./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bAnd2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/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_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/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_5701fe41-8bd9-49b4-963c-9a6b6624fb74/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 a719405da03132817ea2d2d0b1cf4a57bb1050c6860d4dd23b83fe81ff2289e3 --- 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 21:09:59,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:59,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:59,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:59,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:59,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:59,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:59,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:59,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:59,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:59,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:59,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:59,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:59,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:59,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:59,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:59,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:59,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:59,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:59,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:59,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:59,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:59,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:59,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:59,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:59,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:59,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:59,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:59,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:59,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:59,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:59,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:59,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:59,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:59,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:59,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:59,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:59,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:59,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:59,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:59,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:59,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:09:59,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:59,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:59,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:59,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:59,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:59,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:59,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:59,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:59,712 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:59,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:59,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:09:59,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:59,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:09:59,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:59,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:59,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:59,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:59,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:09:59,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:59,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:59,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:59,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:59,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:59,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:59,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:59,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:59,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:59,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:59,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:59,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:59,721 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:09:59,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:09:59,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:59,722 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_5701fe41-8bd9-49b4-963c-9a6b6624fb74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a719405da03132817ea2d2d0b1cf4a57bb1050c6860d4dd23b83fe81ff2289e3 [2022-11-02 21:10:00,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:00,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:00,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:00,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:00,168 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:00,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-crafted/bAnd2.i [2022-11-02 21:10:00,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/data/0d154c509/f15fb53b7c074a0a99e5e72f1c9d5ffc/FLAGd8d414ccd [2022-11-02 21:10:00,811 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:00,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/sv-benchmarks/c/array-crafted/bAnd2.i [2022-11-02 21:10:00,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/data/0d154c509/f15fb53b7c074a0a99e5e72f1c9d5ffc/FLAGd8d414ccd [2022-11-02 21:10:01,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/data/0d154c509/f15fb53b7c074a0a99e5e72f1c9d5ffc [2022-11-02 21:10:01,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:01,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:01,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:01,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:01,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:01,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f24dc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01, skipping insertion in model container [2022-11-02 21:10:01,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:01,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:01,503 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_5701fe41-8bd9-49b4-963c-9a6b6624fb74/sv-benchmarks/c/array-crafted/bAnd2.i[1296,1309] [2022-11-02 21:10:01,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:01,521 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:01,565 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_5701fe41-8bd9-49b4-963c-9a6b6624fb74/sv-benchmarks/c/array-crafted/bAnd2.i[1296,1309] [2022-11-02 21:10:01,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:01,583 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:01,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01 WrapperNode [2022-11-02 21:10:01,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:01,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:01,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:01,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:01,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,646 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-02 21:10:01,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:01,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:01,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:01,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:01,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:01,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:01,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:01,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:01,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (1/1) ... [2022-11-02 21:10:01,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:01,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:01,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:01,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:10:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:10:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:10:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:10:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-11-02 21:10:01,779 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-11-02 21:10:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:01,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:10:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:10:01,867 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:01,870 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:02,060 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:02,067 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:02,067 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 21:10:02,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:02 BoogieIcfgContainer [2022-11-02 21:10:02,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:02,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:02,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:02,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:02,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:01" (1/3) ... [2022-11-02 21:10:02,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19169c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:02, skipping insertion in model container [2022-11-02 21:10:02,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:01" (2/3) ... [2022-11-02 21:10:02,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19169c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:02, skipping insertion in model container [2022-11-02 21:10:02,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:02" (3/3) ... [2022-11-02 21:10:02,080 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd2.i [2022-11-02 21:10:02,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:02,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:10:02,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:02,175 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;@78607fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:02,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:10:02,181 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 21:10:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:10:02,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:02,194 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 21:10:02,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2022-11-02 21:10:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:02,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421889756] [2022-11-02 21:10:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:10:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:10:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 21:10:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,713 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 21:10:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:02,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421889756] [2022-11-02 21:10:02,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421889756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:02,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844092562] [2022-11-02 21:10:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:02,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:02,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:02,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:02,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:10:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:10:02,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:02,859 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 21:10:02,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:02,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844092562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:02,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:02,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 21:10:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456413457] [2022-11-02 21:10:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:02,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:02,904 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 21:10:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:02,941 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-02 21:10:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:02,944 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 21:10:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:02,953 INFO L225 Difference]: With dead ends: 50 [2022-11-02 21:10:02,953 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 21:10:02,957 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 21:10:02,961 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 21:10:02,963 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 21:10:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 21:10:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-02 21:10:03,004 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 21:10:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-02 21:10:03,007 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-11-02 21:10:03,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:03,008 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-02 21:10:03,008 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 21:10:03,008 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-02 21:10:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:10:03,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:03,011 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 21:10:03,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:10:03,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:03,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2022-11-02 21:10:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777347934] [2022-11-02 21:10:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 21:10:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 21:10:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,497 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 21:10:03,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777347934] [2022-11-02 21:10:03,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777347934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:03,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840940620] [2022-11-02 21:10:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:03,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:03,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:03,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:10:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:10:03,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:03,681 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 21:10:03,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:03,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840940620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:03,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:03,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 21:10:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105829447] [2022-11-02 21:10:03,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:03,690 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 21:10:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:03,706 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-02 21:10:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:03,707 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 21:10:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:03,708 INFO L225 Difference]: With dead ends: 42 [2022-11-02 21:10:03,708 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 21:10:03,709 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 21:10:03,711 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 21:10:03,712 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 21:10:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 21:10:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-02 21:10:03,717 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 21:10:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 21:10:03,719 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-11-02 21:10:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:03,720 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 21:10:03,720 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 21:10:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 21:10:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:10:03,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:03,722 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 21:10:03,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:03,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-02 21:10:03,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2022-11-02 21:10:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576020745] [2022-11-02 21:10:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 21:10:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:10:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:10:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,226 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 21:10:04,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576020745] [2022-11-02 21:10:04,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576020745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:04,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658564291] [2022-11-02 21:10:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:04,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:04,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:04,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:04,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:10:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:10:04,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:04,403 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 21:10:04,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:04,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658564291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:04,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:04,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 21:10:04,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164076834] [2022-11-02 21:10:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:04,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:10:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:10:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:04,407 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 21:10:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:04,427 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-02 21:10:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:10:04,428 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 21:10:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:04,429 INFO L225 Difference]: With dead ends: 39 [2022-11-02 21:10:04,430 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 21:10:04,431 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 21:10:04,434 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 21:10:04,436 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 21:10:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 21:10:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-02 21:10:04,448 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 21:10:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-02 21:10:04,452 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-11-02 21:10:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:04,457 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-02 21:10:04,458 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 21:10:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-02 21:10:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 21:10:04,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:04,459 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 21:10:04,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:04,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:04,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:04,661 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2022-11-02 21:10:04,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:04,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404155017] [2022-11-02 21:10:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:04,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 21:10:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:10:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 21:10:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,030 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 21:10:05,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:05,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404155017] [2022-11-02 21:10:05,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404155017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:05,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631383564] [2022-11-02 21:10:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:05,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:05,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:05,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:05,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:10:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:10:05,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:05,209 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 21:10:05,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:05,288 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 21:10:05,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631383564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:05,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:05,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-02 21:10:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811120236] [2022-11-02 21:10:05,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:10:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:10:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:05,296 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 21:10:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:05,389 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-11-02 21:10:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:05,390 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 21:10:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:05,391 INFO L225 Difference]: With dead ends: 54 [2022-11-02 21:10:05,391 INFO L226 Difference]: Without dead ends: 34 [2022-11-02 21:10:05,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:05,393 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:05,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-02 21:10:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-02 21:10:05,408 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 21:10:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-02 21:10:05,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-11-02 21:10:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:05,410 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-02 21:10:05,410 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 21:10:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-02 21:10:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 21:10:05,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:05,412 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 21:10:05,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:05,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:05,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1299679203, now seen corresponding path program 2 times [2022-11-02 21:10:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:05,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973604326] [2022-11-02 21:10:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 21:10:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:10:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:10:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,865 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 21:10:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:05,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973604326] [2022-11-02 21:10:05,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973604326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:05,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638069618] [2022-11-02 21:10:05,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:05,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:05,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:05,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:10:05,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:05,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:06,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:06,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:06,063 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 21:10:06,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:06,188 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 21:10:06,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638069618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:06,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:06,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-02 21:10:06,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451373428] [2022-11-02 21:10:06,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:06,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:06,192 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 21:10:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:06,271 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-11-02 21:10:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:10:06,272 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 21:10:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:06,273 INFO L225 Difference]: With dead ends: 70 [2022-11-02 21:10:06,273 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 21:10:06,274 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 21:10:06,275 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 21:10:06,275 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 21:10:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 21:10:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-02 21:10:06,283 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 21:10:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-02 21:10:06,284 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-11-02 21:10:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:06,285 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-02 21:10:06,285 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 21:10:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-02 21:10:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 21:10:06,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:06,287 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 21:10:06,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:06,514 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash 936210247, now seen corresponding path program 3 times [2022-11-02 21:10:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:06,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504760720] [2022-11-02 21:10:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:06,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:10:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 21:10:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:10:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:06,832 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 21:10:06,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504760720] [2022-11-02 21:10:06,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504760720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:06,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605779133] [2022-11-02 21:10:06,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:10:06,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:06,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:06,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:06,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:10:06,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 21:10:06,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:06,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:10:06,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:07,005 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 21:10:07,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:07,075 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 21:10:07,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605779133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:07,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:07,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-02 21:10:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922614515] [2022-11-02 21:10:07,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:07,078 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 21:10:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:07,115 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-11-02 21:10:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:07,115 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 21:10:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:07,117 INFO L225 Difference]: With dead ends: 78 [2022-11-02 21:10:07,117 INFO L226 Difference]: Without dead ends: 55 [2022-11-02 21:10:07,117 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 21:10:07,118 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 21:10:07,119 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 21:10:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-02 21:10:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-02 21:10:07,126 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 21:10:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-02 21:10:07,128 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2022-11-02 21:10:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:07,128 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-02 21:10:07,129 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 21:10:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-02 21:10:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 21:10:07,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:07,131 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 21:10:07,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-02 21:10:07,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:07,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:07,351 INFO L85 PathProgramCache]: Analyzing trace with hash 571451455, now seen corresponding path program 4 times [2022-11-02 21:10:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110760179] [2022-11-02 21:10:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:07,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:10:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:10:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 21:10:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 21:10:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110760179] [2022-11-02 21:10:08,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110760179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:08,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978235301] [2022-11-02 21:10:08,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:10:08,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:08,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:08,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:08,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:10:08,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:10:08,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:08,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:10:08,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 21:10:08,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 21:10:08,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978235301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:08,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:08,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-02 21:10:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474265779] [2022-11-02 21:10:08,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 21:10:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 21:10:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:10:08,619 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 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 21:10:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:08,736 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2022-11-02 21:10:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:10:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 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 88 [2022-11-02 21:10:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:08,741 INFO L225 Difference]: With dead ends: 111 [2022-11-02 21:10:08,741 INFO L226 Difference]: Without dead ends: 79 [2022-11-02 21:10:08,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:10:08,747 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 112 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-02 21:10:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-02 21:10:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 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 21:10:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-11-02 21:10:08,764 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 88 [2022-11-02 21:10:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:08,764 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-11-02 21:10:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 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 21:10:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-11-02 21:10:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 21:10:08,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:08,766 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 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 21:10:08,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:08,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:08,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1629281449, now seen corresponding path program 5 times [2022-11-02 21:10:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:08,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760808308] [2022-11-02 21:10:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:10:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 21:10:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:10,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 21:10:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 21:10:10,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760808308] [2022-11-02 21:10:10,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760808308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:10,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82769255] [2022-11-02 21:10:10,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:10:10,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:10,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:10,315 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:10,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:10:12,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-02 21:10:12,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:12,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:10:12,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-02 21:10:12,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-02 21:10:12,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82769255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:12,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:12,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2022-11-02 21:10:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179722248] [2022-11-02 21:10:12,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 21:10:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 21:10:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 21:10:12,755 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:12,943 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2022-11-02 21:10:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:10:12,945 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 112 [2022-11-02 21:10:12,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:12,946 INFO L225 Difference]: With dead ends: 130 [2022-11-02 21:10:12,946 INFO L226 Difference]: Without dead ends: 98 [2022-11-02 21:10:12,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 21:10:12,948 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:12,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 202 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:12,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-02 21:10:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-11-02 21:10:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 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 21:10:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-11-02 21:10:12,966 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 112 [2022-11-02 21:10:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:12,970 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-11-02 21:10:12,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-11-02 21:10:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-02 21:10:12,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:12,978 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 23, 23, 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 21:10:13,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:13,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1848671305, now seen corresponding path program 6 times [2022-11-02 21:10:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:13,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648972551] [2022-11-02 21:10:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 21:10:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:10:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:10:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-11-02 21:10:15,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:15,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648972551] [2022-11-02 21:10:15,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648972551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:15,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949564504] [2022-11-02 21:10:15,029 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:10:15,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:15,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:15,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:15,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:10:15,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-02 21:10:15,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:15,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:10:15,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-11-02 21:10:15,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2022-11-02 21:10:15,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949564504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:15,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:15,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5] total 32 [2022-11-02 21:10:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376699097] [2022-11-02 21:10:15,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:15,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 21:10:15,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 21:10:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:10:15,610 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,749 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2022-11-02 21:10:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:10:15,750 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2022-11-02 21:10:15,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,752 INFO L225 Difference]: With dead ends: 156 [2022-11-02 21:10:15,752 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 21:10:15,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:10:15,757 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 178 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 21:10:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-11-02 21:10:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 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 21:10:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-11-02 21:10:15,776 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 162 [2022-11-02 21:10:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,776 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-11-02 21:10:15,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-11-02 21:10:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 21:10:15,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,779 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 24, 24, 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 21:10:15,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:16,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:16,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash -627674557, now seen corresponding path program 7 times [2022-11-02 21:10:16,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:16,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319320299] [2022-11-02 21:10:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:10:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 21:10:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 21:10:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:17,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:17,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319320299] [2022-11-02 21:10:17,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319320299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:17,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121829185] [2022-11-02 21:10:17,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:10:17,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:17,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:17,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:10:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:18,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:10:18,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:18,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121829185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:19,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:19,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2022-11-02 21:10:19,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288456731] [2022-11-02 21:10:19,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 21:10:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:19,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 21:10:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 21:10:19,324 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 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 21:10:19,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:19,514 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2022-11-02 21:10:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 21:10:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 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 172 [2022-11-02 21:10:19,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:19,516 INFO L225 Difference]: With dead ends: 215 [2022-11-02 21:10:19,516 INFO L226 Difference]: Without dead ends: 159 [2022-11-02 21:10:19,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 21:10:19,519 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:19,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 112 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-02 21:10:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-11-02 21:10:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 states have internal predecessors, (157), 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 21:10:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2022-11-02 21:10:19,530 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 172 [2022-11-02 21:10:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:19,530 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2022-11-02 21:10:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 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 21:10:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2022-11-02 21:10:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-02 21:10:19,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:19,534 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 42, 42, 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 21:10:19,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:19,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:10:19,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1171263479, now seen corresponding path program 8 times [2022-11-02 21:10:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:19,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410326590] [2022-11-02 21:10:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:19,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 21:10:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-02 21:10:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-02 21:10:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:23,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:23,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410326590] [2022-11-02 21:10:23,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410326590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:23,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474469386] [2022-11-02 21:10:23,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:23,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:23,588 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:10:23,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:23,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:23,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 21:10:23,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:24,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:28,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474469386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:28,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:28,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 105 [2022-11-02 21:10:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198243320] [2022-11-02 21:10:28,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-11-02 21:10:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-11-02 21:10:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2022-11-02 21:10:28,183 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 105 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 105 states have internal predecessors, (229), 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 21:10:28,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:28,652 INFO L93 Difference]: Finished difference Result 319 states and 378 transitions. [2022-11-02 21:10:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-02 21:10:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 105 states have internal predecessors, (229), 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 224 [2022-11-02 21:10:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:28,655 INFO L225 Difference]: With dead ends: 319 [2022-11-02 21:10:28,655 INFO L226 Difference]: Without dead ends: 263 [2022-11-02 21:10:28,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2022-11-02 21:10:28,660 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 153 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:28,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 178 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-02 21:10:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-02 21:10:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.0116279069767442) internal successors, (261), 258 states have internal predecessors, (261), 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 21:10:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2022-11-02 21:10:28,681 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 224 [2022-11-02 21:10:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:28,683 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2022-11-02 21:10:28,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 105 states have internal predecessors, (229), 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 21:10:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2022-11-02 21:10:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-02 21:10:28,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:28,692 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 42, 42, 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 21:10:28,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-02 21:10:28,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:10:28,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:28,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1664693599, now seen corresponding path program 9 times [2022-11-02 21:10:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:28,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154265698] [2022-11-02 21:10:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:28,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-02 21:10:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-11-02 21:10:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-11-02 21:10:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12303 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 21:10:38,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:38,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154265698] [2022-11-02 21:10:38,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154265698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:38,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623259360] [2022-11-02 21:10:38,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:10:38,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:38,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:38,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:38,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:10:39,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 21:10:39,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:10:39,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12303 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 11417 trivial. 0 not checked. [2022-11-02 21:10:39,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12303 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12267 trivial. 0 not checked. [2022-11-02 21:10:40,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623259360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:40,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:40,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 9, 9] total 119 [2022-11-02 21:10:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948066729] [2022-11-02 21:10:40,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:40,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-02 21:10:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-02 21:10:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2022-11-02 21:10:40,071 INFO L87 Difference]: Start difference. First operand 263 states and 267 transitions. Second operand has 119 states, 119 states have (on average 2.19327731092437) internal successors, (261), 119 states have internal predecessors, (261), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:40,538 INFO L93 Difference]: Finished difference Result 338 states and 354 transitions. [2022-11-02 21:10:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-02 21:10:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.19327731092437) internal successors, (261), 119 states have internal predecessors, (261), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 328 [2022-11-02 21:10:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:40,547 INFO L225 Difference]: With dead ends: 338 [2022-11-02 21:10:40,547 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 21:10:40,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2022-11-02 21:10:40,552 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 117 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:40,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 279 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 21:10:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2022-11-02 21:10:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.0108695652173914) internal successors, (279), 276 states have internal predecessors, (279), 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 21:10:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 285 transitions. [2022-11-02 21:10:40,565 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 285 transitions. Word has length 328 [2022-11-02 21:10:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:40,565 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 285 transitions. [2022-11-02 21:10:40,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.19327731092437) internal successors, (261), 119 states have internal predecessors, (261), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 285 transitions. [2022-11-02 21:10:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 21:10:40,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:40,572 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:40,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:40,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:10:40,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -117033647, now seen corresponding path program 10 times [2022-11-02 21:10:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:40,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866742362] [2022-11-02 21:10:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-11-02 21:10:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-02 21:10:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-11-02 21:10:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12668 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-11-02 21:10:50,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:50,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866742362] [2022-11-02 21:10:50,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866742362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:50,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201386680] [2022-11-02 21:10:50,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:10:50,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:50,123 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:10:50,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:10:50,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:10:50,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:50,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:50,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12668 backedges. 1271 proven. 196 refuted. 0 times theorem prover too weak. 11201 trivial. 0 not checked. [2022-11-02 21:10:51,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12668 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 11624 trivial. 0 not checked. [2022-11-02 21:10:52,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201386680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:52,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:10:52,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 17, 17] total 136 [2022-11-02 21:10:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859824811] [2022-11-02 21:10:52,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:52,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-11-02 21:10:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:52,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-11-02 21:10:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6060, Invalid=12300, Unknown=0, NotChecked=0, Total=18360 [2022-11-02 21:10:52,487 INFO L87 Difference]: Start difference. First operand 281 states and 285 transitions. Second operand has 136 states, 136 states have (on average 2.1691176470588234) internal successors, (295), 136 states have internal predecessors, (295), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:53,083 INFO L93 Difference]: Finished difference Result 388 states and 415 transitions. [2022-11-02 21:10:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-02 21:10:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.1691176470588234) internal successors, (295), 136 states have internal predecessors, (295), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 21:10:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:53,086 INFO L225 Difference]: With dead ends: 388 [2022-11-02 21:10:53,086 INFO L226 Difference]: Without dead ends: 316 [2022-11-02 21:10:53,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3090 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=6060, Invalid=12300, Unknown=0, NotChecked=0, Total=18360 [2022-11-02 21:10:53,090 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 134 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:53,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 242 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:10:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-02 21:10:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-11-02 21:10:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.0096774193548388) internal successors, (313), 310 states have internal predecessors, (313), 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 21:10:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 319 transitions. [2022-11-02 21:10:53,107 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 319 transitions. Word has length 346 [2022-11-02 21:10:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:53,107 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 319 transitions. [2022-11-02 21:10:53,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.1691176470588234) internal successors, (295), 136 states have internal predecessors, (295), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 21:10:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 319 transitions. [2022-11-02 21:10:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-02 21:10:53,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:53,117 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 90, 90, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:53,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:10:53,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -29376077, now seen corresponding path program 11 times [2022-11-02 21:10:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:53,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086319144] [2022-11-02 21:10:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-02 21:11:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-02 21:11:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:03,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-11-02 21:11:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19307 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 8491 trivial. 0 not checked. [2022-11-02 21:11:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:04,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086319144] [2022-11-02 21:11:04,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086319144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:04,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325976193] [2022-11-02 21:11:04,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:11:04,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:04,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:04,063 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:04,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5701fe41-8bd9-49b4-963c-9a6b6624fb74/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process