./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-array.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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:06:38,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:06:38,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:06:38,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:06:38,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:06:38,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:06:38,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:06:38,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:06:38,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:06:38,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:06:38,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:06:38,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:06:38,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:06:38,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:06:38,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:06:38,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:06:38,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:06:38,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:06:38,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:06:38,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:06:38,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:06:38,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:06:38,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:06:38,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:06:38,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:06:38,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:06:38,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:06:38,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:06:38,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:06:38,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:06:38,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:06:38,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:06:38,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:06:38,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:06:38,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:06:38,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:06:38,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:06:38,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:06:38,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:06:38,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:06:38,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:06:38,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:06:38,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:06:38,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:06:38,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:06:38,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:06:38,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:06:38,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:06:38,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:06:38,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:06:38,784 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:06:38,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:06:38,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:06:38,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:06:38,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:06:38,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:06:38,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:06:38,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:06:38,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:06:38,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:06:38,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:06:38,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:06:38,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:06:38,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:06:38,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:06:38,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:06:38,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:06:38,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:06:38,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:06:38,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:06:38,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:06:38,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:06:38,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:06:38,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:06:38,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:06:38,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2021-12-28 03:06:39,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:06:39,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:06:39,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:06:39,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:06:39,139 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:06:39,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2021-12-28 03:06:39,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ff94727/bb4f9f6e53e64a179a521b2d3e0c1963/FLAG1bad2c69f [2021-12-28 03:06:39,574 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:06:39,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2021-12-28 03:06:39,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ff94727/bb4f9f6e53e64a179a521b2d3e0c1963/FLAG1bad2c69f [2021-12-28 03:06:39,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ff94727/bb4f9f6e53e64a179a521b2d3e0c1963 [2021-12-28 03:06:39,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:06:39,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:06:39,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:06:39,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:06:39,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:06:39,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6e3972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39, skipping insertion in model container [2021-12-28 03:06:39,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:06:39,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:06:39,804 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-array.wvr.c[2553,2566] [2021-12-28 03:06:39,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:06:39,813 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:06:39,826 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-array.wvr.c[2553,2566] [2021-12-28 03:06:39,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:06:39,837 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:06:39,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39 WrapperNode [2021-12-28 03:06:39,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:06:39,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:06:39,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:06:39,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:06:39,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,880 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2021-12-28 03:06:39,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:06:39,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:06:39,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:06:39,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:06:39,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:06:39,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:06:39,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:06:39,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:06:39,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (1/1) ... [2021-12-28 03:06:39,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:06:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:06:39,950 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) [2021-12-28 03:06:39,999 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 [2021-12-28 03:06:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:06:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:06:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:06:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:06:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:06:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:06:40,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:06:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:06:40,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:06:40,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:06:40,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:06:40,025 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:06:40,081 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:06:40,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:06:40,370 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:06:40,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:06:40,439 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-28 03:06:40,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:06:40 BoogieIcfgContainer [2021-12-28 03:06:40,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:06:40,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:06:40,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:06:40,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:06:40,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:06:39" (1/3) ... [2021-12-28 03:06:40,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d83d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:06:40, skipping insertion in model container [2021-12-28 03:06:40,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:39" (2/3) ... [2021-12-28 03:06:40,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d83d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:06:40, skipping insertion in model container [2021-12-28 03:06:40,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:06:40" (3/3) ... [2021-12-28 03:06:40,448 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2021-12-28 03:06:40,453 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:06:40,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:06:40,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:06:40,453 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:06:40,500 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,500 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,506 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,506 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,506 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,509 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,512 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,515 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,517 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,518 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,518 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,519 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,519 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,521 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,521 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,521 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,522 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,522 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,524 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,525 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,525 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,525 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,525 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,527 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,529 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,532 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,533 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,533 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,534 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,534 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,534 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,535 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,538 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,539 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,539 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,540 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,541 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,544 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,544 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,545 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,545 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,545 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,545 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,546 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,546 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,546 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,547 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,550 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,551 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,552 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,552 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,552 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,552 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,553 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,553 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,553 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,554 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:40,558 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-28 03:06:40,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:06:40,617 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:06:40,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 03:06:40,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2021-12-28 03:06:40,706 INFO L129 PetriNetUnfolder]: 12/150 cut-off events. [2021-12-28 03:06:40,706 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:06:40,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2021-12-28 03:06:40,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2021-12-28 03:06:40,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2021-12-28 03:06:40,750 INFO L129 PetriNetUnfolder]: 12/138 cut-off events. [2021-12-28 03:06:40,751 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:06:40,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:40,752 INFO L254 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] [2021-12-28 03:06:40,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -977644638, now seen corresponding path program 1 times [2021-12-28 03:06:40,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:40,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202256723] [2021-12-28 03:06:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:40,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:40,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:40,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202256723] [2021-12-28 03:06:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202256723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:06:40,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:06:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:06:40,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538686630] [2021-12-28 03:06:40,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:06:40,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:06:40,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:06:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:06:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:06:40,991 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2021-12-28 03:06:40,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2021-12-28 03:06:40,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:06:40,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2021-12-28 03:06:40,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:06:41,086 INFO L129 PetriNetUnfolder]: 41/264 cut-off events. [2021-12-28 03:06:41,087 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2021-12-28 03:06:41,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 695 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2021-12-28 03:06:41,095 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2021-12-28 03:06:41,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2021-12-28 03:06:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:06:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-28 03:06:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2021-12-28 03:06:41,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2021-12-28 03:06:41,111 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2021-12-28 03:06:41,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2021-12-28 03:06:41,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:06:41,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2021-12-28 03:06:41,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 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) [2021-12-28 03:06:41,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-12-28 03:06:41,120 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-12-28 03:06:41,122 INFO L186 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2021-12-28 03:06:41,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2021-12-28 03:06:41,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-28 03:06:41,128 INFO L242 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2021-12-28 03:06:41,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2021-12-28 03:06:41,132 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2021-12-28 03:06:41,132 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2021-12-28 03:06:41,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2021-12-28 03:06:41,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:41,133 INFO L254 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] [2021-12-28 03:06:41,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:06:41,133 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1446866490, now seen corresponding path program 1 times [2021-12-28 03:06:41,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:41,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747557163] [2021-12-28 03:06:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:41,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:41,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:41,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747557163] [2021-12-28 03:06:41,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747557163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:06:41,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:06:41,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:06:41,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063251723] [2021-12-28 03:06:41,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:06:41,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:06:41,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:06:41,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:06:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:06:41,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2021-12-28 03:06:41,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 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) [2021-12-28 03:06:41,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:06:41,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2021-12-28 03:06:41,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:06:41,695 INFO L129 PetriNetUnfolder]: 295/678 cut-off events. [2021-12-28 03:06:41,695 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-12-28 03:06:41,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 678 events. 295/678 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2975 event pairs, 167 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 1134. Up to 421 conditions per place. [2021-12-28 03:06:41,716 INFO L132 encePairwiseOnDemand]: 143/153 looper letters, 44 selfloop transitions, 6 changer transitions 4/135 dead transitions. [2021-12-28 03:06:41,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 384 flow [2021-12-28 03:06:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:06:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-28 03:06:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 807 transitions. [2021-12-28 03:06:41,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6593137254901961 [2021-12-28 03:06:41,720 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 807 transitions. [2021-12-28 03:06:41,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 807 transitions. [2021-12-28 03:06:41,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:06:41,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 807 transitions. [2021-12-28 03:06:41,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.875) internal successors, (807), 8 states have internal predecessors, (807), 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) [2021-12-28 03:06:41,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-12-28 03:06:41,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-12-28 03:06:41,727 INFO L186 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 8 states and 807 transitions. [2021-12-28 03:06:41,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 384 flow [2021-12-28 03:06:41,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:06:41,736 INFO L242 Difference]: Finished difference. Result has 139 places, 128 transitions, 288 flow [2021-12-28 03:06:41,737 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2021-12-28 03:06:41,738 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2021-12-28 03:06:41,738 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 288 flow [2021-12-28 03:06:41,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 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) [2021-12-28 03:06:41,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:41,745 INFO L254 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] [2021-12-28 03:06:41,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:06:41,746 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -312552496, now seen corresponding path program 1 times [2021-12-28 03:06:41,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:41,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534551240] [2021-12-28 03:06:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:41,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:41,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:41,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534551240] [2021-12-28 03:06:41,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534551240] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:06:41,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586166939] [2021-12-28 03:06:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:41,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:06:41,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:06:41,870 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) [2021-12-28 03:06:41,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:06:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:41,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:06:41,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:06:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:42,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:06:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:42,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586166939] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:06:42,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:06:42,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-28 03:06:42,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386996494] [2021-12-28 03:06:42,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:06:42,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:06:42,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:06:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:06:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:06:42,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-12-28 03:06:42,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 288 flow. Second operand has 7 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) [2021-12-28 03:06:42,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:06:42,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-12-28 03:06:42,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:06:42,522 INFO L129 PetriNetUnfolder]: 175/510 cut-off events. [2021-12-28 03:06:42,522 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-12-28 03:06:42,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 510 events. 175/510 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2082 event pairs, 45 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 826. Up to 137 conditions per place. [2021-12-28 03:06:42,526 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 33 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2021-12-28 03:06:42,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 386 flow [2021-12-28 03:06:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:06:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 03:06:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2021-12-28 03:06:42,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2021-12-28 03:06:42,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2021-12-28 03:06:42,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2021-12-28 03:06:42,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:06:42,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2021-12-28 03:06:42,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 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) [2021-12-28 03:06:42,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-12-28 03:06:42,539 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 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) [2021-12-28 03:06:42,539 INFO L186 Difference]: Start difference. First operand has 139 places, 128 transitions, 288 flow. Second operand 7 states and 831 transitions. [2021-12-28 03:06:42,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 386 flow [2021-12-28 03:06:42,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 368 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-12-28 03:06:42,543 INFO L242 Difference]: Finished difference. Result has 139 places, 130 transitions, 303 flow [2021-12-28 03:06:42,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2021-12-28 03:06:42,543 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2021-12-28 03:06:42,544 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 303 flow [2021-12-28 03:06:42,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 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) [2021-12-28 03:06:42,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:42,544 INFO L254 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] [2021-12-28 03:06:42,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:06:42,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:06:42,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash -505819659, now seen corresponding path program 1 times [2021-12-28 03:06:42,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288680933] [2021-12-28 03:06:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:42,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:06:42,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288680933] [2021-12-28 03:06:42,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288680933] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:06:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126688614] [2021-12-28 03:06:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:42,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:06:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:06:42,924 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) [2021-12-28 03:06:42,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:06:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:43,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:06:43,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:06:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:06:43,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:06:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:06:43,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126688614] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:06:43,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:06:43,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-28 03:06:43,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562914282] [2021-12-28 03:06:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:06:43,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:06:43,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:06:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:06:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:06:43,570 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2021-12-28 03:06:43,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 303 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 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) [2021-12-28 03:06:43,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:06:43,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2021-12-28 03:06:43,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:06:43,837 INFO L129 PetriNetUnfolder]: 599/1273 cut-off events. [2021-12-28 03:06:43,838 INFO L130 PetriNetUnfolder]: For 404/585 co-relation queries the response was YES. [2021-12-28 03:06:43,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 1273 events. 599/1273 cut-off events. For 404/585 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6934 event pairs, 124 based on Foata normal form. 181/1303 useless extension candidates. Maximal degree in co-relation 2522. Up to 249 conditions per place. [2021-12-28 03:06:43,846 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 74 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2021-12-28 03:06:43,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 182 transitions, 642 flow [2021-12-28 03:06:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:06:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 03:06:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-12-28 03:06:43,848 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.744503862150921 [2021-12-28 03:06:43,848 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-12-28 03:06:43,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-12-28 03:06:43,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:06:43,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-12-28 03:06:43,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 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) [2021-12-28 03:06:43,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 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) [2021-12-28 03:06:43,856 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 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) [2021-12-28 03:06:43,856 INFO L186 Difference]: Start difference. First operand has 139 places, 130 transitions, 303 flow. Second operand 11 states and 1253 transitions. [2021-12-28 03:06:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 182 transitions, 642 flow [2021-12-28 03:06:43,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 182 transitions, 629 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-28 03:06:43,860 INFO L242 Difference]: Finished difference. Result has 151 places, 142 transitions, 402 flow [2021-12-28 03:06:43,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=402, PETRI_PLACES=151, PETRI_TRANSITIONS=142} [2021-12-28 03:06:43,861 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 14 predicate places. [2021-12-28 03:06:43,861 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 142 transitions, 402 flow [2021-12-28 03:06:43,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 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) [2021-12-28 03:06:43,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:43,862 INFO L254 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] [2021-12-28 03:06:43,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:06:44,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-28 03:06:44,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1014903075, now seen corresponding path program 2 times [2021-12-28 03:06:44,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:44,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727954424] [2021-12-28 03:06:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:44,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:06:44,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:44,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727954424] [2021-12-28 03:06:44,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727954424] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:06:44,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742957498] [2021-12-28 03:06:44,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:06:44,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:06:44,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:06:44,188 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) [2021-12-28 03:06:44,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:06:44,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:06:44,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:06:44,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:06:44,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:06:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:06:44,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:06:44,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742957498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:06:44,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:06:44,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-28 03:06:44,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010410249] [2021-12-28 03:06:44,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:06:44,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:06:44,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:06:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:06:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:06:44,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 153 [2021-12-28 03:06:44,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 142 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 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) [2021-12-28 03:06:44,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:06:44,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 153 [2021-12-28 03:06:44,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:06:44,807 INFO L129 PetriNetUnfolder]: 413/833 cut-off events. [2021-12-28 03:06:44,807 INFO L130 PetriNetUnfolder]: For 772/877 co-relation queries the response was YES. [2021-12-28 03:06:44,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 833 events. 413/833 cut-off events. For 772/877 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3682 event pairs, 111 based on Foata normal form. 131/942 useless extension candidates. Maximal degree in co-relation 2149. Up to 334 conditions per place. [2021-12-28 03:06:44,813 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 42 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2021-12-28 03:06:44,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 501 flow [2021-12-28 03:06:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:06:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-28 03:06:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 857 transitions. [2021-12-28 03:06:44,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7001633986928104 [2021-12-28 03:06:44,815 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 857 transitions. [2021-12-28 03:06:44,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 857 transitions. [2021-12-28 03:06:44,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:06:44,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 857 transitions. [2021-12-28 03:06:44,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 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) [2021-12-28 03:06:44,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-12-28 03:06:44,819 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 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) [2021-12-28 03:06:44,820 INFO L186 Difference]: Start difference. First operand has 151 places, 142 transitions, 402 flow. Second operand 8 states and 857 transitions. [2021-12-28 03:06:44,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 501 flow [2021-12-28 03:06:44,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 488 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-12-28 03:06:44,824 INFO L242 Difference]: Finished difference. Result has 150 places, 136 transitions, 379 flow [2021-12-28 03:06:44,824 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2021-12-28 03:06:44,825 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 13 predicate places. [2021-12-28 03:06:44,825 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 379 flow [2021-12-28 03:06:44,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 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) [2021-12-28 03:06:44,826 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:44,826 INFO L254 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] [2021-12-28 03:06:44,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:06:45,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:06:45,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:45,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1225204200, now seen corresponding path program 1 times [2021-12-28 03:06:45,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:45,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763670192] [2021-12-28 03:06:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:45,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:45,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:45,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763670192] [2021-12-28 03:06:45,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763670192] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:06:45,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898873989] [2021-12-28 03:06:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:45,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:06:45,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:06:45,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:06:45,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:06:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:45,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-28 03:06:45,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:06:45,813 INFO L387 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 [2021-12-28 03:06:45,845 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 03:06:45,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-28 03:06:45,892 INFO L353 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-12-28 03:06:45,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-12-28 03:06:46,411 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-12-28 03:06:46,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 34 [2021-12-28 03:06:46,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 03:06:47,325 INFO L387 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 6 treesize of output 5 [2021-12-28 03:06:47,521 INFO L387 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 6 treesize of output 5 [2021-12-28 03:06:47,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2021-12-28 03:06:48,096 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-28 03:06:48,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 69 treesize of output 36 [2021-12-28 03:06:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:48,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:06:49,602 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (let ((.cse2 (select .cse3 c_~A~0.offset))) (or (let ((.cse1 (select .cse3 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse0 (< .cse1 c_~min2~0))) (and (or (not .cse0) (= .cse1 .cse2)) (or (= c_~min2~0 .cse2) .cse0)))) (not (< .cse2 c_~min1~0)))))) (forall ((v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (or (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse4 (< .cse5 c_~min2~0))) (and (or (= c_~min2~0 c_~min1~0) .cse4) (or (= c_~min1~0 .cse5) (not .cse4))))) (< (select .cse6 c_~A~0.offset) c_~min1~0))))) is different from false [2021-12-28 03:06:49,716 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_162 (Array Int Int)) (v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (or (< (select .cse0 c_~A~0.offset) c_~min1~0) (let ((.cse1 (select .cse0 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse2 (< .cse1 c_~min2~0))) (and (or (= c_~min1~0 .cse1) (not .cse2)) (or (= c_~min2~0 c_~min1~0) .cse2))))))) (forall ((v_ArrVal_162 (Array Int Int)) (v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (let ((.cse3 (select .cse6 c_~A~0.offset))) (or (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse4 (< .cse5 c_~min2~0))) (and (or (= c_~min2~0 .cse3) .cse4) (or (= .cse3 .cse5) (not .cse4))))) (not (< .cse3 c_~min1~0))))))) is different from false [2021-12-28 03:06:49,959 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_162 (Array Int Int)) (v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (or (< (select .cse0 c_~A~0.offset) c_~min1~0) (let ((.cse1 (select .cse0 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse2 (< .cse1 c_~min2~0))) (and (or (= c_~min1~0 .cse1) (not .cse2)) (or (= c_~min2~0 c_~min1~0) .cse2))))))) (forall ((v_ArrVal_162 (Array Int Int)) (v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (let ((.cse3 (select .cse6 c_~A~0.offset))) (or (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse4 (< .cse5 c_~min2~0))) (and (or (= c_~min2~0 .cse3) .cse4) (or (= .cse3 .cse5) (not .cse4))))) (not (< .cse3 c_~min1~0))))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) is different from false [2021-12-28 03:06:50,021 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_162 (Array Int Int)) (v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (or (< (select .cse0 c_~A~0.offset) c_~min1~0) (let ((.cse1 (select .cse0 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse2 (< .cse1 c_~min2~0))) (and (or (= c_~min1~0 .cse1) (not .cse2)) (or (= c_~min2~0 c_~min1~0) .cse2))))))) (forall ((v_ArrVal_162 (Array Int Int)) (v_ArrVal_164 (Array Int Int)) (v_ArrVal_163 (Array Int Int))) (let ((.cse6 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_163) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_164) c_~A~0.base))) (let ((.cse3 (select .cse6 c_~A~0.offset))) (or (let ((.cse5 (select .cse6 (+ c_~A~0.offset (* 4 c_~M~0))))) (let ((.cse4 (< .cse5 c_~min2~0))) (and (or (= c_~min2~0 .cse3) .cse4) (or (= .cse3 .cse5) (not .cse4))))) (not (< .cse3 c_~min1~0))))))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2021-12-28 03:06:55,220 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 316 treesize of output 209 [2021-12-28 03:06:55,245 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1853 treesize of output 1793 [2021-12-28 03:06:55,283 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,284 INFO L387 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 1748 treesize of output 1721 [2021-12-28 03:06:55,315 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,316 INFO L387 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 1708 treesize of output 1641 [2021-12-28 03:06:55,357 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,358 INFO L387 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 1628 treesize of output 1481 [2021-12-28 03:06:55,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,388 INFO L387 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 1468 treesize of output 1385 [2021-12-28 03:06:55,419 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,420 INFO L387 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 1372 treesize of output 1337 [2021-12-28 03:06:55,453 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:06:55,454 INFO L387 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 1324 treesize of output 1313 [2021-12-28 03:07:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:07,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898873989] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:07:07,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:07:07,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 28] total 73 [2021-12-28 03:07:07,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685288281] [2021-12-28 03:07:07,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:07:07,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-28 03:07:07,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-28 03:07:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=3974, Unknown=87, NotChecked=548, Total=5256 [2021-12-28 03:07:07,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 153 [2021-12-28 03:07:07,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 379 flow. Second operand has 73 states, 73 states have (on average 57.76712328767123) internal successors, (4217), 73 states have internal predecessors, (4217), 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) [2021-12-28 03:07:07,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:07,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 153 [2021-12-28 03:07:07,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:12,964 INFO L129 PetriNetUnfolder]: 4355/7238 cut-off events. [2021-12-28 03:07:12,965 INFO L130 PetriNetUnfolder]: For 6145/6158 co-relation queries the response was YES. [2021-12-28 03:07:12,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18697 conditions, 7238 events. 4355/7238 cut-off events. For 6145/6158 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 48174 event pairs, 522 based on Foata normal form. 3/7099 useless extension candidates. Maximal degree in co-relation 18685. Up to 2328 conditions per place. [2021-12-28 03:07:13,014 INFO L132 encePairwiseOnDemand]: 107/153 looper letters, 280 selfloop transitions, 109 changer transitions 14/452 dead transitions. [2021-12-28 03:07:13,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 452 transitions, 2315 flow [2021-12-28 03:07:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-28 03:07:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-12-28 03:07:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3127 transitions. [2021-12-28 03:07:13,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.40875816993464054 [2021-12-28 03:07:13,021 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3127 transitions. [2021-12-28 03:07:13,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3127 transitions. [2021-12-28 03:07:13,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:13,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3127 transitions. [2021-12-28 03:07:13,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 62.54) internal successors, (3127), 50 states have internal predecessors, (3127), 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) [2021-12-28 03:07:13,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 153.0) internal successors, (7803), 51 states have internal predecessors, (7803), 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) [2021-12-28 03:07:13,039 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 153.0) internal successors, (7803), 51 states have internal predecessors, (7803), 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) [2021-12-28 03:07:13,040 INFO L186 Difference]: Start difference. First operand has 150 places, 136 transitions, 379 flow. Second operand 50 states and 3127 transitions. [2021-12-28 03:07:13,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 452 transitions, 2315 flow [2021-12-28 03:07:13,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 452 transitions, 2263 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-28 03:07:13,079 INFO L242 Difference]: Finished difference. Result has 224 places, 236 transitions, 1195 flow [2021-12-28 03:07:13,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1195, PETRI_PLACES=224, PETRI_TRANSITIONS=236} [2021-12-28 03:07:13,082 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 87 predicate places. [2021-12-28 03:07:13,082 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 236 transitions, 1195 flow [2021-12-28 03:07:13,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 57.76712328767123) internal successors, (4217), 73 states have internal predecessors, (4217), 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) [2021-12-28 03:07:13,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:13,084 INFO L254 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] [2021-12-28 03:07:13,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:13,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:13,302 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:13,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1484120578, now seen corresponding path program 2 times [2021-12-28 03:07:13,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:13,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652197449] [2021-12-28 03:07:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:13,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:14,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652197449] [2021-12-28 03:07:14,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652197449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401734653] [2021-12-28 03:07:14,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:07:14,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:14,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:14,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:14,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:07:14,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:07:14,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:14,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-28 03:07:14,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:14,859 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:14,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 69 treesize of output 45 [2021-12-28 03:07:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:15,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:15,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:15,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 87 treesize of output 55 [2021-12-28 03:07:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:16,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401734653] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:07:16,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:07:16,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 15] total 43 [2021-12-28 03:07:16,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855288791] [2021-12-28 03:07:16,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:07:16,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-28 03:07:16,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-28 03:07:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1535, Unknown=0, NotChecked=0, Total=1806 [2021-12-28 03:07:16,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2021-12-28 03:07:16,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 236 transitions, 1195 flow. Second operand has 43 states, 43 states have (on average 69.25581395348837) internal successors, (2978), 43 states have internal predecessors, (2978), 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) [2021-12-28 03:07:16,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:16,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2021-12-28 03:07:16,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:22,140 INFO L129 PetriNetUnfolder]: 8600/14238 cut-off events. [2021-12-28 03:07:22,140 INFO L130 PetriNetUnfolder]: For 29258/29322 co-relation queries the response was YES. [2021-12-28 03:07:22,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46483 conditions, 14238 events. 8600/14238 cut-off events. For 29258/29322 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 104918 event pairs, 1410 based on Foata normal form. 11/14122 useless extension candidates. Maximal degree in co-relation 46442. Up to 6492 conditions per place. [2021-12-28 03:07:22,370 INFO L132 encePairwiseOnDemand]: 118/153 looper letters, 464 selfloop transitions, 201 changer transitions 14/731 dead transitions. [2021-12-28 03:07:22,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 731 transitions, 5088 flow [2021-12-28 03:07:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-28 03:07:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-28 03:07:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4438 transitions. [2021-12-28 03:07:22,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.483442265795207 [2021-12-28 03:07:22,379 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4438 transitions. [2021-12-28 03:07:22,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4438 transitions. [2021-12-28 03:07:22,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:22,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4438 transitions. [2021-12-28 03:07:22,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 73.96666666666667) internal successors, (4438), 60 states have internal predecessors, (4438), 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) [2021-12-28 03:07:22,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 153.0) internal successors, (9333), 61 states have internal predecessors, (9333), 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) [2021-12-28 03:07:22,402 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 153.0) internal successors, (9333), 61 states have internal predecessors, (9333), 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) [2021-12-28 03:07:22,402 INFO L186 Difference]: Start difference. First operand has 224 places, 236 transitions, 1195 flow. Second operand 60 states and 4438 transitions. [2021-12-28 03:07:22,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 731 transitions, 5088 flow [2021-12-28 03:07:22,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 731 transitions, 5024 flow, removed 20 selfloop flow, removed 18 redundant places. [2021-12-28 03:07:22,539 INFO L242 Difference]: Finished difference. Result has 293 places, 391 transitions, 2960 flow [2021-12-28 03:07:22,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2960, PETRI_PLACES=293, PETRI_TRANSITIONS=391} [2021-12-28 03:07:22,540 INFO L334 CegarLoopForPetriNet]: 137 programPoint places, 156 predicate places. [2021-12-28 03:07:22,540 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 391 transitions, 2960 flow [2021-12-28 03:07:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 69.25581395348837) internal successors, (2978), 43 states have internal predecessors, (2978), 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) [2021-12-28 03:07:22,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:22,541 INFO L254 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] [2021-12-28 03:07:22,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:22,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:22,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1704370966, now seen corresponding path program 3 times [2021-12-28 03:07:22,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:22,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772028159] [2021-12-28 03:07:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:22,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:23,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:23,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772028159] [2021-12-28 03:07:23,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772028159] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:23,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804593691] [2021-12-28 03:07:23,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:07:23,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:23,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:23,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:23,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:07:23,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-28 03:07:23,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:23,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-28 03:07:23,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:24,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-28 03:07:24,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2021-12-28 03:07:24,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 [2021-12-28 03:07:25,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:07:25,454 INFO L387 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 35 treesize of output 33 [2021-12-28 03:07:25,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:25,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 63 treesize of output 43 [2021-12-28 03:07:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:26,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:26,256 WARN L838 $PredicateComparison]: unable to prove that (or (<= (+ 2 c_~M~0) c_~N~0) (and (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse0 c_~min2~0)) (= c_~min1~0 .cse0)))) (or (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) c_~min2~0)) (= c_~min2~0 c_~min1~0)))) is different from false [2021-12-28 03:07:26,423 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4))))) (let ((.cse1 (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) c_~min2~0))) (.cse2 (< .cse3 c_~min1~0))) (and (or (and (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse0 c_~min2~0)) (= c_~min1~0 .cse0)))) (or .cse1 (= c_~min2~0 c_~min1~0))) .cse2) (or (and (or (= c_~min2~0 .cse3) .cse1) (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse4 c_~min2~0)) (= (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4))) .cse4))))) (not .cse2))))) (<= (+ 2 c_~M~0) c_~N~0)) is different from false [2021-12-28 03:07:26,486 WARN L838 $PredicateComparison]: unable to prove that (or (<= (+ 2 c_~M~0) c_~N~0) (let ((.cse4 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (let ((.cse2 (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) c_~min2~0))) (.cse0 (< .cse4 c_~min1~0))) (and (or .cse0 (and (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse1 c_~min2~0)) (= c_~min1~0 .cse1)))) (or .cse2 (= c_~min2~0 c_~min1~0)))) (or (and (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse3 c_~min2~0)) (= (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) .cse3)))) (or .cse2 (= c_~min2~0 .cse4))) (not .cse0)))))) is different from false [2021-12-28 03:07:30,259 WARN L838 $PredicateComparison]: unable to prove that (forall ((~M~0 Int)) (or (<= (+ 2 ~M~0) c_~N~0) (< 0 ~M~0) (and (forall ((v_ArrVal_232 (Array Int Int)) (v_ArrVal_231 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_232) c_~A~0.base) c_~A~0.offset) c_~min1~0) (and (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse0 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~min1~0 .cse0) (not (< .cse0 c_~min2~0))))) (or (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0)) (= c_~min2~0 c_~min1~0))))) (forall ((v_ArrVal_232 (Array Int Int)) (v_ArrVal_231 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_232) c_~A~0.base) c_~A~0.offset))) (or (not (< .cse1 c_~min1~0)) (and (forall ((v_ArrVal_233 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_232))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (= .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) (not (< .cse2 c_~min2~0)))))) (or (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_232) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_233) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0)) (= c_~min2~0 .cse1))))))))) is different from false [2021-12-28 03:07:40,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:40,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 304 treesize of output 197 [2021-12-28 03:07:40,373 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:40,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2613 treesize of output 2449 [2021-12-28 03:07:40,417 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:40,418 INFO L387 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 2404 treesize of output 2377 [2021-12-28 03:07:40,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2364 treesize of output 2340 [2021-12-28 03:07:40,459 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:40,460 INFO L387 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 2340 treesize of output 2333 [2021-12-28 03:07:40,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2320 treesize of output 2272 [2021-12-28 03:07:40,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2272 treesize of output 2032 [2021-12-28 03:07:40,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:40,521 INFO L387 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 2032 treesize of output 1829 [2021-12-28 03:07:40,548 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:40,548 INFO L387 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 1816 treesize of output 1721 [2021-12-28 03:07:40,566 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1708 treesize of output 1660 [2021-12-28 03:07:40,579 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2021-12-28 03:07:40,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-28 03:07:40,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:40,793 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-28 03:07:40,796 INFO L158 Benchmark]: Toolchain (without parser) took 61197.84ms. Allocated memory was 58.7MB in the beginning and 882.9MB in the end (delta: 824.2MB). Free memory was 37.2MB in the beginning and 264.3MB in the end (delta: -227.1MB). Peak memory consumption was 595.7MB. Max. memory is 16.1GB. [2021-12-28 03:07:40,796 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 39.4MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:07:40,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.38ms. Allocated memory is still 58.7MB. Free memory was 37.0MB in the beginning and 40.1MB in the end (delta: -3.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 03:07:40,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.30ms. Allocated memory is still 58.7MB. Free memory was 40.1MB in the beginning and 38.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:07:40,797 INFO L158 Benchmark]: Boogie Preprocessor took 43.66ms. Allocated memory is still 58.7MB. Free memory was 38.3MB in the beginning and 36.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:07:40,797 INFO L158 Benchmark]: RCFGBuilder took 515.92ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 36.7MB in the beginning and 54.5MB in the end (delta: -17.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 03:07:40,797 INFO L158 Benchmark]: TraceAbstraction took 60353.32ms. Allocated memory was 79.7MB in the beginning and 882.9MB in the end (delta: 803.2MB). Free memory was 53.8MB in the beginning and 264.3MB in the end (delta: -210.5MB). Peak memory consumption was 590.9MB. Max. memory is 16.1GB. [2021-12-28 03:07:40,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 39.4MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.38ms. Allocated memory is still 58.7MB. Free memory was 37.0MB in the beginning and 40.1MB in the end (delta: -3.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.30ms. Allocated memory is still 58.7MB. Free memory was 40.1MB in the beginning and 38.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.66ms. Allocated memory is still 58.7MB. Free memory was 38.3MB in the beginning and 36.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.92ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 36.7MB in the beginning and 54.5MB in the end (delta: -17.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 60353.32ms. Allocated memory was 79.7MB in the beginning and 882.9MB in the end (delta: 803.2MB). Free memory was 53.8MB in the beginning and 264.3MB in the end (delta: -210.5MB). Peak memory consumption was 590.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-28 03:07:40,863 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...