./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/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_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/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 64bit --witnessprinter.graph.data.programhash 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 --- 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 21:06:52,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:06:52,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:06:52,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:06:52,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:06:52,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:06:52,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:06:52,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:06:52,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:06:52,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:06:52,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:06:52,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:06:52,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:06:52,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:06:52,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:06:52,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:06:52,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:06:52,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:06:52,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:06:52,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:06:52,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:06:52,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:06:52,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:06:52,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:06:52,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:06:52,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:06:52,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:06:52,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:06:52,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:06:52,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:06:52,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:06:52,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:06:52,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:06:52,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:06:52,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:06:52,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:06:52,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:06:52,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:06:52,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:06:52,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:06:52,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:06:52,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:06:52,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:06:52,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:06:52,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:06:52,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:06:52,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:06:52,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:06:52,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:06:52,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:06:52,782 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:06:52,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:06:52,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:06:52,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:06:52,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:06:52,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:06:52,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:06:52,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:06:52,785 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:06:52,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:06:52,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:06:52,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:06:52,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:06:52,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:52,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:06:52,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:06:52,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:06:52,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:06:52,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:06:52,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:06:52,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:06:52,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:06:52,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 [2022-11-02 21:06:53,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:06:53,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:06:53,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:06:53,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:06:53,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:06:53,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-02 21:06:53,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/111399b9c/0b4a7b54b4914275bf9ba9c8215b5b58/FLAG45fb84de7 [2022-11-02 21:06:53,662 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:06:53,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-02 21:06:53,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/111399b9c/0b4a7b54b4914275bf9ba9c8215b5b58/FLAG45fb84de7 [2022-11-02 21:06:54,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/111399b9c/0b4a7b54b4914275bf9ba9c8215b5b58 [2022-11-02 21:06:54,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:06:54,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:06:54,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:54,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:06:54,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:06:54,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdb3c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54, skipping insertion in model container [2022-11-02 21:06:54,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:06:54,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:06:54,246 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_31c34ded-d73c-4977-930d-cd95e0ae2e08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-02 21:06:54,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:54,332 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:06:54,342 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_31c34ded-d73c-4977-930d-cd95e0ae2e08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-02 21:06:54,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:54,401 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:06:54,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54 WrapperNode [2022-11-02 21:06:54,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:54,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:54,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:06:54,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:06:54,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,473 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2022-11-02 21:06:54,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:54,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:06:54,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:06:54,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:06:54,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,520 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:06:54,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:06:54,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:06:54,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:06:54,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (1/1) ... [2022-11-02 21:06:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:54,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:54,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:06:54,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:06:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:06:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:06:54,705 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:06:54,707 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:06:54,964 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:06:54,970 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:06:54,971 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:06:54,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:54 BoogieIcfgContainer [2022-11-02 21:06:54,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:06:54,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:06:54,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:06:54,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:06:54,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:06:54" (1/3) ... [2022-11-02 21:06:54,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52527c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:54, skipping insertion in model container [2022-11-02 21:06:54,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:54" (2/3) ... [2022-11-02 21:06:54,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52527c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:54, skipping insertion in model container [2022-11-02 21:06:54,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:54" (3/3) ... [2022-11-02 21:06:54,982 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.dyn_partition.c [2022-11-02 21:06:55,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:06:55,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:06:55,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:06:55,094 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;@bfd8eaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:06:55,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:06:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:06:55,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:55,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:06:55,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:06:55,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:55,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725443876] [2022-11-02 21:06:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:06:55,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:06:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:06:55,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:06:55,387 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:06:55,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:06:55,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:06:55,397 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:06:55,401 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:06:55,417 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:06:55,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:06:55 BoogieIcfgContainer [2022-11-02 21:06:55,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:06:55,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:06:55,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:06:55,430 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:06:55,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:54" (3/4) ... [2022-11-02 21:06:55,437 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:06:55,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:06:55,439 INFO L158 Benchmark]: Toolchain (without parser) took 1423.98ms. Allocated memory is still 119.5MB. Free memory was 90.6MB in the beginning and 53.8MB in the end (delta: 36.8MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2022-11-02 21:06:55,440 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:06:55,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.83ms. Allocated memory is still 119.5MB. Free memory was 90.4MB in the beginning and 91.9MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:06:55,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.17ms. Allocated memory is still 119.5MB. Free memory was 91.9MB in the beginning and 89.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:06:55,444 INFO L158 Benchmark]: Boogie Preprocessor took 54.68ms. Allocated memory is still 119.5MB. Free memory was 89.5MB in the beginning and 88.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:06:55,451 INFO L158 Benchmark]: RCFGBuilder took 441.60ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 73.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 21:06:55,452 INFO L158 Benchmark]: TraceAbstraction took 451.34ms. Allocated memory is still 119.5MB. Free memory was 72.7MB in the beginning and 54.2MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 21:06:55,454 INFO L158 Benchmark]: Witness Printer took 7.97ms. Allocated memory is still 119.5MB. Free memory was 54.2MB in the beginning and 53.8MB in the end (delta: 360.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:06:55,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.83ms. Allocated memory is still 119.5MB. Free memory was 90.4MB in the beginning and 91.9MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.17ms. Allocated memory is still 119.5MB. Free memory was 91.9MB in the beginning and 89.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.68ms. Allocated memory is still 119.5MB. Free memory was 89.5MB in the beginning and 88.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 441.60ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 73.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 451.34ms. Allocated memory is still 119.5MB. Free memory was 72.7MB in the beginning and 54.2MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.97ms. Allocated memory is still 119.5MB. Free memory was 54.2MB in the beginning and 53.8MB in the end (delta: 360.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 65, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 3); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (3 - 1); [L31] const SORT_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 32); [L32] const SORT_23 msb_SORT_23 = (SORT_23)1 << (32 - 1); [L34] const SORT_4 var_5 = 0; [L35] const SORT_1 var_13 = 1; [L36] const SORT_1 var_17 = 0; [L37] const SORT_23 var_25 = 1; [L39] SORT_1 input_2; [L40] SORT_1 input_3; [L42] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L43] SORT_4 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L44] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_4 init_7_arg_1 = var_5; [L48] state_6 = init_7_arg_1 [L49] SORT_4 init_9_arg_1 = var_5; [L50] state_8 = init_9_arg_1 [L51] SORT_1 init_19_arg_1 = var_17; [L52] state_18 = init_19_arg_1 [L53] SORT_1 init_21_arg_1 = var_17; [L54] state_20 = init_21_arg_1 VAL [init_19_arg_1=0, init_21_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_23=4294967295, mask_SORT_4=7, msb_SORT_1=1, msb_SORT_23=2147483648, msb_SORT_4=4, state_18=0, state_20=0, state_6=0, state_8=0, var_13=1, var_17=0, var_25=1, var_5=0] [L57] input_2 = __VERIFIER_nondet_uchar() [L58] input_3 = __VERIFIER_nondet_uchar() [L61] SORT_4 var_10_arg_0 = state_6; [L62] SORT_4 var_10_arg_1 = state_8; [L63] SORT_1 var_10 = var_10_arg_0 <= var_10_arg_1; [L64] SORT_1 var_14_arg_0 = var_10; [L65] SORT_1 var_14 = ~var_14_arg_0; [L66] SORT_1 var_15_arg_0 = var_13; [L67] SORT_1 var_15_arg_1 = var_14; [L68] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L69] var_15 = var_15 & mask_SORT_1 [L70] SORT_1 bad_16_arg_0 = var_15; [L71] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:06:55,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/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_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/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 64bit --witnessprinter.graph.data.programhash 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 --- 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 21:06:57,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:06:57,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:06:57,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:06:57,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:06:57,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:06:57,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:06:57,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:06:57,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:06:57,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:06:57,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:06:57,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:06:57,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:06:57,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:06:57,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:06:57,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:06:57,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:06:57,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:06:57,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:06:57,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:06:57,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:06:57,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:06:57,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:06:57,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:06:57,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:06:57,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:06:57,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:06:57,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:06:57,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:06:57,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:06:57,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:06:57,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:06:57,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:06:57,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:06:57,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:06:57,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:06:57,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:06:57,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:06:57,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:06:57,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:06:57,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:06:57,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:06:58,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:06:58,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:06:58,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:06:58,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:06:58,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:06:58,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:06:58,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:06:58,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:06:58,053 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:06:58,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:06:58,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:06:58,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:06:58,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:06:58,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:06:58,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:06:58,055 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:06:58,056 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:06:58,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:06:58,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:06:58,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:06:58,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:06:58,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:06:58,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:06:58,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:58,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:06:58,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:06:58,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:06:58,062 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:06:58,062 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:06:58,062 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:06:58,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:06:58,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:06:58,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:06:58,063 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_31c34ded-d73c-4977-930d-cd95e0ae2e08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b04c290f1a7102f69086810812946480d0557325a865f39f1fc1d9d1f1627d8 [2022-11-02 21:06:58,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:06:58,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:06:58,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:06:58,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:06:58,480 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:06:58,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-02 21:06:58,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/0d34c223b/d0e2ddb7fc52418b954e2c248e62a200/FLAG888882f38 [2022-11-02 21:06:59,150 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:06:59,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c [2022-11-02 21:06:59,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/0d34c223b/d0e2ddb7fc52418b954e2c248e62a200/FLAG888882f38 [2022-11-02 21:06:59,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/data/0d34c223b/d0e2ddb7fc52418b954e2c248e62a200 [2022-11-02 21:06:59,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:06:59,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:06:59,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:59,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:06:59,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:06:59,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a72775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59, skipping insertion in model container [2022-11-02 21:06:59,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:06:59,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:06:59,729 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_31c34ded-d73c-4977-930d-cd95e0ae2e08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-02 21:06:59,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:59,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:06:59,852 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_31c34ded-d73c-4977-930d-cd95e0ae2e08/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.dyn_partition.c[1107,1120] [2022-11-02 21:06:59,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:59,902 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:06:59,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59 WrapperNode [2022-11-02 21:06:59,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:59,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:59,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:06:59,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:06:59,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,956 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2022-11-02 21:06:59,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:59,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:06:59,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:06:59,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:06:59,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:06:59,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:07:00,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:00,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:00,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:00,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:00,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (1/1) ... [2022-11-02 21:07:00,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:00,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:00,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:00,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:00,221 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:00,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:00,465 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:00,472 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:00,472 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:07:00,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:00 BoogieIcfgContainer [2022-11-02 21:07:00,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:00,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:00,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:00,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:00,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:06:59" (1/3) ... [2022-11-02 21:07:00,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c3bd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:00, skipping insertion in model container [2022-11-02 21:07:00,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:59" (2/3) ... [2022-11-02 21:07:00,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c3bd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:00, skipping insertion in model container [2022-11-02 21:07:00,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:00" (3/3) ... [2022-11-02 21:07:00,483 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.dyn_partition.c [2022-11-02 21:07:00,502 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:00,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:00,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:00,576 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;@6398480a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:00,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:00,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:07:00,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:00,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:07:00,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:07:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:00,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861761384] [2022-11-02 21:07:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:00,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:00,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:00,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:00,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:07:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:00,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:07:00,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:00,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:00,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:00,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861761384] [2022-11-02 21:07:00,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861761384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:00,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:01,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544528692] [2022-11-02 21:07:01,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:01,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:01,039 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:01,094 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2022-11-02 21:07:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:01,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 21:07:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:01,105 INFO L225 Difference]: With dead ends: 32 [2022-11-02 21:07:01,105 INFO L226 Difference]: Without dead ends: 19 [2022-11-02 21:07:01,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:01,112 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:01,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-02 21:07:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2022-11-02 21:07:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-02 21:07:01,147 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2022-11-02 21:07:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:01,148 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-02 21:07:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-02 21:07:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:07:01,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:01,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:01,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash 505863741, now seen corresponding path program 1 times [2022-11-02 21:07:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975956584] [2022-11-02 21:07:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:01,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:01,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:01,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:07:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:01,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:07:01,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:01,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:01,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975956584] [2022-11-02 21:07:01,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975956584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:01,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:01,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127902150] [2022-11-02 21:07:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:01,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:01,595 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:01,684 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-11-02 21:07:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:07:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:01,686 INFO L225 Difference]: With dead ends: 34 [2022-11-02 21:07:01,686 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 21:07:01,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:01,688 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:01,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 43 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 21:07:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2022-11-02 21:07:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-02 21:07:01,693 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2022-11-02 21:07:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:01,694 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-02 21:07:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-02 21:07:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:07:01,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:01,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:01,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:01,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 504016699, now seen corresponding path program 1 times [2022-11-02 21:07:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:01,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803168529] [2022-11-02 21:07:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:01,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:01,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:01,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:07:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:01,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:07:01,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:02,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:02,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:02,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803168529] [2022-11-02 21:07:02,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803168529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:02,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:02,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:07:02,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502023142] [2022-11-02 21:07:02,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:02,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:07:02,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:07:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:07:02,889 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:03,828 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-02 21:07:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:07:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:07:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:03,830 INFO L225 Difference]: With dead ends: 45 [2022-11-02 21:07:03,830 INFO L226 Difference]: Without dead ends: 43 [2022-11-02 21:07:03,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:07:03,831 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 90 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:03,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 85 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 102 Unchecked, 0.1s Time] [2022-11-02 21:07:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-02 21:07:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2022-11-02 21:07:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-02 21:07:03,844 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 12 [2022-11-02 21:07:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:03,845 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-02 21:07:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-02 21:07:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:07:03,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:03,848 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:03,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:04,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2015943235, now seen corresponding path program 1 times [2022-11-02 21:07:04,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:04,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868013597] [2022-11-02 21:07:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:04,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:04,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:04,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:07:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:04,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:07:04,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:04,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:04,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:04,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868013597] [2022-11-02 21:07:04,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868013597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:04,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:04,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:04,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972600318] [2022-11-02 21:07:04,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:04,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:04,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:04,177 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:04,205 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-02 21:07:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:07:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:04,206 INFO L225 Difference]: With dead ends: 39 [2022-11-02 21:07:04,206 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 21:07:04,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:04,208 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:04,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 21:07:04,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-11-02 21:07:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 21:07:04,213 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2022-11-02 21:07:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:04,214 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 21:07:04,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 21:07:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:07:04,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:04,215 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:04,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:04,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:04,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 140837325, now seen corresponding path program 1 times [2022-11-02 21:07:04,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:04,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126486593] [2022-11-02 21:07:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:04,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:04,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:04,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:07:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:04,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 21:07:04,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:05,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:06,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:06,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126486593] [2022-11-02 21:07:06,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126486593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:06,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:06,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 21:07:06,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495729118] [2022-11-02 21:07:06,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:06,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:07:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:06,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:07:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:07:06,687 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:09,596 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-11-02 21:07:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:07:09,597 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:07:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:09,601 INFO L225 Difference]: With dead ends: 70 [2022-11-02 21:07:09,601 INFO L226 Difference]: Without dead ends: 68 [2022-11-02 21:07:09,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=318, Invalid=2334, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 21:07:09,608 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 83 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:09,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 120 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 265 Unchecked, 0.1s Time] [2022-11-02 21:07:09,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-02 21:07:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2022-11-02 21:07:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 54 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-11-02 21:07:09,628 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 19 [2022-11-02 21:07:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:09,628 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-11-02 21:07:09,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-11-02 21:07:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:07:09,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:09,630 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:09,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:09,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:09,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 138990283, now seen corresponding path program 1 times [2022-11-02 21:07:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:09,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042511047] [2022-11-02 21:07:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:09,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:09,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:07:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:10,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:10,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:10,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042511047] [2022-11-02 21:07:10,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042511047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:10,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:10,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 21:07:10,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347939761] [2022-11-02 21:07:10,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:10,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:07:10,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:07:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:10,094 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:10,188 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2022-11-02 21:07:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:07:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:10,190 INFO L225 Difference]: With dead ends: 99 [2022-11-02 21:07:10,191 INFO L226 Difference]: Without dead ends: 68 [2022-11-02 21:07:10,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:07:10,192 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:10,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 65 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-02 21:07:10,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2022-11-02 21:07:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2022-11-02 21:07:10,201 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 19 [2022-11-02 21:07:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:10,201 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2022-11-02 21:07:10,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-11-02 21:07:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:07:10,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:10,202 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:10,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:10,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:10,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1071281085, now seen corresponding path program 2 times [2022-11-02 21:07:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:10,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372083158] [2022-11-02 21:07:10,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:07:10,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:10,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:07:10,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:07:10,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:10,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:07:10,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:07:10,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:07:10,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372083158] [2022-11-02 21:07:10,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372083158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:10,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:10,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-11-02 21:07:10,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445664633] [2022-11-02 21:07:10,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:10,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:10,663 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:10,724 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2022-11-02 21:07:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 21:07:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:10,730 INFO L225 Difference]: With dead ends: 67 [2022-11-02 21:07:10,730 INFO L226 Difference]: Without dead ends: 49 [2022-11-02 21:07:10,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:10,731 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:10,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 71 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-02 21:07:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2022-11-02 21:07:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-02 21:07:10,738 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 26 [2022-11-02 21:07:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:10,739 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-02 21:07:10,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-02 21:07:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:07:10,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:10,740 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:10,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:10,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:10,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1714843527, now seen corresponding path program 3 times [2022-11-02 21:07:10,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357633181] [2022-11-02 21:07:10,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:07:10,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:10,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:07:11,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:07:11,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:11,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:11,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:07:11,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:11,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:11,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357633181] [2022-11-02 21:07:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357633181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:11,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936311797] [2022-11-02 21:07:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:11,070 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:11,149 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2022-11-02 21:07:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 21:07:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:11,150 INFO L225 Difference]: With dead ends: 61 [2022-11-02 21:07:11,151 INFO L226 Difference]: Without dead ends: 52 [2022-11-02 21:07:11,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:11,152 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:11,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-02 21:07:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2022-11-02 21:07:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-11-02 21:07:11,160 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 26 [2022-11-02 21:07:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:11,160 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-11-02 21:07:11,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-11-02 21:07:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:07:11,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:11,162 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:11,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:11,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1716690569, now seen corresponding path program 4 times [2022-11-02 21:07:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:11,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647149836] [2022-11-02 21:07:11,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:07:11,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:11,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:11,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:07:11,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:07:11,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:11,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-02 21:07:11,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:12,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:15,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:15,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647149836] [2022-11-02 21:07:15,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647149836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:15,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:15,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-02 21:07:15,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130187298] [2022-11-02 21:07:15,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:15,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:07:15,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:07:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:07:15,071 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:21,272 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2022-11-02 21:07:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 21:07:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 21:07:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:21,273 INFO L225 Difference]: With dead ends: 76 [2022-11-02 21:07:21,273 INFO L226 Difference]: Without dead ends: 74 [2022-11-02 21:07:21,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=603, Invalid=4509, Unknown=0, NotChecked=0, Total=5112 [2022-11-02 21:07:21,276 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 115 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:21,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 119 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 184 Invalid, 0 Unknown, 452 Unchecked, 0.2s Time] [2022-11-02 21:07:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-02 21:07:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2022-11-02 21:07:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-11-02 21:07:21,287 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 26 [2022-11-02 21:07:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:21,287 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-11-02 21:07:21,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-11-02 21:07:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:07:21,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:21,289 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:21,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-02 21:07:21,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:21,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash 60163835, now seen corresponding path program 5 times [2022-11-02 21:07:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:21,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547301897] [2022-11-02 21:07:21,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:07:21,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:21,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:21,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:21,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:07:21,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 21:07:21,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:21,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:07:21,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:21,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:21,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:21,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547301897] [2022-11-02 21:07:21,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547301897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:21,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:21,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-02 21:07:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528162707] [2022-11-02 21:07:21,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:07:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:21,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:07:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:21,842 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:22,014 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2022-11-02 21:07:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 21:07:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:22,016 INFO L225 Difference]: With dead ends: 104 [2022-11-02 21:07:22,016 INFO L226 Difference]: Without dead ends: 74 [2022-11-02 21:07:22,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:07:22,017 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:22,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 47 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:22,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-02 21:07:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2022-11-02 21:07:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-11-02 21:07:22,041 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 26 [2022-11-02 21:07:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:22,042 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-11-02 21:07:22,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-11-02 21:07:22,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 21:07:22,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:22,045 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:22,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:22,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:22,258 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash -570516297, now seen corresponding path program 6 times [2022-11-02 21:07:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:22,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442846848] [2022-11-02 21:07:22,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:07:22,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:22,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:22,259 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:22,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:07:22,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-02 21:07:22,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:07:22,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 21:07:22,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 23 proven. 27 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 21:07:22,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:22,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442846848] [2022-11-02 21:07:22,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442846848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:22,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:22,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 21:07:22,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941166454] [2022-11-02 21:07:22,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:22,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:07:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:22,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:07:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:07:22,828 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:22,943 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2022-11-02 21:07:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-02 21:07:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:22,944 INFO L225 Difference]: With dead ends: 74 [2022-11-02 21:07:22,944 INFO L226 Difference]: Without dead ends: 60 [2022-11-02 21:07:22,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:07:22,945 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 44 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:22,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-11-02 21:07:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-02 21:07:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-11-02 21:07:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2022-11-02 21:07:22,956 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 40 [2022-11-02 21:07:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:22,957 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2022-11-02 21:07:22,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2022-11-02 21:07:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 21:07:22,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:22,958 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1] [2022-11-02 21:07:22,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:23,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:23,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1581633547, now seen corresponding path program 7 times [2022-11-02 21:07:23,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:23,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055320629] [2022-11-02 21:07:23,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:07:23,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:23,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:23,173 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:23,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:07:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:23,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:07:23,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 38 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:23,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 38 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:23,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:23,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055320629] [2022-11-02 21:07:23,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055320629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:23,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:23,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 21:07:23,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370531630] [2022-11-02 21:07:23,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:07:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:07:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:07:23,672 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:23,993 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2022-11-02 21:07:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:07:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-02 21:07:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:23,994 INFO L225 Difference]: With dead ends: 76 [2022-11-02 21:07:23,994 INFO L226 Difference]: Without dead ends: 57 [2022-11-02 21:07:23,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:07:23,995 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:23,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 114 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-02 21:07:24,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-11-02 21:07:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2022-11-02 21:07:24,005 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 40 [2022-11-02 21:07:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:24,005 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2022-11-02 21:07:24,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2022-11-02 21:07:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:07:24,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:24,007 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 21:07:24,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:24,214 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2100617045, now seen corresponding path program 8 times [2022-11-02 21:07:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:24,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642809050] [2022-11-02 21:07:24,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:07:24,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:24,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:24,216 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:24,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:07:24,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:07:24,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:24,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-02 21:07:24,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:26,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:07:36,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:36,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642809050] [2022-11-02 21:07:36,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642809050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:36,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:36,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 62 [2022-11-02 21:07:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129563332] [2022-11-02 21:07:36,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:36,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-02 21:07:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-02 21:07:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3541, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 21:07:36,234 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 62 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 62 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:54,598 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2022-11-02 21:07:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-02 21:07:54,599 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 62 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 21:07:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:54,600 INFO L225 Difference]: With dead ends: 112 [2022-11-02 21:07:54,600 INFO L226 Difference]: Without dead ends: 110 [2022-11-02 21:07:54,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=1358, Invalid=13404, Unknown=0, NotChecked=0, Total=14762 [2022-11-02 21:07:54,604 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 218 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 961 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:54,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 171 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 746 Invalid, 0 Unknown, 961 Unchecked, 0.7s Time] [2022-11-02 21:07:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-02 21:07:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2022-11-02 21:07:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2022-11-02 21:07:54,620 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 47 [2022-11-02 21:07:54,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:54,621 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2022-11-02 21:07:54,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 62 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2022-11-02 21:07:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 21:07:54,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:54,622 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 3, 1, 1, 1, 1] [2022-11-02 21:07:54,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:54,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:54,830 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2124760337, now seen corresponding path program 9 times [2022-11-02 21:07:54,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:54,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992108979] [2022-11-02 21:07:54,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:07:54,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:54,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:54,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:54,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:07:55,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 21:07:55,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:55,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-02 21:07:55,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:57,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:10,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:10,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992108979] [2022-11-02 21:08:10,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992108979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:10,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:10,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2022-11-02 21:08:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909624650] [2022-11-02 21:08:10,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:10,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-02 21:08:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:10,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-02 21:08:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=4513, Unknown=0, NotChecked=0, Total=4830 [2022-11-02 21:08:10,703 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 70 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 70 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:35,234 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2022-11-02 21:08:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-02 21:08:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 70 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-02 21:08:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:35,235 INFO L225 Difference]: With dead ends: 113 [2022-11-02 21:08:35,235 INFO L226 Difference]: Without dead ends: 111 [2022-11-02 21:08:35,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=1780, Invalid=15776, Unknown=0, NotChecked=0, Total=17556 [2022-11-02 21:08:35,240 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 313 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 943 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:35,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 259 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 885 Invalid, 0 Unknown, 943 Unchecked, 0.9s Time] [2022-11-02 21:08:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-02 21:08:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-02 21:08:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-11-02 21:08:35,263 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 54 [2022-11-02 21:08:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:35,264 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-11-02 21:08:35,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 70 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-11-02 21:08:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:08:35,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:35,266 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 7, 7, 7, 7, 1, 1, 1, 1] [2022-11-02 21:08:35,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 21:08:35,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:35,480 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash 510805605, now seen corresponding path program 10 times [2022-11-02 21:08:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:35,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390237841] [2022-11-02 21:08:35,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:08:35,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:35,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:35,482 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:35,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c34ded-d73c-4977-930d-cd95e0ae2e08/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:08:35,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:08:35,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:35,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 257 conjunts are in the unsatisfiable core [2022-11-02 21:08:35,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 659 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:08:47,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 659 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:09:49,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:49,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390237841] [2022-11-02 21:09:49,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390237841] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:49,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:49,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 134 [2022-11-02 21:09:49,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725425088] [2022-11-02 21:09:49,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:49,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-11-02 21:09:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:49,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-11-02 21:09:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1020, Invalid=16802, Unknown=0, NotChecked=0, Total=17822 [2022-11-02 21:09:49,659 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 134 states, 134 states have (on average 1.5223880597014925) internal successors, (204), 134 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)