./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.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/parallel-misc-2-unrolled.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 b27d2c0de3bd785d7b0c7ad6e06bc0deeddc3f352acc333757e88f24286e9797 --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 01:55:01,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:55:01,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:55:01,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:55:01,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:55:01,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:55:01,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:55:01,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:55:01,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:55:01,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:55:01,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:55:01,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:55:01,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:55:01,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:55:01,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:55:01,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:55:01,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:55:01,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:55:01,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:55:01,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:55:01,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:55:01,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:55:01,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:55:01,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:55:01,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:55:01,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:55:01,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:55:01,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:55:01,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:55:01,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:55:01,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:55:01,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:55:01,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:55:01,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:55:01,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:55:01,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:55:01,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:55:01,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:55:01,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:55:01,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:55:01,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:55:01,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:55:01,834 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:55:01,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:55:01,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:55:01,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:55:01,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:55:01,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:55:01,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:55:01,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:55:01,837 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:55:01,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:55:01,838 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:55:01,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:55:01,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:55:01,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:55:01,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:55:01,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:55:01,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:55:01,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:55:01,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:55:01,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:55:01,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:55:01,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:55:01,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:55:01,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:55:01,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:55:01,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:55:01,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:55:01,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:55:01,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:55:01,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:55:01,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:55:01,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:55:01,843 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:55:01,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:55:01,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:55:01,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b27d2c0de3bd785d7b0c7ad6e06bc0deeddc3f352acc333757e88f24286e9797 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:55:02,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:55:02,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:55:02,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:55:02,155 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:55:02,155 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:55:02,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2023-08-31 01:55:03,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:55:03,397 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:55:03,398 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2023-08-31 01:55:03,407 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d27ac67/1449f6ae938549ee8031957f81ae6fca/FLAGcde11fcb3 [2023-08-31 01:55:03,418 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d27ac67/1449f6ae938549ee8031957f81ae6fca [2023-08-31 01:55:03,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:55:03,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:55:03,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:55:03,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:55:03,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:55:03,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6d39f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03, skipping insertion in model container [2023-08-31 01:55:03,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:55:03,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:55:03,602 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/parallel-misc-2-unrolled.wvr.c[2332,2345] [2023-08-31 01:55:03,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:55:03,618 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:55:03,644 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/parallel-misc-2-unrolled.wvr.c[2332,2345] [2023-08-31 01:55:03,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:55:03,651 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:55:03,653 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:55:03,659 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:55:03,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03 WrapperNode [2023-08-31 01:55:03,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:55:03,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:55:03,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:55:03,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:55:03,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,703 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-08-31 01:55:03,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:55:03,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:55:03,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:55:03,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:55:03,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:55:03,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:55:03,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:55:03,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:55:03,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (1/1) ... [2023-08-31 01:55:03,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:55:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:55:03,780 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 01:55:03,805 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 01:55:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:55:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:55:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:55:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:55:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:55:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:55:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:55:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:55:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:55:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:55:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:55:03,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:55:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:55:03,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:55:03,828 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 01:55:03,911 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:55:03,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:55:04,111 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:55:04,147 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:55:04,152 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-31 01:55:04,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:55:04 BoogieIcfgContainer [2023-08-31 01:55:04,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:55:04,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:55:04,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:55:04,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:55:04,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:55:03" (1/3) ... [2023-08-31 01:55:04,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a11b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:55:04, skipping insertion in model container [2023-08-31 01:55:04,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:03" (2/3) ... [2023-08-31 01:55:04,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a11b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:55:04, skipping insertion in model container [2023-08-31 01:55:04,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:55:04" (3/3) ... [2023-08-31 01:55:04,173 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2023-08-31 01:55:04,179 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:55:04,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:55:04,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:55:04,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:55:04,287 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 01:55:04,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 206 flow [2023-08-31 01:55:04,397 INFO L130 PetriNetUnfolder]: 6/93 cut-off events. [2023-08-31 01:55:04,398 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:55:04,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 6/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-31 01:55:04,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 95 transitions, 206 flow [2023-08-31 01:55:04,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 85 transitions, 182 flow [2023-08-31 01:55:04,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:55:04,427 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 85 transitions, 182 flow [2023-08-31 01:55:04,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 85 transitions, 182 flow [2023-08-31 01:55:04,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 182 flow [2023-08-31 01:55:04,463 INFO L130 PetriNetUnfolder]: 6/85 cut-off events. [2023-08-31 01:55:04,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:55:04,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 6/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-31 01:55:04,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-31 01:55:06,525 INFO L134 LiptonReduction]: Checked pairs total: 869 [2023-08-31 01:55:06,526 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-31 01:55:06,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:55:06,544 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;@39cdffa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:55:06,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 01:55:06,549 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-31 01:55:06,549 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:55:06,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:06,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:06,550 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 01:55:06,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1786021943, now seen corresponding path program 1 times [2023-08-31 01:55:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:06,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851759437] [2023-08-31 01:55:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:07,097 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 01:55:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851759437] [2023-08-31 01:55:07,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851759437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:07,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:07,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:55:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965788985] [2023-08-31 01:55:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:55:07,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:55:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:55:07,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 175 [2023-08-31 01:55:07,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 01:55:07,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:07,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 175 [2023-08-31 01:55:07,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:07,282 INFO L130 PetriNetUnfolder]: 60/110 cut-off events. [2023-08-31 01:55:07,282 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-31 01:55:07,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 110 events. 60/110 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 292 event pairs, 9 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 180. Up to 84 conditions per place. [2023-08-31 01:55:07,285 INFO L137 encePairwiseOnDemand]: 171/175 looper letters, 21 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2023-08-31 01:55:07,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 25 transitions, 121 flow [2023-08-31 01:55:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:55:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:55:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-31 01:55:07,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723809523809524 [2023-08-31 01:55:07,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-31 01:55:07,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-31 01:55:07,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:07,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-31 01:55:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 01:55:07,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 01:55:07,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 01:55:07,325 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 248 transitions. [2023-08-31 01:55:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 25 transitions, 121 flow [2023-08-31 01:55:07,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 25 transitions, 107 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:55:07,329 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2023-08-31 01:55:07,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2023-08-31 01:55:07,334 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-08-31 01:55:07,334 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2023-08-31 01:55:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 01:55:07,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:07,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:07,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:55:07,338 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 01:55:07,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1638161831, now seen corresponding path program 1 times [2023-08-31 01:55:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:07,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847361060] [2023-08-31 01:55:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:55:07,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:07,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847361060] [2023-08-31 01:55:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847361060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:07,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:07,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:55:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062358970] [2023-08-31 01:55:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:07,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:55:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:55:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:55:07,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 175 [2023-08-31 01:55:07,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 01:55:07,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:07,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 175 [2023-08-31 01:55:07,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:07,641 INFO L130 PetriNetUnfolder]: 84/153 cut-off events. [2023-08-31 01:55:07,641 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-31 01:55:07,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 153 events. 84/153 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 447 event pairs, 27 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 82. Up to 84 conditions per place. [2023-08-31 01:55:07,643 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 19 selfloop transitions, 7 changer transitions 7/33 dead transitions. [2023-08-31 01:55:07,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 33 transitions, 161 flow [2023-08-31 01:55:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:55:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:55:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-31 01:55:07,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2023-08-31 01:55:07,646 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-31 01:55:07,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-31 01:55:07,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:07,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-31 01:55:07,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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 01:55:07,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 01:55:07,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 01:55:07,650 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 4 states and 352 transitions. [2023-08-31 01:55:07,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 33 transitions, 161 flow [2023-08-31 01:55:07,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:55:07,652 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 96 flow [2023-08-31 01:55:07,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-31 01:55:07,653 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-31 01:55:07,653 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 96 flow [2023-08-31 01:55:07,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 01:55:07,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:07,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:55:07,654 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 01:55:07,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -237269058, now seen corresponding path program 1 times [2023-08-31 01:55:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005532107] [2023-08-31 01:55:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:07,763 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 01:55:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005532107] [2023-08-31 01:55:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005532107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:07,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:55:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971185775] [2023-08-31 01:55:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:55:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:55:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:55:07,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 175 [2023-08-31 01:55:07,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 01:55:07,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:07,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 175 [2023-08-31 01:55:07,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:07,927 INFO L130 PetriNetUnfolder]: 104/191 cut-off events. [2023-08-31 01:55:07,928 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2023-08-31 01:55:07,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 191 events. 104/191 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 632 event pairs, 9 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 287. Up to 66 conditions per place. [2023-08-31 01:55:07,930 INFO L137 encePairwiseOnDemand]: 168/175 looper letters, 32 selfloop transitions, 9 changer transitions 10/51 dead transitions. [2023-08-31 01:55:07,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 51 transitions, 306 flow [2023-08-31 01:55:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:55:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:55:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 392 transitions. [2023-08-31 01:55:07,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448 [2023-08-31 01:55:07,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 392 transitions. [2023-08-31 01:55:07,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 392 transitions. [2023-08-31 01:55:07,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:07,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 392 transitions. [2023-08-31 01:55:07,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.4) internal successors, (392), 5 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 01:55:07,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 01:55:07,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 01:55:07,938 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 96 flow. Second operand 5 states and 392 transitions. [2023-08-31 01:55:07,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 51 transitions, 306 flow [2023-08-31 01:55:07,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 51 transitions, 302 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-31 01:55:07,941 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 168 flow [2023-08-31 01:55:07,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-08-31 01:55:07,942 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2023-08-31 01:55:07,943 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 168 flow [2023-08-31 01:55:07,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 01:55:07,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:07,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:55:07,944 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 01:55:07,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 599928642, now seen corresponding path program 2 times [2023-08-31 01:55:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:07,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710770908] [2023-08-31 01:55:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:08,080 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 01:55:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710770908] [2023-08-31 01:55:08,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710770908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:08,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:55:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:55:08,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545661639] [2023-08-31 01:55:08,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:08,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:55:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:55:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:55:08,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 175 [2023-08-31 01:55:08,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 01:55:08,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:08,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 175 [2023-08-31 01:55:08,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:08,241 INFO L130 PetriNetUnfolder]: 91/169 cut-off events. [2023-08-31 01:55:08,242 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-31 01:55:08,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 169 events. 91/169 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 505 event pairs, 11 based on Foata normal form. 10/179 useless extension candidates. Maximal degree in co-relation 237. Up to 84 conditions per place. [2023-08-31 01:55:08,246 INFO L137 encePairwiseOnDemand]: 170/175 looper letters, 26 selfloop transitions, 11 changer transitions 1/38 dead transitions. [2023-08-31 01:55:08,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 286 flow [2023-08-31 01:55:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:55:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:55:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-31 01:55:08,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44142857142857145 [2023-08-31 01:55:08,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-31 01:55:08,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-31 01:55:08,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:08,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-31 01:55:08,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 01:55:08,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 01:55:08,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 01:55:08,256 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 168 flow. Second operand 4 states and 309 transitions. [2023-08-31 01:55:08,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 286 flow [2023-08-31 01:55:08,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 280 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-31 01:55:08,262 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 216 flow [2023-08-31 01:55:08,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-31 01:55:08,263 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2023-08-31 01:55:08,263 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 216 flow [2023-08-31 01:55:08,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 01:55:08,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:08,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:08,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:55:08,264 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 01:55:08,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash -227819690, now seen corresponding path program 1 times [2023-08-31 01:55:08,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:08,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714186833] [2023-08-31 01:55:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:08,523 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 01:55:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:08,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714186833] [2023-08-31 01:55:08,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714186833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:55:08,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220203239] [2023-08-31 01:55:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:08,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:08,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:55:08,533 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 01:55:08,540 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 01:55:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:08,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-31 01:55:08,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:55:08,758 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 01:55:08,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:55:08,823 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 01:55:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220203239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:55:08,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:55:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-08-31 01:55:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631932206] [2023-08-31 01:55:08,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:55:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:55:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:55:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:55:08,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 175 [2023-08-31 01:55:08,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 77.5) internal successors, (465), 6 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:08,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:08,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 175 [2023-08-31 01:55:08,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:09,044 INFO L130 PetriNetUnfolder]: 123/226 cut-off events. [2023-08-31 01:55:09,045 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-08-31 01:55:09,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 226 events. 123/226 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 740 event pairs, 16 based on Foata normal form. 1/227 useless extension candidates. Maximal degree in co-relation 315. Up to 84 conditions per place. [2023-08-31 01:55:09,047 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 26 selfloop transitions, 17 changer transitions 12/55 dead transitions. [2023-08-31 01:55:09,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 470 flow [2023-08-31 01:55:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:55:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:55:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 485 transitions. [2023-08-31 01:55:09,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2023-08-31 01:55:09,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 485 transitions. [2023-08-31 01:55:09,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 485 transitions. [2023-08-31 01:55:09,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:09,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 485 transitions. [2023-08-31 01:55:09,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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 01:55:09,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 01:55:09,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 01:55:09,055 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 216 flow. Second operand 6 states and 485 transitions. [2023-08-31 01:55:09,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 470 flow [2023-08-31 01:55:09,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 444 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 01:55:09,059 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 327 flow [2023-08-31 01:55:09,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-31 01:55:09,061 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2023-08-31 01:55:09,061 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 327 flow [2023-08-31 01:55:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.5) internal successors, (465), 6 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:55:09,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:09,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:09,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 01:55:09,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:09,267 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 01:55:09,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -66515524, now seen corresponding path program 2 times [2023-08-31 01:55:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710535992] [2023-08-31 01:55:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:09,505 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 01:55:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710535992] [2023-08-31 01:55:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710535992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:55:09,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001325833] [2023-08-31 01:55:09,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:55:09,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:09,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:55:09,513 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 01:55:09,516 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 01:55:09,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 01:55:09,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:55:09,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-31 01:55:09,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:55:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:55:09,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:55:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001325833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:55:09,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:55:09,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-08-31 01:55:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800496067] [2023-08-31 01:55:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:55:09,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:55:09,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:55:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:55:09,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 175 [2023-08-31 01:55:09,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:55:09,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:09,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 175 [2023-08-31 01:55:09,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:09,744 INFO L130 PetriNetUnfolder]: 140/260 cut-off events. [2023-08-31 01:55:09,744 INFO L131 PetriNetUnfolder]: For 942/942 co-relation queries the response was YES. [2023-08-31 01:55:09,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 260 events. 140/260 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 901 event pairs, 32 based on Foata normal form. 1/261 useless extension candidates. Maximal degree in co-relation 769. Up to 179 conditions per place. [2023-08-31 01:55:09,747 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 37 selfloop transitions, 17 changer transitions 3/57 dead transitions. [2023-08-31 01:55:09,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 584 flow [2023-08-31 01:55:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:55:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:55:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-31 01:55:09,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948571428571429 [2023-08-31 01:55:09,749 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-31 01:55:09,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-31 01:55:09,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:09,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-31 01:55:09,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 01:55:09,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 01:55:09,752 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 01:55:09,752 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 327 flow. Second operand 5 states and 433 transitions. [2023-08-31 01:55:09,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 584 flow [2023-08-31 01:55:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 534 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-31 01:55:09,757 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 465 flow [2023-08-31 01:55:09,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-31 01:55:09,758 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 26 predicate places. [2023-08-31 01:55:09,758 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 465 flow [2023-08-31 01:55:09,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:55:09,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:55:09,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:55:09,766 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 01:55:09,966 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,SelfDestructingSolverStorable5 [2023-08-31 01:55:09,966 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 01:55:09,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:55:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1627690428, now seen corresponding path program 3 times [2023-08-31 01:55:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:55:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723641569] [2023-08-31 01:55:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:55:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:55:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:55:10,180 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 01:55:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:55:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723641569] [2023-08-31 01:55:10,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723641569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:55:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159361770] [2023-08-31 01:55:10,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:55:10,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:10,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:55:10,185 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 01:55:10,188 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 01:55:10,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 01:55:10,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:55:10,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-31 01:55:10,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:55:10,295 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 01:55:10,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:55:10,325 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 01:55:10,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159361770] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:55:10,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:55:10,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-31 01:55:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407416794] [2023-08-31 01:55:10,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:55:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 01:55:10,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:55:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 01:55:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 01:55:10,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 175 [2023-08-31 01:55:10,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 465 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 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 01:55:10,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:55:10,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 175 [2023-08-31 01:55:10,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:55:10,484 INFO L130 PetriNetUnfolder]: 140/259 cut-off events. [2023-08-31 01:55:10,484 INFO L131 PetriNetUnfolder]: For 1091/1091 co-relation queries the response was YES. [2023-08-31 01:55:10,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 259 events. 140/259 cut-off events. For 1091/1091 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 911 event pairs, 38 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 955. Up to 137 conditions per place. [2023-08-31 01:55:10,486 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2023-08-31 01:55:10,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 642 flow [2023-08-31 01:55:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:55:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:55:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2023-08-31 01:55:10,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838095238095238 [2023-08-31 01:55:10,488 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2023-08-31 01:55:10,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2023-08-31 01:55:10,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:55:10,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2023-08-31 01:55:10,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 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 01:55:10,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 01:55:10,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 01:55:10,492 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 465 flow. Second operand 6 states and 508 transitions. [2023-08-31 01:55:10,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 642 flow [2023-08-31 01:55:10,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 626 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-31 01:55:10,498 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-31 01:55:10,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-31 01:55:10,499 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2023-08-31 01:55:10,499 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-31 01:55:10,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 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 01:55:10,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-31 01:55:10,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 01:55:10,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 01:55:10,509 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 01:55:10,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:55:10,707 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2023-08-31 01:55:10,710 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:55:10,710 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:55:10,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:55:10 BasicIcfg [2023-08-31 01:55:10,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:55:10,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:55:10,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:55:10,714 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:55:10,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:55:04" (3/4) ... [2023-08-31 01:55:10,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:55:10,721 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:55:10,721 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:55:10,725 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-31 01:55:10,725 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:55:10,725 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:55:10,725 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:55:10,763 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:55:10,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:55:10,764 INFO L158 Benchmark]: Toolchain (without parser) took 7343.14ms. Allocated memory was 73.4MB in the beginning and 134.2MB in the end (delta: 60.8MB). Free memory was 51.1MB in the beginning and 96.1MB in the end (delta: -45.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-08-31 01:55:10,764 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:55:10,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.07ms. Allocated memory is still 73.4MB. Free memory was 50.8MB in the beginning and 39.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 01:55:10,765 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.86ms. Allocated memory is still 73.4MB. Free memory was 39.9MB in the beginning and 38.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:55:10,765 INFO L158 Benchmark]: Boogie Preprocessor took 39.95ms. Allocated memory is still 73.4MB. Free memory was 38.3MB in the beginning and 37.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:55:10,765 INFO L158 Benchmark]: RCFGBuilder took 408.83ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 40.5MB in the end (delta: -3.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-08-31 01:55:10,766 INFO L158 Benchmark]: TraceAbstraction took 6557.57ms. Allocated memory was 73.4MB in the beginning and 134.2MB in the end (delta: 60.8MB). Free memory was 39.9MB in the beginning and 98.9MB in the end (delta: -58.9MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2023-08-31 01:55:10,766 INFO L158 Benchmark]: Witness Printer took 49.98ms. Allocated memory is still 134.2MB. Free memory was 98.9MB in the beginning and 96.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:55:10,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.07ms. Allocated memory is still 73.4MB. Free memory was 50.8MB in the beginning and 39.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.86ms. Allocated memory is still 73.4MB. Free memory was 39.9MB in the beginning and 38.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.95ms. Allocated memory is still 73.4MB. Free memory was 38.3MB in the beginning and 37.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 408.83ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 40.5MB in the end (delta: -3.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6557.57ms. Allocated memory was 73.4MB in the beginning and 134.2MB in the end (delta: 60.8MB). Free memory was 39.9MB in the beginning and 98.9MB in the end (delta: -58.9MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Witness Printer took 49.98ms. Allocated memory is still 134.2MB. Free memory was 98.9MB in the beginning and 96.1MB in the end (delta: 2.7MB). 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: 2.1s, 86 PlacesBefore, 20 PlacesAfterwards, 85 TransitionsBefore, 15 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 80 TotalNumberOfCompositions, 869 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 745, independent: 721, independent conditional: 0, independent unconditional: 721, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 401, independent: 394, independent conditional: 0, independent unconditional: 394, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 745, independent: 327, independent conditional: 0, independent unconditional: 327, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 401, unknown conditional: 0, unknown unconditional: 401] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: 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, 116 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: 6.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 778 IncrementalHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 44 mSDtfsCounter, 778 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=465occurred in iteration=6, InterpolantAutomatonStates: 33, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 1723 SizeOfPredicates, 12 NumberOfNonLiveVariables, 363 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 9/19 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 01:55:10,797 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