./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-min-le-max.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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:37:13,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:37:13,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:37:13,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:37:13,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:37:13,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:37:13,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:37:13,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:37:13,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:37:13,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:37:13,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:37:13,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:37:13,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:37:13,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:37:13,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:37:13,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:37:13,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:37:13,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:37:13,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:37:13,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:37:13,873 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:37:13,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:37:13,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:37:13,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:37:13,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:37:13,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:37:13,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:37:13,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:37:13,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:37:13,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:37:13,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:37:13,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:37:13,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:37:13,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:37:13,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:37:13,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:37:13,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:37:13,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:37:13,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:37:13,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:37:13,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:37:13,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:37:13,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:37:13,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:37:13,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:37:13,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:37:13,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:37:13,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:37:13,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:37:13,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:37:13,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:37:13,913 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:37:13,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:37:13,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:37:13,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:37:13,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:37:13,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:37:13,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:37:13,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:37:13,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:37:13,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:37:13,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:37:13,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:37:13,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:37:13,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:37:13,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:37:13,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:37:13,917 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:37:13,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:37:13,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:37:13,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2022-07-19 21:37:14,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:37:14,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:37:14,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:37:14,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:37:14,145 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:37:14,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-07-19 21:37:14,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28792e11b/6f78f893c1a94993bc3ea0e8edc2681a/FLAG71894e8ba [2022-07-19 21:37:14,557 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:37:14,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2022-07-19 21:37:14,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28792e11b/6f78f893c1a94993bc3ea0e8edc2681a/FLAG71894e8ba [2022-07-19 21:37:14,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28792e11b/6f78f893c1a94993bc3ea0e8edc2681a [2022-07-19 21:37:14,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:37:14,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:37:14,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:37:14,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:37:14,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:37:14,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112aad9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14, skipping insertion in model container [2022-07-19 21:37:14,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:37:14,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:37:14,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-07-19 21:37:14,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:37:14,782 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:37:14,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-07-19 21:37:14,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:37:14,828 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:37:14,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14 WrapperNode [2022-07-19 21:37:14,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:37:14,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:37:14,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:37:14,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:37:14,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,865 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-07-19 21:37:14,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:37:14,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:37:14,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:37:14,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:37:14,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:37:14,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:37:14,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:37:14,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:37:14,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (1/1) ... [2022-07-19 21:37:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:37:14,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:14,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:37:14,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:37:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:37:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:37:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:37:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:37:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:37:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:37:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:37:15,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:37:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:37:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:37:15,018 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:37:15,076 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:37:15,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:37:15,348 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:37:15,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:37:15,403 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 21:37:15,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:37:15 BoogieIcfgContainer [2022-07-19 21:37:15,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:37:15,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:37:15,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:37:15,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:37:15,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:37:14" (1/3) ... [2022-07-19 21:37:15,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95fd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:37:15, skipping insertion in model container [2022-07-19 21:37:15,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:37:14" (2/3) ... [2022-07-19 21:37:15,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95fd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:37:15, skipping insertion in model container [2022-07-19 21:37:15,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:37:15" (3/3) ... [2022-07-19 21:37:15,411 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-07-19 21:37:15,415 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:37:15,420 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:37:15,421 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:37:15,421 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:37:15,458 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:37:15,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2022-07-19 21:37:15,522 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2022-07-19 21:37:15,522 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:37:15,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-07-19 21:37:15,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 149 transitions, 322 flow [2022-07-19 21:37:15,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 135 transitions, 288 flow [2022-07-19 21:37:15,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:37:15,548 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57f3e1df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2faf3a0c [2022-07-19 21:37:15,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:37:15,572 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2022-07-19 21:37:15,572 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:37:15,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:15,573 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:15,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1934954288, now seen corresponding path program 1 times [2022-07-19 21:37:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:15,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738331624] [2022-07-19 21:37:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:15,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:15,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738331624] [2022-07-19 21:37:15,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738331624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:37:15,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:37:15,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:37:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363344756] [2022-07-19 21:37:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:37:15,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:37:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:37:15,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 149 [2022-07-19 21:37:15,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:15,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:15,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 149 [2022-07-19 21:37:15,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:15,865 INFO L129 PetriNetUnfolder]: 20/193 cut-off events. [2022-07-19 21:37:15,867 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2022-07-19 21:37:15,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 193 events. 20/193 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 331 event pairs, 7 based on Foata normal form. 22/196 useless extension candidates. Maximal degree in co-relation 141. Up to 32 conditions per place. [2022-07-19 21:37:15,870 INFO L132 encePairwiseOnDemand]: 142/149 looper letters, 8 selfloop transitions, 0 changer transitions 4/128 dead transitions. [2022-07-19 21:37:15,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 290 flow [2022-07-19 21:37:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:37:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:37:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2022-07-19 21:37:15,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9429530201342282 [2022-07-19 21:37:15,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2022-07-19 21:37:15,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2022-07-19 21:37:15,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:15,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2022-07-19 21:37:15,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:15,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:15,891 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:15,892 INFO L186 Difference]: Start difference. First operand has 135 places, 135 transitions, 288 flow. Second operand 2 states and 281 transitions. [2022-07-19 21:37:15,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 290 flow [2022-07-19 21:37:15,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 278 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:37:15,898 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 254 flow [2022-07-19 21:37:15,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-07-19 21:37:15,901 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, -5 predicate places. [2022-07-19 21:37:15,901 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 254 flow [2022-07-19 21:37:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:15,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:15,902 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:37:15,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1966050017, now seen corresponding path program 1 times [2022-07-19 21:37:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:15,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039382368] [2022-07-19 21:37:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039382368] [2022-07-19 21:37:16,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039382368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:37:16,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:37:16,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:37:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174861857] [2022-07-19 21:37:16,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:16,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:37:16,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:16,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:37:16,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:37:16,108 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 149 [2022-07-19 21:37:16,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:16,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 149 [2022-07-19 21:37:16,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:16,248 INFO L129 PetriNetUnfolder]: 155/542 cut-off events. [2022-07-19 21:37:16,248 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:37:16,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 542 events. 155/542 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2725 event pairs, 85 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 860. Up to 159 conditions per place. [2022-07-19 21:37:16,255 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 38 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2022-07-19 21:37:16,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 360 flow [2022-07-19 21:37:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:37:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:37:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2022-07-19 21:37:16,263 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7404921700223713 [2022-07-19 21:37:16,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2022-07-19 21:37:16,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2022-07-19 21:37:16,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:16,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2022-07-19 21:37:16,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,270 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 254 flow. Second operand 6 states and 662 transitions. [2022-07-19 21:37:16,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 360 flow [2022-07-19 21:37:16,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:37:16,273 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 272 flow [2022-07-19 21:37:16,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2022-07-19 21:37:16,275 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, -3 predicate places. [2022-07-19 21:37:16,276 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 272 flow [2022-07-19 21:37:16,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,277 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:16,277 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:16,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:37:16,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1698714529, now seen corresponding path program 1 times [2022-07-19 21:37:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139484081] [2022-07-19 21:37:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:16,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139484081] [2022-07-19 21:37:16,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139484081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:37:16,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:37:16,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:37:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085977612] [2022-07-19 21:37:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:37:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:37:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:37:16,452 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-07-19 21:37:16,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:16,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-07-19 21:37:16,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:16,642 INFO L129 PetriNetUnfolder]: 175/543 cut-off events. [2022-07-19 21:37:16,655 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-07-19 21:37:16,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 543 events. 175/543 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2391 event pairs, 108 based on Foata normal form. 9/476 useless extension candidates. Maximal degree in co-relation 972. Up to 261 conditions per place. [2022-07-19 21:37:16,659 INFO L132 encePairwiseOnDemand]: 140/149 looper letters, 29 selfloop transitions, 6 changer transitions 14/143 dead transitions. [2022-07-19 21:37:16,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 416 flow [2022-07-19 21:37:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:37:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:37:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 937 transitions. [2022-07-19 21:37:16,661 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7860738255033557 [2022-07-19 21:37:16,661 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 937 transitions. [2022-07-19 21:37:16,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 937 transitions. [2022-07-19 21:37:16,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:16,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 937 transitions. [2022-07-19 21:37:16,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.125) internal successors, (937), 8 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,666 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 149.0) internal successors, (1341), 9 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,667 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 272 flow. Second operand 8 states and 937 transitions. [2022-07-19 21:37:16,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 416 flow [2022-07-19 21:37:16,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 143 transitions, 405 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:37:16,670 INFO L242 Difference]: Finished difference. Result has 138 places, 126 transitions, 288 flow [2022-07-19 21:37:16,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2022-07-19 21:37:16,672 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-07-19 21:37:16,672 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 288 flow [2022-07-19 21:37:16,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:16,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:16,673 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:16,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:37:16,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1074626539, now seen corresponding path program 1 times [2022-07-19 21:37:16,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:16,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363422627] [2022-07-19 21:37:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:16,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:16,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363422627] [2022-07-19 21:37:16,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363422627] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:16,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552844718] [2022-07-19 21:37:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:16,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:16,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:16,822 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) [2022-07-19 21:37:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:37:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:16,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:37:16,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:17,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:37:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:17,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552844718] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:17,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:37:17,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-19 21:37:17,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666726686] [2022-07-19 21:37:17,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:37:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:37:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:37:17,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:37:17,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 149 [2022-07-19 21:37:17,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:17,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:17,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 149 [2022-07-19 21:37:17,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:17,321 INFO L129 PetriNetUnfolder]: 129/490 cut-off events. [2022-07-19 21:37:17,322 INFO L130 PetriNetUnfolder]: For 62/76 co-relation queries the response was YES. [2022-07-19 21:37:17,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 490 events. 129/490 cut-off events. For 62/76 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2435 event pairs, 52 based on Foata normal form. 14/475 useless extension candidates. Maximal degree in co-relation 844. Up to 133 conditions per place. [2022-07-19 21:37:17,325 INFO L132 encePairwiseOnDemand]: 141/149 looper letters, 31 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2022-07-19 21:37:17,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 384 flow [2022-07-19 21:37:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:37:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:37:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2022-07-19 21:37:17,327 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7813998082454459 [2022-07-19 21:37:17,327 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2022-07-19 21:37:17,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2022-07-19 21:37:17,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:17,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2022-07-19 21:37:17,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:17,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:17,332 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:17,332 INFO L186 Difference]: Start difference. First operand has 138 places, 126 transitions, 288 flow. Second operand 7 states and 815 transitions. [2022-07-19 21:37:17,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 384 flow [2022-07-19 21:37:17,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-07-19 21:37:17,335 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 307 flow [2022-07-19 21:37:17,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-07-19 21:37:17,336 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 4 predicate places. [2022-07-19 21:37:17,336 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 307 flow [2022-07-19 21:37:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:17,337 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:37:17,337 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:37:17,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:37:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:17,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:37:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:37:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -856593035, now seen corresponding path program 1 times [2022-07-19 21:37:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:37:17,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893115287] [2022-07-19 21:37:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:17,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:37:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:37:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893115287] [2022-07-19 21:37:17,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893115287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:37:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870764624] [2022-07-19 21:37:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:37:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:37:17,764 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) [2022-07-19 21:37:17,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:37:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:37:17,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 21:37:17,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:37:17,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:37:18,024 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 21:37:18,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-19 21:37:18,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:37:18,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:37:18,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-07-19 21:37:18,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:37:18,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-07-19 21:37:18,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-07-19 21:37:18,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 21:37:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:37:18,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:37:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:37:18,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870764624] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:37:18,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:37:18,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 9] total 33 [2022-07-19 21:37:18,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448001275] [2022-07-19 21:37:18,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:37:18,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-19 21:37:18,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:37:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-19 21:37:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 21:37:18,969 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 149 [2022-07-19 21:37:18,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 307 flow. Second operand has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:18,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:37:18,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 149 [2022-07-19 21:37:18,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:37:21,495 INFO L129 PetriNetUnfolder]: 2340/4572 cut-off events. [2022-07-19 21:37:21,495 INFO L130 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2022-07-19 21:37:21,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 4572 events. 2340/4572 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32598 event pairs, 149 based on Foata normal form. 4/4535 useless extension candidates. Maximal degree in co-relation 10010. Up to 469 conditions per place. [2022-07-19 21:37:21,507 INFO L132 encePairwiseOnDemand]: 121/149 looper letters, 0 selfloop transitions, 0 changer transitions 345/345 dead transitions. [2022-07-19 21:37:21,507 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 345 transitions, 1545 flow [2022-07-19 21:37:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-19 21:37:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-07-19 21:37:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2611 transitions. [2022-07-19 21:37:21,513 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.4172259507829978 [2022-07-19 21:37:21,513 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2611 transitions. [2022-07-19 21:37:21,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2611 transitions. [2022-07-19 21:37:21,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:37:21,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2611 transitions. [2022-07-19 21:37:21,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 62.166666666666664) internal successors, (2611), 42 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:21,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:21,565 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 149.0) internal successors, (6407), 43 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:21,565 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 307 flow. Second operand 42 states and 2611 transitions. [2022-07-19 21:37:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 345 transitions, 1545 flow [2022-07-19 21:37:21,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 345 transitions, 1514 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:37:21,571 INFO L242 Difference]: Finished difference. Result has 173 places, 0 transitions, 0 flow [2022-07-19 21:37:21,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=0, PETRI_PLACES=173, PETRI_TRANSITIONS=0} [2022-07-19 21:37:21,572 INFO L279 CegarLoopForPetriNet]: 135 programPoint places, 38 predicate places. [2022-07-19 21:37:21,572 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 0 transitions, 0 flow [2022-07-19 21:37:21,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 60.03030303030303) internal successors, (1981), 33 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:37:21,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 21:37:21,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-19 21:37:21,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:37:21,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-19 21:37:21,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:37:21,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:37:21,794 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 21:37:21,796 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:37:21,796 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:37:21,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:37:21 BasicIcfg [2022-07-19 21:37:21,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:37:21,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:37:21,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:37:21,800 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:37:21,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:37:15" (3/4) ... [2022-07-19 21:37:21,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:37:21,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:37:21,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:37:21,808 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-19 21:37:21,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-19 21:37:21,813 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:37:21,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:37:21,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:37:21,841 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:37:21,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:37:21,842 INFO L158 Benchmark]: Toolchain (without parser) took 7258.33ms. Allocated memory was 125.8MB in the beginning and 237.0MB in the end (delta: 111.1MB). Free memory was 100.4MB in the beginning and 172.4MB in the end (delta: -72.0MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,842 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:37:21,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.59ms. Allocated memory is still 125.8MB. Free memory was 100.2MB in the beginning and 98.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.30ms. Allocated memory is still 125.8MB. Free memory was 98.1MB in the beginning and 96.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,843 INFO L158 Benchmark]: Boogie Preprocessor took 39.39ms. Allocated memory is still 125.8MB. Free memory was 96.0MB in the beginning and 94.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,843 INFO L158 Benchmark]: RCFGBuilder took 498.41ms. Allocated memory is still 125.8MB. Free memory was 94.8MB in the beginning and 78.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,843 INFO L158 Benchmark]: TraceAbstraction took 6394.10ms. Allocated memory was 125.8MB in the beginning and 237.0MB in the end (delta: 111.1MB). Free memory was 77.1MB in the beginning and 175.1MB in the end (delta: -98.0MB). Peak memory consumption was 109.5MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,843 INFO L158 Benchmark]: Witness Printer took 41.26ms. Allocated memory is still 237.0MB. Free memory was 175.1MB in the beginning and 172.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:37:21,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.59ms. Allocated memory is still 125.8MB. Free memory was 100.2MB in the beginning and 98.1MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.30ms. Allocated memory is still 125.8MB. Free memory was 98.1MB in the beginning and 96.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.39ms. Allocated memory is still 125.8MB. Free memory was 96.0MB in the beginning and 94.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.41ms. Allocated memory is still 125.8MB. Free memory was 94.8MB in the beginning and 78.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6394.10ms. Allocated memory was 125.8MB in the beginning and 237.0MB in the end (delta: 111.1MB). Free memory was 77.1MB in the beginning and 175.1MB in the end (delta: -98.0MB). Peak memory consumption was 109.5MB. Max. memory is 16.1GB. * Witness Printer took 41.26ms. Allocated memory is still 237.0MB. Free memory was 175.1MB in the beginning and 172.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: 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 7 procedures, 165 locations, 4 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: 6.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1320 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1320 mSDsluCounter, 859 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 986 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1306 IncrementalHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 98 mSDtfsCounter, 1306 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1046 ConstructedInterpolants, 0 QuantifiedInterpolants, 3863 SizeOfPredicates, 32 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/16 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! [2022-07-19 21:37:21,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE