./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sum10-1.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_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/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_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sum10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/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_809bbf36-63ba-4727-bf0f-bb41cdafb08b/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 f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 --- 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 20:59:38,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:38,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:38,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:38,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:38,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:38,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:38,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:38,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:38,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:38,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:38,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:38,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:38,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:38,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:38,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:38,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:38,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:38,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:38,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:38,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:38,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:38,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:38,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:38,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:38,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:38,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:38,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:38,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:38,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:38,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:38,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:38,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:38,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:38,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:38,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:38,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:38,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:38,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:38,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:38,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:38,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:59:38,782 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:38,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:38,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:38,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:38,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:38,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:38,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:38,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:38,785 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:38,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:38,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:59:38,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:38,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:59:38,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:38,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:38,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:38,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:38,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:59:38,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:38,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:38,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:38,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:38,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:38,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:38,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:38,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:38,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:38,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:38,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:38,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:38,790 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:38,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:38,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:38,791 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_809bbf36-63ba-4727-bf0f-bb41cdafb08b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2022-11-02 20:59:39,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:39,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:39,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:39,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:39,150 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:39,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/reducercommutativity/sum10-1.i [2022-11-02 20:59:39,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/data/9821370c0/6848e00d37334102a86c6a92f56d13c3/FLAGd099dd6a2 [2022-11-02 20:59:39,769 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:39,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/sv-benchmarks/c/reducercommutativity/sum10-1.i [2022-11-02 20:59:39,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/data/9821370c0/6848e00d37334102a86c6a92f56d13c3/FLAGd099dd6a2 [2022-11-02 20:59:40,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/data/9821370c0/6848e00d37334102a86c6a92f56d13c3 [2022-11-02 20:59:40,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:40,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:40,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:40,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:40,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:40,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f28116e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40, skipping insertion in model container [2022-11-02 20:59:40,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:40,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:40,344 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_809bbf36-63ba-4727-bf0f-bb41cdafb08b/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2022-11-02 20:59:40,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:40,354 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:40,374 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_809bbf36-63ba-4727-bf0f-bb41cdafb08b/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2022-11-02 20:59:40,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:40,388 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:40,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40 WrapperNode [2022-11-02 20:59:40,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:40,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:40,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:40,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:40,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,421 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-02 20:59:40,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:40,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:40,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:40,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:40,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:40,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:40,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:40,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:40,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (1/1) ... [2022-11-02 20:59:40,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:40,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:40,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-11-02 20:59:40,544 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-11-02 20:59:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:59:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:59:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:40,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:59:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:59:40,611 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:40,613 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:40,845 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:40,851 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:40,852 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:59:40,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:40 BoogieIcfgContainer [2022-11-02 20:59:40,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:40,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:40,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:40,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:40,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:40" (1/3) ... [2022-11-02 20:59:40,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b91f2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:40, skipping insertion in model container [2022-11-02 20:59:40,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:40" (2/3) ... [2022-11-02 20:59:40,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b91f2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:40, skipping insertion in model container [2022-11-02 20:59:40,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:40" (3/3) ... [2022-11-02 20:59:40,864 INFO L112 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2022-11-02 20:59:40,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:40,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:59:40,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:40,992 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;@53d0cef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:40,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:59:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:41,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:59:41,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:41,009 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:41,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -141219973, now seen corresponding path program 1 times [2022-11-02 20:59:41,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:41,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364074940] [2022-11-02 20:59:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:41,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:59:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:59:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:59:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:59:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364074940] [2022-11-02 20:59:41,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364074940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:41,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932234028] [2022-11-02 20:59:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:41,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:41,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:59:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:41,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:41,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:59:41,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:41,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932234028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:41,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:41,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:59:41,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867282246] [2022-11-02 20:59:41,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:41,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:41,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:41,735 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:59:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:41,767 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-02 20:59:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:41,770 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-02 20:59:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:41,777 INFO L225 Difference]: With dead ends: 50 [2022-11-02 20:59:41,777 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 20:59:41,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:41,784 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 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 20:59:41,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 20:59:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-02 20:59:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-02 20:59:41,824 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-11-02 20:59:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:41,824 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-02 20:59:41,824 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:59:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-02 20:59:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:59:41,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:41,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:41,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:42,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:42,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -618478211, now seen corresponding path program 1 times [2022-11-02 20:59:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073223381] [2022-11-02 20:59:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:59:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:59:42,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:42,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073223381] [2022-11-02 20:59:42,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073223381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229004515] [2022-11-02 20:59:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:42,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:42,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:42,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:59:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:42,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:59:42,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:42,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229004515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:42,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:42,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:59:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375280438] [2022-11-02 20:59:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:42,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:59:42,395 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:42,407 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-02 20:59:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:42,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-02 20:59:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:42,409 INFO L225 Difference]: With dead ends: 42 [2022-11-02 20:59:42,409 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 20:59:42,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 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 20:59:42,412 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 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 20:59:42,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 20:59:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-02 20:59:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 20:59:42,418 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-11-02 20:59:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:42,419 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 20:59:42,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 20:59:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:59:42,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:42,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:42,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:42,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:42,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1511029509, now seen corresponding path program 1 times [2022-11-02 20:59:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:42,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503218983] [2022-11-02 20:59:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:59:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:59:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:59:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:59:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503218983] [2022-11-02 20:59:42,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503218983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:42,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364630295] [2022-11-02 20:59:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:42,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:42,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:59:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:42,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:59:42,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:42,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364630295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:42,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:42,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:59:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721926764] [2022-11-02 20:59:42,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:42,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:42,916 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:42,938 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-02 20:59:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-02 20:59:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:42,941 INFO L225 Difference]: With dead ends: 39 [2022-11-02 20:59:42,941 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:59:42,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:42,945 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 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 20:59:42,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:59:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-02 20:59:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-02 20:59:42,950 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-11-02 20:59:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:42,951 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-02 20:59:42,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:59:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-02 20:59:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:59:42,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:42,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:42,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:43,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1553738215, now seen corresponding path program 1 times [2022-11-02 20:59:43,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943926369] [2022-11-02 20:59:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:43,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:59:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:59:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:59:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:59:43,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:43,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943926369] [2022-11-02 20:59:43,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943926369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:43,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328990469] [2022-11-02 20:59:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:43,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:43,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:43,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:43,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:59:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:43,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:59:43,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:59:43,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328990469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:43,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:43,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-02 20:59:43,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220416312] [2022-11-02 20:59:43,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:43,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:59:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:59:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:43,555 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:59:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:43,599 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-11-02 20:59:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:43,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-11-02 20:59:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:43,601 INFO L225 Difference]: With dead ends: 54 [2022-11-02 20:59:43,601 INFO L226 Difference]: Without dead ends: 34 [2022-11-02 20:59:43,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:43,602 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:43,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-02 20:59:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-02 20:59:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-02 20:59:43,609 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-11-02 20:59:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:43,609 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-02 20:59:43,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:59:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-02 20:59:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:59:43,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:43,611 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:43,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:43,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:43,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1124150243, now seen corresponding path program 2 times [2022-11-02 20:59:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:43,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101980520] [2022-11-02 20:59:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:59:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:59:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:59:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 20:59:43,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101980520] [2022-11-02 20:59:43,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101980520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:43,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581595022] [2022-11-02 20:59:43,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:59:43,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:43,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:43,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:59:44,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:59:44,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:44,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:59:44,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:59:44,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:59:44,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581595022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:44,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:44,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-02 20:59:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413273574] [2022-11-02 20:59:44,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:44,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:59:44,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:44,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:59:44,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:59:44,321 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:59:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:44,414 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-11-02 20:59:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:44,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-11-02 20:59:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:44,418 INFO L225 Difference]: With dead ends: 70 [2022-11-02 20:59:44,418 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:59:44,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 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 20:59:44,419 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:44,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:59:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-02 20:59:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-02 20:59:44,427 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-11-02 20:59:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:44,427 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-02 20:59:44,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:59:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-02 20:59:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:59:44,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:44,429 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:44,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:44,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:44,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1238744391, now seen corresponding path program 3 times [2022-11-02 20:59:44,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:44,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369830242] [2022-11-02 20:59:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:44,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:59:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:44,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:59:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:44,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:59:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:59:44,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:44,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369830242] [2022-11-02 20:59:44,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369830242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:44,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955636570] [2022-11-02 20:59:44,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:59:44,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:44,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:44,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:44,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:59:44,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:59:44,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:44,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:44,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:59:44,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:59:45,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955636570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:45,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:45,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-02 20:59:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454621067] [2022-11-02 20:59:45,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:59:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:45,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:59:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:45,027 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:59:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:45,055 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-11-02 20:59:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:45,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-11-02 20:59:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:45,056 INFO L225 Difference]: With dead ends: 78 [2022-11-02 20:59:45,056 INFO L226 Difference]: Without dead ends: 55 [2022-11-02 20:59:45,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:45,058 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:45,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-02 20:59:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-02 20:59:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-02 20:59:45,066 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2022-11-02 20:59:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:45,066 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-02 20:59:45,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:59:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-02 20:59:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:59:45,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:45,068 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:45,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 20:59:45,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:45,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 756543039, now seen corresponding path program 4 times [2022-11-02 20:59:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:45,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130477119] [2022-11-02 20:59:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:45,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:59:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:59:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-02 20:59:45,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130477119] [2022-11-02 20:59:45,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130477119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558278657] [2022-11-02 20:59:45,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:59:45,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:45,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:45,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:45,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:59:45,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:59:45,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:45,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:59:45,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-02 20:59:45,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-02 20:59:45,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558278657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:45,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:45,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-02 20:59:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33191006] [2022-11-02 20:59:45,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:45,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:59:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:59:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:45,849 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:45,889 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2022-11-02 20:59:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:59:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2022-11-02 20:59:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:45,891 INFO L225 Difference]: With dead ends: 94 [2022-11-02 20:59:45,891 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 20:59:45,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:45,898 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:45,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:45,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 20:59:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-02 20:59:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-11-02 20:59:45,905 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 88 [2022-11-02 20:59:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:45,906 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-11-02 20:59:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-11-02 20:59:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:59:45,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:45,908 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:45,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:59:46,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:46,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 953202487, now seen corresponding path program 5 times [2022-11-02 20:59:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:46,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410808041] [2022-11-02 20:59:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:59:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:59:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-02 20:59:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-02 20:59:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:46,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410808041] [2022-11-02 20:59:46,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410808041] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:46,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118203830] [2022-11-02 20:59:46,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:59:46,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:46,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:46,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:46,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:59:46,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-02 20:59:46,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:46,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:46,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 450 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-11-02 20:59:46,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-02 20:59:47,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118203830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:47,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:47,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-02 20:59:47,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725984218] [2022-11-02 20:59:47,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:47,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:59:47,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:59:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:47,027 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:59:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:47,063 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-11-02 20:59:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:59:47,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-11-02 20:59:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:47,068 INFO L225 Difference]: With dead ends: 102 [2022-11-02 20:59:47,068 INFO L226 Difference]: Without dead ends: 71 [2022-11-02 20:59:47,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:59:47,070 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:47,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-02 20:59:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-02 20:59:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-11-02 20:59:47,080 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 112 [2022-11-02 20:59:47,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:47,081 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-11-02 20:59:47,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:59:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-11-02 20:59:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 20:59:47,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:47,083 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:47,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:47,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:47,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1215823185, now seen corresponding path program 6 times [2022-11-02 20:59:47,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:47,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390055009] [2022-11-02 20:59:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:59:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:59:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:59:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-02 20:59:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390055009] [2022-11-02 20:59:47,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390055009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846162859] [2022-11-02 20:59:47,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:59:47,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:47,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:47,591 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:47,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:59:48,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-02 20:59:48,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:59:48,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:59:48,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 450 proven. 36 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-11-02 20:59:48,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:59:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-02 20:59:48,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846162859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:59:48,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:59:48,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-02 20:59:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840191292] [2022-11-02 20:59:48,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:59:48,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:59:48,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:59:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:48,347 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:59:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:48,392 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-02 20:59:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:59:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-11-02 20:59:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:48,394 INFO L225 Difference]: With dead ends: 108 [2022-11-02 20:59:48,394 INFO L226 Difference]: Without dead ends: 77 [2022-11-02 20:59:48,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:48,396 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:48,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-02 20:59:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-02 20:59:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:59:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-11-02 20:59:48,403 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2022-11-02 20:59:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:48,404 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-11-02 20:59:48,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:59:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-11-02 20:59:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-02 20:59:48,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:48,406 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:48,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:48,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:59:48,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1982748809, now seen corresponding path program 7 times [2022-11-02 20:59:48,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:48,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224264241] [2022-11-02 20:59:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 21:00:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 21:00:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:00:33,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:33,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224264241] [2022-11-02 21:00:33,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224264241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:33,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345575366] [2022-11-02 21:00:33,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:00:33,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:33,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:33,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_809bbf36-63ba-4727-bf0f-bb41cdafb08b/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:00:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,383 WARN L261 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 262 conjunts are in the unsatisfiable core [2022-11-02 21:00:34,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:37,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:37,086 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:37,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 464 treesize of output 178 [2022-11-02 21:00:40,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:40,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:40,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:40,866 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 21:00:40,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 844 treesize of output 307 [2022-11-02 21:00:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:43,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:43,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:43,937 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 21:00:43,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 810 treesize of output 307 [2022-11-02 21:00:45,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:45,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:45,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:45,519 INFO L356 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-11-02 21:00:45,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 794 treesize of output 310 [2022-11-02 21:00:46,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:46,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:46,941 INFO L356 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-11-02 21:00:46,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 797 treesize of output 313 [2022-11-02 21:00:48,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:48,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:48,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:48,386 INFO L356 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2022-11-02 21:00:48,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 824 treesize of output 313 [2022-11-02 21:00:49,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:49,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:49,921 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 21:00:49,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-11-02 21:00:51,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:51,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:51,483 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 21:00:51,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-11-02 21:00:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:53,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:53,065 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-02 21:00:53,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2022-11-02 21:00:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:54,673 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:54,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 787 treesize of output 284 [2022-11-02 21:00:55,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:00:55,865 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:55,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 112 treesize of output 106 [2022-11-02 21:00:58,252 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:58,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 633 treesize of output 193 [2022-11-02 21:00:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-02 21:00:59,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:43,518 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:43,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 599 treesize of output 1 [2022-11-02 21:01:49,624 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:49,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 641 treesize of output 1757