./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_compare_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_compare_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc --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 d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:41:22,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:22,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:22,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:22,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:22,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:22,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:22,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:22,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:22,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:22,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:22,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:22,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:22,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:22,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:22,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:22,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:22,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:22,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:22,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:22,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:22,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:22,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:22,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:22,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:22,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:22,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:22,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:22,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:22,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:22,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:22,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:22,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:22,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:22,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:22,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:22,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:22,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:22,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:22,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:22,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:22,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:41:22,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:22,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:22,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:22,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:22,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:22,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:22,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:22,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:22,889 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:22,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:22,891 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:22,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:22,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:22,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:22,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:22,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:22,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:22,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:22,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:22,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:22,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:22,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:22,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:22,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:22,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:22,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:22,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:22,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:22,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:22,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:22,897 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:22,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:22,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:22,898 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c [2022-11-02 20:41:23,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:23,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:23,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:23,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:23,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:23,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-examples/standard_compare_ground.i [2022-11-02 20:41:23,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/data/4120cf5e4/a64b98e996b04185be3113485f136c16/FLAGad8688827 [2022-11-02 20:41:23,907 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:23,907 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/sv-benchmarks/c/array-examples/standard_compare_ground.i [2022-11-02 20:41:23,915 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/data/4120cf5e4/a64b98e996b04185be3113485f136c16/FLAGad8688827 [2022-11-02 20:41:24,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/data/4120cf5e4/a64b98e996b04185be3113485f136c16 [2022-11-02 20:41:24,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:24,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:24,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:24,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:24,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:24,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40550999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24, skipping insertion in model container [2022-11-02 20:41:24,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:24,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:24,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/sv-benchmarks/c/array-examples/standard_compare_ground.i[816,829] [2022-11-02 20:41:24,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:24,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:24,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/sv-benchmarks/c/array-examples/standard_compare_ground.i[816,829] [2022-11-02 20:41:24,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:24,653 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:24,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24 WrapperNode [2022-11-02 20:41:24,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:24,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:24,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:24,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:24,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,706 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-02 20:41:24,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:24,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:24,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:24,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:24,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,757 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:24,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:24,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:24,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:24,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (1/1) ... [2022-11-02 20:41:24,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:24,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:24,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:41:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:24,946 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:24,949 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:25,104 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:25,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:25,112 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:41:25,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:25 BoogieIcfgContainer [2022-11-02 20:41:25,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:25,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:25,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:25,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:25,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:24" (1/3) ... [2022-11-02 20:41:25,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e16784c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:25, skipping insertion in model container [2022-11-02 20:41:25,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:24" (2/3) ... [2022-11-02 20:41:25,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e16784c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:25, skipping insertion in model container [2022-11-02 20:41:25,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:25" (3/3) ... [2022-11-02 20:41:25,126 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2022-11-02 20:41:25,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:25,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:41:25,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:25,221 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ee5fd70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:25,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:41:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:41:25,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:25,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:25,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2005121311, now seen corresponding path program 1 times [2022-11-02 20:41:25,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:25,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878170761] [2022-11-02 20:41:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:25,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:25,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878170761] [2022-11-02 20:41:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878170761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:25,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:25,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058790759] [2022-11-02 20:41:25,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:25,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:25,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:25,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:25,531 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:25,581 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2022-11-02 20:41:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:25,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-02 20:41:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:25,602 INFO L225 Difference]: With dead ends: 36 [2022-11-02 20:41:25,603 INFO L226 Difference]: Without dead ends: 17 [2022-11-02 20:41:25,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:25,609 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:25,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-02 20:41:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-11-02 20:41:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-02 20:41:25,642 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2022-11-02 20:41:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:25,643 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-02 20:41:25,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-02 20:41:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:41:25,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:25,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:25,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:25,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:25,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1565815188, now seen corresponding path program 1 times [2022-11-02 20:41:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:25,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765393982] [2022-11-02 20:41:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:25,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:25,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765393982] [2022-11-02 20:41:25,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765393982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439679623] [2022-11-02 20:41:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:25,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:25,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:25,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:25,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:41:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:25,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:41:25,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:25,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:25,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439679623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:25,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:25,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:41:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875928350] [2022-11-02 20:41:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:25,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:25,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:25,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:25,983 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:25,996 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-02 20:41:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2022-11-02 20:41:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:25,998 INFO L225 Difference]: With dead ends: 26 [2022-11-02 20:41:25,998 INFO L226 Difference]: Without dead ends: 19 [2022-11-02 20:41:25,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:26,000 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:26,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-02 20:41:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-02 20:41:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-02 20:41:26,006 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2022-11-02 20:41:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:26,006 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-02 20:41:26,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-02 20:41:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:41:26,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:26,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:26,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:41:26,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:26,226 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1959146159, now seen corresponding path program 1 times [2022-11-02 20:41:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:26,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882647781] [2022-11-02 20:41:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:26,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882647781] [2022-11-02 20:41:26,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882647781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:26,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263737870] [2022-11-02 20:41:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:26,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:26,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:26,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:26,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:41:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:26,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:26,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:26,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:26,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263737870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:26,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:26,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:41:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747428719] [2022-11-02 20:41:26,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:26,533 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:26,555 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-11-02 20:41:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2022-11-02 20:41:26,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:26,560 INFO L225 Difference]: With dead ends: 27 [2022-11-02 20:41:26,560 INFO L226 Difference]: Without dead ends: 17 [2022-11-02 20:41:26,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:26,564 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:26,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-02 20:41:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-02 20:41:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-02 20:41:26,572 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2022-11-02 20:41:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:26,572 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-02 20:41:26,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-02 20:41:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:41:26,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:26,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:26,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:26,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:26,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash -184138797, now seen corresponding path program 1 times [2022-11-02 20:41:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:26,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446459757] [2022-11-02 20:41:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:26,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:26,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:26,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446459757] [2022-11-02 20:41:26,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446459757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:26,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541673179] [2022-11-02 20:41:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:26,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:26,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:26,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:26,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:41:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:26,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:26,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:27,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:27,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541673179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:27,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:27,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-02 20:41:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102137351] [2022-11-02 20:41:27,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:27,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:27,076 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:27,117 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-11-02 20:41:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:41:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) Word has length 14 [2022-11-02 20:41:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:27,119 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:41:27,119 INFO L226 Difference]: Without dead ends: 23 [2022-11-02 20:41:27,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:27,120 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:27,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-02 20:41:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-02 20:41:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-02 20:41:27,125 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-11-02 20:41:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:27,126 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-02 20:41:27,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-02 20:41:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:41:27,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:27,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:27,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:27,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -494561575, now seen corresponding path program 2 times [2022-11-02 20:41:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:27,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364116066] [2022-11-02 20:41:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:41:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:27,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364116066] [2022-11-02 20:41:27,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364116066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758963541] [2022-11-02 20:41:27,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:41:27,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:27,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:27,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:41:27,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:41:27,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:41:27,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:41:27,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:27,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:41:27,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758963541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:27,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:27,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-02 20:41:27,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258081831] [2022-11-02 20:41:27,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:27,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:41:27,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:27,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:41:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:41:27,752 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:27,834 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2022-11-02 20:41:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:41:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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) Word has length 20 [2022-11-02 20:41:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:27,839 INFO L225 Difference]: With dead ends: 52 [2022-11-02 20:41:27,839 INFO L226 Difference]: Without dead ends: 40 [2022-11-02 20:41:27,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:41:27,840 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:27,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-02 20:41:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2022-11-02 20:41:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-11-02 20:41:27,860 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 20 [2022-11-02 20:41:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:27,860 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-11-02 20:41:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-11-02 20:41:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:41:27,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:27,862 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:27,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:28,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:28,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:28,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash 451448930, now seen corresponding path program 3 times [2022-11-02 20:41:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:28,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136046573] [2022-11-02 20:41:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:28,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:41:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:28,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136046573] [2022-11-02 20:41:28,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136046573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:28,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634304484] [2022-11-02 20:41:28,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:41:28,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:28,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:28,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:28,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:41:28,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:41:28,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:41:28,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:41:28,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-02 20:41:28,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-02 20:41:28,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634304484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:28,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:28,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-11-02 20:41:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706939530] [2022-11-02 20:41:28,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:28,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:41:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:41:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:41:28,634 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:28,726 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-11-02 20:41:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:41:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) Word has length 35 [2022-11-02 20:41:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:28,731 INFO L225 Difference]: With dead ends: 68 [2022-11-02 20:41:28,731 INFO L226 Difference]: Without dead ends: 53 [2022-11-02 20:41:28,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:41:28,736 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:28,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 82 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-02 20:41:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-11-02 20:41:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2022-11-02 20:41:28,745 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 35 [2022-11-02 20:41:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2022-11-02 20:41:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2022-11-02 20:41:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 20:41:28,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:28,754 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:28,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:28,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:41:28,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash 678799712, now seen corresponding path program 4 times [2022-11-02 20:41:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:28,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951675942] [2022-11-02 20:41:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:41:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951675942] [2022-11-02 20:41:29,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951675942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:29,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137648280] [2022-11-02 20:41:29,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:41:29,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:29,434 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:29,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:41:29,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:41:29,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:41:29,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:41:29,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:41:29,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:41:29,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137648280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:29,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:41:29,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-11-02 20:41:29,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156302923] [2022-11-02 20:41:29,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-02 20:41:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-02 20:41:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:41:29,948 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:30,060 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2022-11-02 20:41:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:41:30,061 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 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) Word has length 49 [2022-11-02 20:41:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:30,065 INFO L225 Difference]: With dead ends: 105 [2022-11-02 20:41:30,065 INFO L226 Difference]: Without dead ends: 78 [2022-11-02 20:41:30,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:41:30,067 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:30,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 67 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-02 20:41:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-02 20:41:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2022-11-02 20:41:30,094 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 49 [2022-11-02 20:41:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:30,094 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2022-11-02 20:41:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2022-11-02 20:41:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 20:41:30,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:30,097 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:30,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:30,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:41:30,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash -408162682, now seen corresponding path program 5 times [2022-11-02 20:41:30,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481588504] [2022-11-02 20:41:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:30,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:41:31,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:31,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481588504] [2022-11-02 20:41:31,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481588504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:31,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010135516] [2022-11-02 20:41:31,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:41:31,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:31,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:31,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:31,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:42:30,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-11-02 20:42:30,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:30,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:42:30,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:42:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:42:31,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010135516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:31,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:42:31,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2022-11-02 20:42:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169595177] [2022-11-02 20:42:31,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:31,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:42:31,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:42:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:42:31,697 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:31,982 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2022-11-02 20:42:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 20:42:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 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) Word has length 75 [2022-11-02 20:42:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:31,984 INFO L225 Difference]: With dead ends: 157 [2022-11-02 20:42:31,985 INFO L226 Difference]: Without dead ends: 130 [2022-11-02 20:42:31,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:42:31,987 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:31,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 54 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:42:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-02 20:42:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-11-02 20:42:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2022-11-02 20:42:32,000 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 75 [2022-11-02 20:42:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:32,001 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2022-11-02 20:42:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2022-11-02 20:42:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 20:42:32,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:32,004 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:32,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:32,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:32,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1135775314, now seen corresponding path program 6 times [2022-11-02 20:42:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:32,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808905354] [2022-11-02 20:42:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:32,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:42:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:36,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808905354] [2022-11-02 20:42:36,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808905354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:42:36,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387659378] [2022-11-02 20:42:36,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:42:36,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:36,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:36,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:42:36,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-02 20:42:36,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:36,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:42:36,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-11-02 20:42:37,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:38,146 INFO L356 Elim1Store]: treesize reduction 30, result has 58.9 percent of original size [2022-11-02 20:42:38,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-11-02 20:42:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-11-02 20:42:38,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387659378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:38,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:42:38,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 8, 7] total 63 [2022-11-02 20:42:38,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937562737] [2022-11-02 20:42:38,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:38,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-02 20:42:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-02 20:42:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1411, Invalid=2495, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:42:38,262 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand has 63 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 63 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:41,275 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2022-11-02 20:42:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-02 20:42:41,275 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 63 states have internal predecessors, (139), 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) Word has length 127 [2022-11-02 20:42:41,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:41,277 INFO L225 Difference]: With dead ends: 165 [2022-11-02 20:42:41,277 INFO L226 Difference]: Without dead ends: 138 [2022-11-02 20:42:41,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4197, Invalid=9609, Unknown=0, NotChecked=0, Total=13806 [2022-11-02 20:42:41,285 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 95 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:41,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 63 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:42:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-02 20:42:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2022-11-02 20:42:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2022-11-02 20:42:41,302 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 127 [2022-11-02 20:42:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:41,303 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2022-11-02 20:42:41,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.2063492063492065) internal successors, (139), 63 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2022-11-02 20:42:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-02 20:42:41,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:41,306 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:41,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:41,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:41,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2019846662, now seen corresponding path program 1 times [2022-11-02 20:42:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:41,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779696779] [2022-11-02 20:42:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:42:45,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:45,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779696779] [2022-11-02 20:42:45,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779696779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:42:45,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169956710] [2022-11-02 20:42:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:45,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:45,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:45,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:45,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:42:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 20:42:45,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:42:45,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2654 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:42:50,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169956710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:50,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:42:50,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-11-02 20:42:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611124072] [2022-11-02 20:42:50,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-02 20:42:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-02 20:42:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2022-11-02 20:42:50,485 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 107 states, 107 states have (on average 2.0934579439252334) internal successors, (224), 107 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:51,113 INFO L93 Difference]: Finished difference Result 269 states and 325 transitions. [2022-11-02 20:42:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-02 20:42:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0934579439252334) internal successors, (224), 107 states have internal predecessors, (224), 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) Word has length 133 [2022-11-02 20:42:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:51,116 INFO L225 Difference]: With dead ends: 269 [2022-11-02 20:42:51,117 INFO L226 Difference]: Without dead ends: 240 [2022-11-02 20:42:51,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2022-11-02 20:42:51,121 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 156 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:51,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 106 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:42:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-02 20:42:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-02 20:42:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 242 transitions. [2022-11-02 20:42:51,165 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 242 transitions. Word has length 133 [2022-11-02 20:42:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:51,167 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 242 transitions. [2022-11-02 20:42:51,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.0934579439252334) internal successors, (224), 107 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 242 transitions. [2022-11-02 20:42:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-02 20:42:51,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:51,181 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:51,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:51,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash -651492388, now seen corresponding path program 2 times [2022-11-02 20:42:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:51,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368731412] [2022-11-02 20:42:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10869 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:43:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:02,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368731412] [2022-11-02 20:43:02,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368731412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:02,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890987651] [2022-11-02 20:43:02,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:43:02,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:02,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:02,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:02,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:43:03,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:43:03,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:03,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-02 20:43:03,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10869 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:43:03,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10869 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:43:21,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890987651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:21,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:21,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 213 [2022-11-02 20:43:21,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674822969] [2022-11-02 20:43:21,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:21,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 213 states [2022-11-02 20:43:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2022-11-02 20:43:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2022-11-02 20:43:21,081 INFO L87 Difference]: Start difference. First operand 240 states and 242 transitions. Second operand has 213 states, 213 states have (on average 2.0469483568075115) internal successors, (436), 213 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:22,924 INFO L93 Difference]: Finished difference Result 481 states and 590 transitions. [2022-11-02 20:43:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-11-02 20:43:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 213 states, 213 states have (on average 2.0469483568075115) internal successors, (436), 213 states have internal predecessors, (436), 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) Word has length 239 [2022-11-02 20:43:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:22,939 INFO L225 Difference]: With dead ends: 481 [2022-11-02 20:43:22,939 INFO L226 Difference]: Without dead ends: 452 [2022-11-02 20:43:22,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2022-11-02 20:43:22,946 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 315 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:22,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 106 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:43:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-02 20:43:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-02 20:43:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.0066518847006651) internal successors, (454), 451 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 454 transitions. [2022-11-02 20:43:22,977 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 454 transitions. Word has length 239 [2022-11-02 20:43:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:22,978 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 454 transitions. [2022-11-02 20:43:22,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 213 states, 213 states have (on average 2.0469483568075115) internal successors, (436), 213 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 454 transitions. [2022-11-02 20:43:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-02 20:43:22,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:22,991 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:23,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:23,212 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1634761464, now seen corresponding path program 3 times [2022-11-02 20:43:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:23,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454886599] [2022-11-02 20:43:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 44153 backedges. 0 proven. 44100 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:44:03,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:03,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454886599] [2022-11-02 20:44:03,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454886599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:03,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645477522] [2022-11-02 20:44:03,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:44:03,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:03,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:03,935 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:44:04,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:44:04,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:44:04,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:44:04,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 44153 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 43707 trivial. 0 not checked. [2022-11-02 20:44:07,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:08,137 INFO L356 Elim1Store]: treesize reduction 30, result has 61.0 percent of original size [2022-11-02 20:44:08,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 54 [2022-11-02 20:44:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 44153 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 44126 trivial. 0 not checked. [2022-11-02 20:44:08,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645477522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:08,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:08,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 11, 9] total 228 [2022-11-02 20:44:08,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157201602] [2022-11-02 20:44:08,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:08,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2022-11-02 20:44:08,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2022-11-02 20:44:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22840, Invalid=28916, Unknown=0, NotChecked=0, Total=51756 [2022-11-02 20:44:08,400 INFO L87 Difference]: Start difference. First operand 452 states and 454 transitions. Second operand has 228 states, 228 states have (on average 2.0964912280701755) internal successors, (478), 228 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:35,714 INFO L93 Difference]: Finished difference Result 491 states and 496 transitions. [2022-11-02 20:44:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-02 20:44:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 228 states have (on average 2.0964912280701755) internal successors, (478), 228 states have internal predecessors, (478), 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) Word has length 451 [2022-11-02 20:44:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:35,719 INFO L225 Difference]: With dead ends: 491 [2022-11-02 20:44:35,719 INFO L226 Difference]: Without dead ends: 462 [2022-11-02 20:44:35,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 886 SyntacticMatches, 1 SemanticMatches, 440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27088 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=67812, Invalid=127110, Unknown=0, NotChecked=0, Total=194922 [2022-11-02 20:44:35,735 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 270 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:35,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 154 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-02 20:44:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2022-11-02 20:44:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.0065645514223194) internal successors, (460), 457 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 460 transitions. [2022-11-02 20:44:35,761 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 460 transitions. Word has length 451 [2022-11-02 20:44:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:35,762 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 460 transitions. [2022-11-02 20:44:35,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 228 states have (on average 2.0964912280701755) internal successors, (478), 228 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 460 transitions. [2022-11-02 20:44:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-02 20:44:35,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:35,774 INFO L195 NwaCegarLoop]: trace histogram [211, 211, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:35,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:35,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08410afa-445a-4f48-afd3-2db7eccdd180/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:44:35,987 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 792090300, now seen corresponding path program 4 times [2022-11-02 20:44:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:35,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039605000] [2022-11-02 20:44:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat