./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -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 fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 04:03:52,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 04:03:52,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 04:03:52,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 04:03:52,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 04:03:52,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 04:03:52,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 04:03:52,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 04:03:52,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 04:03:52,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 04:03:52,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 04:03:52,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 04:03:52,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 04:03:52,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 04:03:52,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 04:03:52,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 04:03:52,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 04:03:52,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 04:03:52,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 04:03:52,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 04:03:52,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 04:03:52,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 04:03:52,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 04:03:52,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 04:03:52,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 04:03:52,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 04:03:52,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 04:03:52,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 04:03:52,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 04:03:52,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 04:03:52,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 04:03:52,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 04:03:52,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 04:03:52,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 04:03:52,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 04:03:52,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 04:03:52,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 04:03:52,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 04:03:52,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 04:03:52,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 04:03:52,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 04:03:52,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 04:03:52,840 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 04:03:52,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 04:03:52,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 04:03:52,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 04:03:52,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 04:03:52,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 04:03:52,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 04:03:52,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 04:03:52,843 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 04:03:52,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 04:03:52,843 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 04:03:52,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 04:03:52,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 04:03:52,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 04:03:52,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 04:03:52,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 04:03:52,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 04:03:52,845 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 04:03:52,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 04:03:52,845 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 04:03:52,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 04:03:52,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 04:03:52,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 04:03:52,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 04:03:52,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:03:52,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 04:03:52,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 04:03:52,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 04:03:52,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 04:03:52,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 04:03:52,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 04:03:52,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 04:03:52,847 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 04:03:52,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 04:03:52,847 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 04:03:52,847 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 04:03:53,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 04:03:53,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 04:03:53,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 04:03:53,113 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 04:03:53,113 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 04:03:53,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-31 04:03:54,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 04:03:54,198 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 04:03:54,198 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-31 04:03:54,206 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fd10423/04e707e0e79044179be46e6f85473a20/FLAG90a82e9f9 [2023-08-31 04:03:54,218 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fd10423/04e707e0e79044179be46e6f85473a20 [2023-08-31 04:03:54,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 04:03:54,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 04:03:54,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 04:03:54,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 04:03:54,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 04:03:54,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231696b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54, skipping insertion in model container [2023-08-31 04:03:54,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 04:03:54,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 04:03:54,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2023-08-31 04:03:54,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:03:54,336 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 04:03:54,346 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2023-08-31 04:03:54,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:03:54,355 INFO L208 MainTranslator]: Completed translation [2023-08-31 04:03:54,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54 WrapperNode [2023-08-31 04:03:54,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 04:03:54,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 04:03:54,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 04:03:54,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 04:03:54,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,380 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-08-31 04:03:54,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 04:03:54,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 04:03:54,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 04:03:54,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 04:03:54,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,392 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 04:03:54,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 04:03:54,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 04:03:54,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 04:03:54,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (1/1) ... [2023-08-31 04:03:54,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:03:54,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:03:54,434 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) [2023-08-31 04:03:54,465 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 [2023-08-31 04:03:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 04:03:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 04:03:54,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 04:03:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 04:03:54,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 04:03:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 04:03:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 04:03:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 04:03:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 04:03:54,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 04:03:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 04:03:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 04:03:54,477 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 04:03:54,598 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 04:03:54,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 04:03:54,722 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 04:03:54,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 04:03:54,727 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-31 04:03:54,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:03:54 BoogieIcfgContainer [2023-08-31 04:03:54,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 04:03:54,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 04:03:54,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 04:03:54,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 04:03:54,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 04:03:54" (1/3) ... [2023-08-31 04:03:54,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55454275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:03:54, skipping insertion in model container [2023-08-31 04:03:54,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:03:54" (2/3) ... [2023-08-31 04:03:54,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55454275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:03:54, skipping insertion in model container [2023-08-31 04:03:54,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:03:54" (3/3) ... [2023-08-31 04:03:54,736 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-08-31 04:03:54,742 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 04:03:54,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 04:03:54,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 04:03:54,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 04:03:54,806 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 04:03:54,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 174 flow [2023-08-31 04:03:54,854 INFO L130 PetriNetUnfolder]: 6/77 cut-off events. [2023-08-31 04:03:54,854 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:03:54,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 6/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-31 04:03:54,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 174 flow [2023-08-31 04:03:54,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 150 flow [2023-08-31 04:03:54,867 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 04:03:54,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 69 transitions, 150 flow [2023-08-31 04:03:54,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 69 transitions, 150 flow [2023-08-31 04:03:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 150 flow [2023-08-31 04:03:54,889 INFO L130 PetriNetUnfolder]: 6/69 cut-off events. [2023-08-31 04:03:54,889 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:03:54,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 6/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-31 04:03:54,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 368 [2023-08-31 04:03:56,444 INFO L134 LiptonReduction]: Checked pairs total: 388 [2023-08-31 04:03:56,444 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-31 04:03:56,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 04:03:56,466 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@286d7703, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 04:03:56,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 04:03:56,475 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-31 04:03:56,475 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:03:56,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:56,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:56,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:56,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash 626447548, now seen corresponding path program 1 times [2023-08-31 04:03:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995763218] [2023-08-31 04:03:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:56,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995763218] [2023-08-31 04:03:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995763218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:03:56,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:03:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 04:03:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127473910] [2023-08-31 04:03:56,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:03:56,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:03:56,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:03:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:03:56,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 146 [2023-08-31 04:03:56,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2023-08-31 04:03:56,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:56,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 146 [2023-08-31 04:03:56,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:56,934 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-08-31 04:03:56,935 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-31 04:03:56,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-08-31 04:03:56,938 INFO L137 encePairwiseOnDemand]: 142/146 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-31 04:03:56,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-08-31 04:03:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:03:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:03:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-31 04:03:56,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-08-31 04:03:56,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-31 04:03:56,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-31 04:03:56,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:56,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-31 04:03:56,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-08-31 04:03:56,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2023-08-31 04:03:56,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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) [2023-08-31 04:03:56,964 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-08-31 04:03:56,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-08-31 04:03:56,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 04:03:56,967 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-08-31 04:03:56,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-08-31 04:03:56,970 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-31 04:03:56,971 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-08-31 04:03:56,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2023-08-31 04:03:56,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:56,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:56,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 04:03:56,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:56,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2054649994, now seen corresponding path program 1 times [2023-08-31 04:03:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:56,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571565820] [2023-08-31 04:03:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:56,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:57,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571565820] [2023-08-31 04:03:57,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571565820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:03:57,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:03:57,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 04:03:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32360062] [2023-08-31 04:03:57,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:03:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 04:03:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 04:03:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 04:03:57,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:03:57,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-08-31 04:03:57,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:57,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:03:57,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:57,120 INFO L130 PetriNetUnfolder]: 35/71 cut-off events. [2023-08-31 04:03:57,121 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-31 04:03:57,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 45 conditions per place. [2023-08-31 04:03:57,122 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-08-31 04:03:57,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 28 transitions, 135 flow [2023-08-31 04:03:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 04:03:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 04:03:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-08-31 04:03:57,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2023-08-31 04:03:57,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-08-31 04:03:57,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-08-31 04:03:57,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:57,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-08-31 04:03:57,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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) [2023-08-31 04:03:57,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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) [2023-08-31 04:03:57,130 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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) [2023-08-31 04:03:57,131 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 4 states and 270 transitions. [2023-08-31 04:03:57,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 28 transitions, 135 flow [2023-08-31 04:03:57,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 04:03:57,132 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 59 flow [2023-08-31 04:03:57,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-08-31 04:03:57,133 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-08-31 04:03:57,133 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 59 flow [2023-08-31 04:03:57,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-08-31 04:03:57,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:57,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:57,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 04:03:57,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:57,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1524373393, now seen corresponding path program 1 times [2023-08-31 04:03:57,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085082119] [2023-08-31 04:03:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085082119] [2023-08-31 04:03:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085082119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357647985] [2023-08-31 04:03:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:57,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:03:57,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:03:57,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 04:03:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:57,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 04:03:57,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:03:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:03:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357647985] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:57,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 04:03:57,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-31 04:03:57,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795759578] [2023-08-31 04:03:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:03:57,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 04:03:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 04:03:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-31 04:03:57,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:03:57,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-08-31 04:03:57,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:57,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:03:57,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:57,446 INFO L130 PetriNetUnfolder]: 40/79 cut-off events. [2023-08-31 04:03:57,446 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 04:03:57,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 79 events. 40/79 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 53. Up to 39 conditions per place. [2023-08-31 04:03:57,447 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-31 04:03:57,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 30 transitions, 165 flow [2023-08-31 04:03:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 04:03:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 04:03:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-08-31 04:03:57,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2023-08-31 04:03:57,449 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-08-31 04:03:57,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-08-31 04:03:57,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:57,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-08-31 04:03:57,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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) [2023-08-31 04:03:57,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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) [2023-08-31 04:03:57,451 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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) [2023-08-31 04:03:57,451 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 59 flow. Second operand 4 states and 270 transitions. [2023-08-31 04:03:57,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 30 transitions, 165 flow [2023-08-31 04:03:57,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 155 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 04:03:57,453 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 88 flow [2023-08-31 04:03:57,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-08-31 04:03:57,453 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-08-31 04:03:57,453 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 88 flow [2023-08-31 04:03:57,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-08-31 04:03:57,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:57,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:57,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 04:03:57,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:57,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:57,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash 664575342, now seen corresponding path program 2 times [2023-08-31 04:03:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:57,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937803442] [2023-08-31 04:03:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937803442] [2023-08-31 04:03:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937803442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:57,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437391822] [2023-08-31 04:03:57,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 04:03:57,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:03:57,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:03:57,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 04:03:57,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 04:03:57,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:03:57,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 04:03:57,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:03:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:03:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437391822] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:57,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 04:03:57,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-08-31 04:03:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814387615] [2023-08-31 04:03:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:03:57,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 04:03:57,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 04:03:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-31 04:03:57,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 146 [2023-08-31 04:03:57,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 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) [2023-08-31 04:03:57,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:57,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 146 [2023-08-31 04:03:57,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:58,025 INFO L130 PetriNetUnfolder]: 76/156 cut-off events. [2023-08-31 04:03:58,025 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-08-31 04:03:58,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 156 events. 76/156 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 490 event pairs, 4 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-08-31 04:03:58,028 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 35 selfloop transitions, 9 changer transitions 2/46 dead transitions. [2023-08-31 04:03:58,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 46 transitions, 285 flow [2023-08-31 04:03:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 04:03:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 04:03:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2023-08-31 04:03:58,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47534246575342465 [2023-08-31 04:03:58,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 347 transitions. [2023-08-31 04:03:58,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 347 transitions. [2023-08-31 04:03:58,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:58,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 347 transitions. [2023-08-31 04:03:58,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-08-31 04:03:58,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2023-08-31 04:03:58,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2023-08-31 04:03:58,033 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 88 flow. Second operand 5 states and 347 transitions. [2023-08-31 04:03:58,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 46 transitions, 285 flow [2023-08-31 04:03:58,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 04:03:58,039 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 172 flow [2023-08-31 04:03:58,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-31 04:03:58,040 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-08-31 04:03:58,041 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 172 flow [2023-08-31 04:03:58,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 states have internal predecessors, (317), 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) [2023-08-31 04:03:58,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:58,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:58,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 04:03:58,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-31 04:03:58,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:58,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:58,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1369565425, now seen corresponding path program 1 times [2023-08-31 04:03:58,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:58,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370569515] [2023-08-31 04:03:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:58,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:58,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370569515] [2023-08-31 04:03:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370569515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951924848] [2023-08-31 04:03:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:58,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:58,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:03:58,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:03:58,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 04:03:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:58,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 04:03:58,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:03:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:58,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:03:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951924848] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:03:58,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:03:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-08-31 04:03:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827384490] [2023-08-31 04:03:58,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:03:58,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 04:03:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 04:03:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-31 04:03:58,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:03:58,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 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) [2023-08-31 04:03:58,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:58,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:03:58,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:58,732 INFO L130 PetriNetUnfolder]: 124/248 cut-off events. [2023-08-31 04:03:58,732 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-08-31 04:03:58,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 248 events. 124/248 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 947 event pairs, 2 based on Foata normal form. 29/277 useless extension candidates. Maximal degree in co-relation 298. Up to 83 conditions per place. [2023-08-31 04:03:58,735 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 25 selfloop transitions, 13 changer transitions 38/76 dead transitions. [2023-08-31 04:03:58,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 622 flow [2023-08-31 04:03:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 04:03:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 04:03:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 721 transitions. [2023-08-31 04:03:58,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489414694894147 [2023-08-31 04:03:58,737 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 721 transitions. [2023-08-31 04:03:58,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 721 transitions. [2023-08-31 04:03:58,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:58,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 721 transitions. [2023-08-31 04:03:58,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.54545454545455) internal successors, (721), 11 states have internal predecessors, (721), 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) [2023-08-31 04:03:58,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 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) [2023-08-31 04:03:58,741 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 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) [2023-08-31 04:03:58,741 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 172 flow. Second operand 11 states and 721 transitions. [2023-08-31 04:03:58,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 622 flow [2023-08-31 04:03:58,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 76 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-31 04:03:58,746 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 247 flow [2023-08-31 04:03:58,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=247, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-08-31 04:03:58,748 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 28 predicate places. [2023-08-31 04:03:58,748 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 247 flow [2023-08-31 04:03:58,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 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) [2023-08-31 04:03:58,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:58,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:58,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 04:03:58,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:58,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:58,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:58,957 INFO L85 PathProgramCache]: Analyzing trace with hash -514417009, now seen corresponding path program 2 times [2023-08-31 04:03:58,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:58,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935805980] [2023-08-31 04:03:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:58,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:59,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935805980] [2023-08-31 04:03:59,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935805980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:59,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759879191] [2023-08-31 04:03:59,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 04:03:59,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:59,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:03:59,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:03:59,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 04:03:59,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 04:03:59,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:03:59,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 04:03:59,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:03:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:59,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 04:03:59,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759879191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:03:59,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 04:03:59,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-31 04:03:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177382549] [2023-08-31 04:03:59,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:03:59,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 04:03:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 04:03:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-31 04:03:59,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:03:59,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:03:59,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:59,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:03:59,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:59,198 INFO L130 PetriNetUnfolder]: 48/94 cut-off events. [2023-08-31 04:03:59,198 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2023-08-31 04:03:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 94 events. 48/94 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 6 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 402. Up to 41 conditions per place. [2023-08-31 04:03:59,208 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 27 selfloop transitions, 4 changer transitions 10/41 dead transitions. [2023-08-31 04:03:59,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 404 flow [2023-08-31 04:03:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 04:03:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 04:03:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 389 transitions. [2023-08-31 04:03:59,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440639269406393 [2023-08-31 04:03:59,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 389 transitions. [2023-08-31 04:03:59,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 389 transitions. [2023-08-31 04:03:59,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:59,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 389 transitions. [2023-08-31 04:03:59,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 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) [2023-08-31 04:03:59,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 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) [2023-08-31 04:03:59,213 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 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) [2023-08-31 04:03:59,213 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 247 flow. Second operand 6 states and 389 transitions. [2023-08-31 04:03:59,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 404 flow [2023-08-31 04:03:59,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 335 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-08-31 04:03:59,216 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 183 flow [2023-08-31 04:03:59,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-08-31 04:03:59,218 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-08-31 04:03:59,218 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 183 flow [2023-08-31 04:03:59,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:03:59,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:59,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:59,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 04:03:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:59,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:59,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash -587854281, now seen corresponding path program 3 times [2023-08-31 04:03:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:59,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151026708] [2023-08-31 04:03:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:59,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:03:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:03:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151026708] [2023-08-31 04:03:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151026708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:03:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450919231] [2023-08-31 04:03:59,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 04:03:59,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:59,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:03:59,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:03:59,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 04:03:59,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-31 04:03:59,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:03:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 04:03:59,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:03:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:03:59,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:03:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:03:59,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450919231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:03:59,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:03:59,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-08-31 04:03:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981136184] [2023-08-31 04:03:59,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:03:59,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 04:03:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:03:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 04:03:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-31 04:03:59,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:03:59,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 183 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 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) [2023-08-31 04:03:59,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:03:59,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:03:59,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:03:59,768 INFO L130 PetriNetUnfolder]: 65/123 cut-off events. [2023-08-31 04:03:59,768 INFO L131 PetriNetUnfolder]: For 790/790 co-relation queries the response was YES. [2023-08-31 04:03:59,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 123 events. 65/123 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 4 based on Foata normal form. 5/128 useless extension candidates. Maximal degree in co-relation 616. Up to 43 conditions per place. [2023-08-31 04:03:59,769 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 26 selfloop transitions, 12 changer transitions 8/46 dead transitions. [2023-08-31 04:03:59,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 433 flow [2023-08-31 04:03:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 04:03:59,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 04:03:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2023-08-31 04:03:59,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471624266144814 [2023-08-31 04:03:59,771 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2023-08-31 04:03:59,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2023-08-31 04:03:59,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:03:59,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2023-08-31 04:03:59,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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) [2023-08-31 04:03:59,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 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) [2023-08-31 04:03:59,773 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 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) [2023-08-31 04:03:59,773 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 183 flow. Second operand 7 states and 457 transitions. [2023-08-31 04:03:59,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 433 flow [2023-08-31 04:03:59,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 387 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-31 04:03:59,776 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 255 flow [2023-08-31 04:03:59,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-31 04:03:59,777 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-08-31 04:03:59,778 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 255 flow [2023-08-31 04:03:59,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 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) [2023-08-31 04:03:59,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:03:59,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:03:59,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 04:03:59,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:03:59,984 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:03:59,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:03:59,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1141489714, now seen corresponding path program 4 times [2023-08-31 04:03:59,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:03:59,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010617624] [2023-08-31 04:03:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:03:59,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:03:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:00,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010617624] [2023-08-31 04:04:00,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010617624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:04:00,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431530015] [2023-08-31 04:04:00,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 04:04:00,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:00,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:04:00,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:04:00,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 04:04:00,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 04:04:00,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:04:00,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 04:04:00,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:04:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:00,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:04:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:00,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431530015] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:04:00,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:04:00,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-31 04:04:00,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166647335] [2023-08-31 04:04:00,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:04:00,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 04:04:00,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 04:04:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-31 04:04:00,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:04:00,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 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) [2023-08-31 04:04:00,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:00,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:04:00,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:00,334 INFO L130 PetriNetUnfolder]: 75/144 cut-off events. [2023-08-31 04:04:00,334 INFO L131 PetriNetUnfolder]: For 596/596 co-relation queries the response was YES. [2023-08-31 04:04:00,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 144 events. 75/144 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 0 based on Foata normal form. 8/152 useless extension candidates. Maximal degree in co-relation 394. Up to 67 conditions per place. [2023-08-31 04:04:00,336 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 39 selfloop transitions, 18 changer transitions 10/67 dead transitions. [2023-08-31 04:04:00,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 607 flow [2023-08-31 04:04:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 04:04:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 04:04:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 838 transitions. [2023-08-31 04:04:00,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44151738672286617 [2023-08-31 04:04:00,338 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 838 transitions. [2023-08-31 04:04:00,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 838 transitions. [2023-08-31 04:04:00,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:00,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 838 transitions. [2023-08-31 04:04:00,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.46153846153847) internal successors, (838), 13 states have internal predecessors, (838), 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) [2023-08-31 04:04:00,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 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) [2023-08-31 04:04:00,342 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 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) [2023-08-31 04:04:00,342 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 255 flow. Second operand 13 states and 838 transitions. [2023-08-31 04:04:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 607 flow [2023-08-31 04:04:00,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 583 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-31 04:04:00,345 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 395 flow [2023-08-31 04:04:00,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-31 04:04:00,346 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2023-08-31 04:04:00,346 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 395 flow [2023-08-31 04:04:00,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 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) [2023-08-31 04:04:00,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:00,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:04:00,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 04:04:00,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:00,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:04:00,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -189341905, now seen corresponding path program 5 times [2023-08-31 04:04:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367941750] [2023-08-31 04:04:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:00,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367941750] [2023-08-31 04:04:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367941750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:04:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968418296] [2023-08-31 04:04:00,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 04:04:00,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:04:00,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:04:00,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 04:04:00,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 04:04:00,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:04:00,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 04:04:00,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:04:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:00,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:04:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968418296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:04:00,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:04:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-31 04:04:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375947689] [2023-08-31 04:04:00,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:04:00,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 04:04:00,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 04:04:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-31 04:04:00,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:04:00,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 395 flow. Second operand has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 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) [2023-08-31 04:04:00,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:00,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:04:00,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:00,866 INFO L130 PetriNetUnfolder]: 100/179 cut-off events. [2023-08-31 04:04:00,867 INFO L131 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2023-08-31 04:04:00,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 179 events. 100/179 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 522 event pairs, 0 based on Foata normal form. 12/191 useless extension candidates. Maximal degree in co-relation 914. Up to 113 conditions per place. [2023-08-31 04:04:00,868 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 50 selfloop transitions, 17 changer transitions 11/78 dead transitions. [2023-08-31 04:04:00,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 909 flow [2023-08-31 04:04:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 04:04:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 04:04:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 839 transitions. [2023-08-31 04:04:00,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44204425711275025 [2023-08-31 04:04:00,870 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 839 transitions. [2023-08-31 04:04:00,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 839 transitions. [2023-08-31 04:04:00,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:00,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 839 transitions. [2023-08-31 04:04:00,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.53846153846153) internal successors, (839), 13 states have internal predecessors, (839), 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) [2023-08-31 04:04:00,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 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) [2023-08-31 04:04:00,874 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 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) [2023-08-31 04:04:00,874 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 395 flow. Second operand 13 states and 839 transitions. [2023-08-31 04:04:00,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 909 flow [2023-08-31 04:04:00,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 835 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-31 04:04:00,879 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 546 flow [2023-08-31 04:04:00,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-08-31 04:04:00,880 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 56 predicate places. [2023-08-31 04:04:00,880 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 546 flow [2023-08-31 04:04:00,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.4) internal successors, (624), 10 states have internal predecessors, (624), 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) [2023-08-31 04:04:00,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:00,881 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:04:00,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-31 04:04:01,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:01,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:04:01,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1556551870, now seen corresponding path program 6 times [2023-08-31 04:04:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:01,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116315720] [2023-08-31 04:04:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:01,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 04:04:01,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:01,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116315720] [2023-08-31 04:04:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116315720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:04:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221969048] [2023-08-31 04:04:01,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 04:04:01,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:01,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:04:01,152 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:04:01,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 04:04:01,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-31 04:04:01,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 04:04:01,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 04:04:01,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:04:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 04:04:01,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 04:04:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221969048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:01,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 04:04:01,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-08-31 04:04:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967055522] [2023-08-31 04:04:01,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 04:04:01,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:01,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 04:04:01,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-31 04:04:01,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:04:01,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:04:01,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:01,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:04:01,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:01,332 INFO L130 PetriNetUnfolder]: 99/189 cut-off events. [2023-08-31 04:04:01,333 INFO L131 PetriNetUnfolder]: For 2064/2064 co-relation queries the response was YES. [2023-08-31 04:04:01,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 189 events. 99/189 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 591 event pairs, 2 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 1086. Up to 112 conditions per place. [2023-08-31 04:04:01,334 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 17 selfloop transitions, 1 changer transitions 53/71 dead transitions. [2023-08-31 04:04:01,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 851 flow [2023-08-31 04:04:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 04:04:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 04:04:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-08-31 04:04:01,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2023-08-31 04:04:01,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-08-31 04:04:01,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-08-31 04:04:01,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:01,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-08-31 04:04:01,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:04:01,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 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) [2023-08-31 04:04:01,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 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) [2023-08-31 04:04:01,337 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 546 flow. Second operand 6 states and 392 transitions. [2023-08-31 04:04:01,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 851 flow [2023-08-31 04:04:01,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 728 flow, removed 60 selfloop flow, removed 3 redundant places. [2023-08-31 04:04:01,343 INFO L231 Difference]: Finished difference. Result has 78 places, 17 transitions, 155 flow [2023-08-31 04:04:01,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=78, PETRI_TRANSITIONS=17} [2023-08-31 04:04:01,344 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 60 predicate places. [2023-08-31 04:04:01,344 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 17 transitions, 155 flow [2023-08-31 04:04:01,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 04:04:01,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:01,345 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:04:01,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 04:04:01,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-31 04:04:01,550 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:04:01,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1217237182, now seen corresponding path program 7 times [2023-08-31 04:04:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304459455] [2023-08-31 04:04:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 04:04:01,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:01,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304459455] [2023-08-31 04:04:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304459455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 04:04:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680407455] [2023-08-31 04:04:01,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 04:04:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:04:01,615 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 04:04:01,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 04:04:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:01,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-31 04:04:01,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 04:04:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:01,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 04:04:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 04:04:01,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680407455] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 04:04:01,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 04:04:01,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-08-31 04:04:01,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056971669] [2023-08-31 04:04:01,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 04:04:01,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 04:04:01,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 04:04:01,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-31 04:04:01,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-31 04:04:01,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 17 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 63.15384615384615) internal successors, (821), 13 states have internal predecessors, (821), 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) [2023-08-31 04:04:01,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:01,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-31 04:04:01,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:01,962 INFO L130 PetriNetUnfolder]: 20/56 cut-off events. [2023-08-31 04:04:01,962 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2023-08-31 04:04:01,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 56 events. 20/56 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 353. Up to 19 conditions per place. [2023-08-31 04:04:01,963 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-08-31 04:04:01,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 31 transitions, 359 flow [2023-08-31 04:04:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 04:04:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 04:04:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2023-08-31 04:04:01,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345509893455099 [2023-08-31 04:04:01,965 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2023-08-31 04:04:01,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2023-08-31 04:04:01,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:01,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2023-08-31 04:04:01,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 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) [2023-08-31 04:04:01,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 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) [2023-08-31 04:04:01,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 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) [2023-08-31 04:04:01,968 INFO L175 Difference]: Start difference. First operand has 78 places, 17 transitions, 155 flow. Second operand 9 states and 571 transitions. [2023-08-31 04:04:01,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 31 transitions, 359 flow [2023-08-31 04:04:01,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 219 flow, removed 52 selfloop flow, removed 24 redundant places. [2023-08-31 04:04:01,970 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-31 04:04:01,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-31 04:04:01,971 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 25 predicate places. [2023-08-31 04:04:01,971 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-31 04:04:01,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.15384615384615) internal successors, (821), 13 states have internal predecessors, (821), 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) [2023-08-31 04:04:01,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-31 04:04:01,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 04:04:01,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 04:04:01,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 04:04:02,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 04:04:02,178 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1] [2023-08-31 04:04:02,181 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 04:04:02,181 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 04:04:02,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 04:04:02 BasicIcfg [2023-08-31 04:04:02,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 04:04:02,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 04:04:02,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 04:04:02,183 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 04:04:02,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:03:54" (3/4) ... [2023-08-31 04:04:02,185 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 04:04:02,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 04:04:02,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 04:04:02,191 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-31 04:04:02,191 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 04:04:02,191 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 04:04:02,192 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 04:04:02,209 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 04:04:02,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 04:04:02,210 INFO L158 Benchmark]: Toolchain (without parser) took 7988.86ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 46.7MB in the beginning and 49.4MB in the end (delta: -2.7MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2023-08-31 04:04:02,210 INFO L158 Benchmark]: CDTParser took 1.57ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 04:04:02,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.04ms. Allocated memory is still 69.2MB. Free memory was 46.6MB in the beginning and 35.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 04:04:02,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.06ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 34.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 04:04:02,211 INFO L158 Benchmark]: Boogie Preprocessor took 13.31ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 33.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 04:04:02,211 INFO L158 Benchmark]: RCFGBuilder took 333.79ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 39.2MB in the end (delta: -6.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-31 04:04:02,211 INFO L158 Benchmark]: TraceAbstraction took 7453.20ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 38.6MB in the beginning and 52.5MB in the end (delta: -13.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2023-08-31 04:04:02,211 INFO L158 Benchmark]: Witness Printer took 26.60ms. Allocated memory is still 121.6MB. Free memory was 52.5MB in the beginning and 49.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 04:04:02,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.57ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.04ms. Allocated memory is still 69.2MB. Free memory was 46.6MB in the beginning and 35.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.06ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 34.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.31ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 33.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.79ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 39.2MB in the end (delta: -6.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7453.20ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 38.6MB in the beginning and 52.5MB in the end (delta: -13.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. * Witness Printer took 26.60ms. Allocated memory is still 121.6MB. Free memory was 52.5MB in the beginning and 49.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 70 PlacesBefore, 18 PlacesAfterwards, 69 TransitionsBefore, 13 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 67 TotalNumberOfCompositions, 388 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 388, independent: 388, independent conditional: 0, independent unconditional: 388, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 207, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 388, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 207, unknown conditional: 0, unknown unconditional: 207] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.4s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 673 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1771 IncrementalHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 16 mSDtfsCounter, 1771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=546occurred in iteration=9, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 265 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1932 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1002 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 34/77 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 04:04:02,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE