:06:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:06:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:06:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:06:05,226 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:06:05,334 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:06:05,335 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:06:05,902 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:06:06,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:06:06,215 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:06:06,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:06:06 BoogieIcfgContainer [2022-07-12 10:06:06,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:06:06,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:06:06,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:06:06,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:06:06,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:06:04" (1/3) ... [2022-07-12 10:06:06,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:06:06, skipping insertion in model container [2022-07-12 10:06:06,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:06:05" (2/3) ... [2022-07-12 10:06:06,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:06:06, skipping insertion in model container [2022-07-12 10:06:06,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:06:06" (3/3) ... [2022-07-12 10:06:06,228 INFO L111 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-07-12 10:06:06,233 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:06:06,241 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:06:06,242 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:06:06,242 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:06:06,311 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:06:06,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-07-12 10:06:06,418 INFO L129 PetriNetUnfolder]: 2/133 cut-off events. [2022-07-12 10:06:06,419 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:06:06,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-07-12 10:06:06,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-07-12 10:06:06,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-07-12 10:06:06,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:06:06,451 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@1334a203, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75d796cd [2022-07-12 10:06:06,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:06:06,470 INFO L129 PetriNetUnfolder]: 0/49 cut-off events. [2022-07-12 10:06:06,470 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:06:06,470 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:06,471 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] [2022-07-12 10:06:06,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1338494467, now seen corresponding path program 1 times [2022-07-12 10:06:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:06,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356974119] [2022-07-12 10:06:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:06,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356974119] [2022-07-12 10:06:06,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356974119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:06,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:06,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:06:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572791788] [2022-07-12 10:06:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:06,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:06:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:06:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:06:06,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-07-12 10:06:06,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:06,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:06,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-07-12 10:06:06,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:07,093 INFO L129 PetriNetUnfolder]: 162/620 cut-off events. [2022-07-12 10:06:07,093 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-12 10:06:07,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3375 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-07-12 10:06:07,106 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-07-12 10:06:07,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-07-12 10:06:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:06:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:06:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-07-12 10:06:07,126 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-07-12 10:06:07,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-07-12 10:06:07,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-07-12 10:06:07,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:07,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-07-12 10:06:07,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 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) [2022-07-12 10:06:07,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2022-07-12 10:06:07,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2022-07-12 10:06:07,145 INFO L186 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-07-12 10:06:07,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-07-12 10:06:07,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:06:07,157 INFO L242 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-07-12 10:06:07,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-07-12 10:06:07,162 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-07-12 10:06:07,163 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-07-12 10:06:07,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:06:07,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:07,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:06:07,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:07,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1196194587, now seen corresponding path program 1 times [2022-07-12 10:06:07,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:07,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119991601] [2022-07-12 10:06:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:07,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:07,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119991601] [2022-07-12 10:06:07,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119991601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:07,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:07,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967283793] [2022-07-12 10:06:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:07,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:07,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:06:07,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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) [2022-07-12 10:06:07,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:07,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:06:07,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:11,888 INFO L129 PetriNetUnfolder]: 14081/30815 cut-off events. [2022-07-12 10:06:11,888 INFO L130 PetriNetUnfolder]: For 1103/1103 co-relation queries the response was YES. [2022-07-12 10:06:12,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51441 conditions, 30815 events. 14081/30815 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 323802 event pairs, 1148 based on Foata normal form. 0/30243 useless extension candidates. Maximal degree in co-relation 51381. Up to 6804 conditions per place. [2022-07-12 10:06:12,104 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 48 selfloop transitions, 12 changer transitions 128/275 dead transitions. [2022-07-12 10:06:12,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 944 flow [2022-07-12 10:06:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:12,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1530 transitions. [2022-07-12 10:06:12,109 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8590679393599102 [2022-07-12 10:06:12,109 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1530 transitions. [2022-07-12 10:06:12,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1530 transitions. [2022-07-12 10:06:12,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:12,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1530 transitions. [2022-07-12 10:06:12,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.6923076923077) internal successors, (1530), 13 states have internal predecessors, (1530), 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) [2022-07-12 10:06:12,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:12,118 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:12,119 INFO L186 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1530 transitions. [2022-07-12 10:06:12,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 944 flow [2022-07-12 10:06:12,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:06:12,124 INFO L242 Difference]: Finished difference. Result has 162 places, 124 transitions, 370 flow [2022-07-12 10:06:12,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=124} [2022-07-12 10:06:12,126 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-07-12 10:06:12,126 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 124 transitions, 370 flow [2022-07-12 10:06:12,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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) [2022-07-12 10:06:12,127 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:12,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:12,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:06:12,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1504018406, now seen corresponding path program 1 times [2022-07-12 10:06:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:12,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632096127] [2022-07-12 10:06:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:12,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632096127] [2022-07-12 10:06:12,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632096127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:12,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:12,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389922528] [2022-07-12 10:06:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:12,354 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:06:12,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 124 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2022-07-12 10:06:12,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:12,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:06:12,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:14,902 INFO L129 PetriNetUnfolder]: 9125/16233 cut-off events. [2022-07-12 10:06:14,902 INFO L130 PetriNetUnfolder]: For 24685/24688 co-relation queries the response was YES. [2022-07-12 10:06:14,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46996 conditions, 16233 events. 9125/16233 cut-off events. For 24685/24688 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 132208 event pairs, 1132 based on Foata normal form. 370/16387 useless extension candidates. Maximal degree in co-relation 46920. Up to 3567 conditions per place. [2022-07-12 10:06:15,034 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 54 selfloop transitions, 12 changer transitions 118/271 dead transitions. [2022-07-12 10:06:15,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 271 transitions, 1482 flow [2022-07-12 10:06:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-07-12 10:06:15,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-07-12 10:06:15,039 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-07-12 10:06:15,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-07-12 10:06:15,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:15,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-07-12 10:06:15,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.92307692307692) internal successors, (1507), 13 states have internal predecessors, (1507), 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) [2022-07-12 10:06:15,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:15,048 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:15,048 INFO L186 Difference]: Start difference. First operand has 162 places, 124 transitions, 370 flow. Second operand 13 states and 1507 transitions. [2022-07-12 10:06:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 271 transitions, 1482 flow [2022-07-12 10:06:15,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 271 transitions, 1458 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-12 10:06:15,158 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 528 flow [2022-07-12 10:06:15,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=528, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-12 10:06:15,160 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 16 predicate places. [2022-07-12 10:06:15,160 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 528 flow [2022-07-12 10:06:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2022-07-12 10:06:15,161 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:15,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:15,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:06:15,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2053332378, now seen corresponding path program 1 times [2022-07-12 10:06:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805851084] [2022-07-12 10:06:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:15,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:15,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805851084] [2022-07-12 10:06:15,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805851084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:15,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:15,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:06:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368728236] [2022-07-12 10:06:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:15,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:06:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:06:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:06:15,309 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-12 10:06:15,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 528 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2022-07-12 10:06:15,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:15,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-12 10:06:15,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:19,605 INFO L129 PetriNetUnfolder]: 19000/33516 cut-off events. [2022-07-12 10:06:19,605 INFO L130 PetriNetUnfolder]: For 59612/100384 co-relation queries the response was YES. [2022-07-12 10:06:19,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80106 conditions, 33516 events. 19000/33516 cut-off events. For 59612/100384 co-relation queries the response was YES. Maximal size of possible extension queue 2266. Compared 310818 event pairs, 1398 based on Foata normal form. 518/31834 useless extension candidates. Maximal degree in co-relation 80023. Up to 10325 conditions per place. [2022-07-12 10:06:19,997 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 101 selfloop transitions, 20 changer transitions 0/228 dead transitions. [2022-07-12 10:06:19,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 1178 flow [2022-07-12 10:06:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:06:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:06:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-07-12 10:06:20,002 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-07-12 10:06:20,002 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-07-12 10:06:20,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-07-12 10:06:20,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:20,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-07-12 10:06:20,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 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) [2022-07-12 10:06:20,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-07-12 10:06:20,013 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 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) [2022-07-12 10:06:20,013 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 528 flow. Second operand 10 states and 1207 transitions. [2022-07-12 10:06:20,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 1178 flow [2022-07-12 10:06:20,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 1157 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-07-12 10:06:20,117 INFO L242 Difference]: Finished difference. Result has 162 places, 150 transitions, 650 flow [2022-07-12 10:06:20,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=650, PETRI_PLACES=162, PETRI_TRANSITIONS=150} [2022-07-12 10:06:20,118 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-07-12 10:06:20,118 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 150 transitions, 650 flow [2022-07-12 10:06:20,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 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) [2022-07-12 10:06:20,119 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:20,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:20,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:06:20,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash -671718172, now seen corresponding path program 1 times [2022-07-12 10:06:20,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:20,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522238168] [2022-07-12 10:06:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:20,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:20,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522238168] [2022-07-12 10:06:20,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522238168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:20,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:20,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022342070] [2022-07-12 10:06:20,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:20,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:20,296 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-07-12 10:06:20,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 150 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2022-07-12 10:06:20,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:20,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-07-12 10:06:20,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:23,700 INFO L129 PetriNetUnfolder]: 9362/22841 cut-off events. [2022-07-12 10:06:23,701 INFO L130 PetriNetUnfolder]: For 38647/42643 co-relation queries the response was YES. [2022-07-12 10:06:23,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66691 conditions, 22841 events. 9362/22841 cut-off events. For 38647/42643 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 262103 event pairs, 2241 based on Foata normal form. 529/21898 useless extension candidates. Maximal degree in co-relation 66599. Up to 3799 conditions per place. [2022-07-12 10:06:23,974 INFO L132 encePairwiseOnDemand]: 123/137 looper letters, 120 selfloop transitions, 48 changer transitions 0/273 dead transitions. [2022-07-12 10:06:23,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 273 transitions, 1725 flow [2022-07-12 10:06:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1493 transitions. [2022-07-12 10:06:23,982 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8382930937675463 [2022-07-12 10:06:23,982 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1493 transitions. [2022-07-12 10:06:23,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1493 transitions. [2022-07-12 10:06:23,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:23,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1493 transitions. [2022-07-12 10:06:23,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.84615384615384) internal successors, (1493), 13 states have internal predecessors, (1493), 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) [2022-07-12 10:06:23,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:23,990 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:23,990 INFO L186 Difference]: Start difference. First operand has 162 places, 150 transitions, 650 flow. Second operand 13 states and 1493 transitions. [2022-07-12 10:06:23,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 273 transitions, 1725 flow [2022-07-12 10:06:24,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 273 transitions, 1687 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-07-12 10:06:24,181 INFO L242 Difference]: Finished difference. Result has 179 places, 184 transitions, 1164 flow [2022-07-12 10:06:24,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1164, PETRI_PLACES=179, PETRI_TRANSITIONS=184} [2022-07-12 10:06:24,182 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 35 predicate places. [2022-07-12 10:06:24,182 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 184 transitions, 1164 flow [2022-07-12 10:06:24,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2022-07-12 10:06:24,183 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:24,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:06:24,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1763515646, now seen corresponding path program 1 times [2022-07-12 10:06:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:24,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837514700] [2022-07-12 10:06:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:24,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:24,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837514700] [2022-07-12 10:06:24,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837514700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:24,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:24,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:06:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090068255] [2022-07-12 10:06:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:24,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:06:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:24,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:06:24,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:06:24,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-12 10:06:24,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 184 transitions, 1164 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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) [2022-07-12 10:06:24,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:24,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-12 10:06:24,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:31,809 INFO L129 PetriNetUnfolder]: 27314/49507 cut-off events. [2022-07-12 10:06:31,810 INFO L130 PetriNetUnfolder]: For 153324/203106 co-relation queries the response was YES. [2022-07-12 10:06:32,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161728 conditions, 49507 events. 27314/49507 cut-off events. For 153324/203106 co-relation queries the response was YES. Maximal size of possible extension queue 3281. Compared 501588 event pairs, 1546 based on Foata normal form. 1200/48879 useless extension candidates. Maximal degree in co-relation 161629. Up to 10430 conditions per place. [2022-07-12 10:06:32,384 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 138 selfloop transitions, 38 changer transitions 0/313 dead transitions. [2022-07-12 10:06:32,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 313 transitions, 2404 flow [2022-07-12 10:06:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:06:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:06:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2022-07-12 10:06:32,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8837731611454239 [2022-07-12 10:06:32,392 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2022-07-12 10:06:32,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2022-07-12 10:06:32,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:32,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2022-07-12 10:06:32,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.07692307692308) internal successors, (1574), 13 states have internal predecessors, (1574), 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) [2022-07-12 10:06:32,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:32,407 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 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) [2022-07-12 10:06:32,407 INFO L186 Difference]: Start difference. First operand has 179 places, 184 transitions, 1164 flow. Second operand 13 states and 1574 transitions. [2022-07-12 10:06:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 313 transitions, 2404 flow [2022-07-12 10:06:33,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 313 transitions, 2386 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-12 10:06:33,937 INFO L242 Difference]: Finished difference. Result has 197 places, 201 transitions, 1397 flow [2022-07-12 10:06:33,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1397, PETRI_PLACES=197, PETRI_TRANSITIONS=201} [2022-07-12 10:06:33,940 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 53 predicate places. [2022-07-12 10:06:33,940 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 201 transitions, 1397 flow [2022-07-12 10:06:33,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 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) [2022-07-12 10:06:33,941 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:33,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:33,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:06:33,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:33,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash -415170025, now seen corresponding path program 1 times [2022-07-12 10:06:33,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:33,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105359630] [2022-07-12 10:06:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:33,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105359630] [2022-07-12 10:06:34,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105359630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:34,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:34,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:06:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217035042] [2022-07-12 10:06:34,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:06:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:06:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:06:34,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-12 10:06:34,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 1397 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2022-07-12 10:06:34,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:34,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-12 10:06:34,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:41,887 INFO L129 PetriNetUnfolder]: 26344/47933 cut-off events. [2022-07-12 10:06:41,887 INFO L130 PetriNetUnfolder]: For 221863/271120 co-relation queries the response was YES. [2022-07-12 10:06:42,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187071 conditions, 47933 events. 26344/47933 cut-off events. For 221863/271120 co-relation queries the response was YES. Maximal size of possible extension queue 3278. Compared 491329 event pairs, 1392 based on Foata normal form. 870/47012 useless extension candidates. Maximal degree in co-relation 186963. Up to 10073 conditions per place. [2022-07-12 10:06:42,449 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 131 selfloop transitions, 58 changer transitions 46/353 dead transitions. [2022-07-12 10:06:42,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 353 transitions, 3035 flow [2022-07-12 10:06:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:06:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:06:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1940 transitions. [2022-07-12 10:06:42,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.885036496350365 [2022-07-12 10:06:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1940 transitions. [2022-07-12 10:06:42,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1940 transitions. [2022-07-12 10:06:42,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:06:42,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1940 transitions. [2022-07-12 10:06:42,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.25) internal successors, (1940), 16 states have internal predecessors, (1940), 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) [2022-07-12 10:06:42,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 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) [2022-07-12 10:06:42,463 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 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) [2022-07-12 10:06:42,463 INFO L186 Difference]: Start difference. First operand has 197 places, 201 transitions, 1397 flow. Second operand 16 states and 1940 transitions. [2022-07-12 10:06:42,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 353 transitions, 3035 flow [2022-07-12 10:06:51,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 353 transitions, 2911 flow, removed 49 selfloop flow, removed 5 redundant places. [2022-07-12 10:06:51,917 INFO L242 Difference]: Finished difference. Result has 208 places, 208 transitions, 1538 flow [2022-07-12 10:06:51,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1538, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-07-12 10:06:51,918 INFO L279 CegarLoopForPetriNet]: 144 programPoint places, 64 predicate places. [2022-07-12 10:06:51,918 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 1538 flow [2022-07-12 10:06:51,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 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) [2022-07-12 10:06:51,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:06:51,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:06:51,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:06:51,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:06:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:06:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1822682210, now seen corresponding path program 1 times [2022-07-12 10:06:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:06:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456772932] [2022-07-12 10:06:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:06:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:06:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:06:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:06:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:06:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456772932] [2022-07-12 10:06:52,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456772932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:06:52,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:06:52,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:06:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142721142] [2022-07-12 10:06:52,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:06:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:06:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:06:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:06:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:06:52,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-07-12 10:06:52,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 1538 flow. Second operand has 9 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 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) [2022-07-12 10:06:52,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:06:52,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-07-12 10:06:52,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:06:59,784 INFO L129 PetriNetUnfolder]: 26029/47322 cut-off events. [2022-07-12 10:06:59,785 INFO L130 PetriNetUnfolder]: For 225200/274512 co-relation queries the response was YES. [2022-07-12 10:07:00,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183388 conditions, 47322 events. 26029/47322 cut-off events. For 225200/274512 co-relation queries the response was YES. Maximal size of possible extension queue 3278. Compared 486554 event pairs, 1379 based on Foata normal form. 606/46137 useless extension candidates. Maximal degree in co-relation 183342. Up to 5828 conditions per place. [2022-07-12 10:07:00,471 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 115 selfloop transitions, 63 changer transitions 46/342 dead transitions. [2022-07-12 10:07:00,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 342 transitions, 3005 flow [2022-07-12 10:07:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:07:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-12 10:07:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2255 transitions. [2022-07-12 10:07:00,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8663081060315021 [2022-07-12 10:07:00,477 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2255 transitions. [2022-07-12 10:07:00,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2255 transitions. [2022-07-12 10:07:00,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:07:00,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2255 transitions. [2022-07-12 10:07:00,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.6842105263158) internal successors, (2255), 19 states have internal predecessors, (2255), 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) [2022-07-12 10:07:00,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 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) [2022-07-12 10:07:00,489 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 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) [2022-07-12 10:07:00,489 INFO L186 Difference]: Start difference. First operand has 208 places, 208 transitions, 1538 flow. Second operand 19 states and 2255 transitions. [2022-07-12 10:07:00,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 342 transitions, 3005 flow