./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/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_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/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_6a3eae94-03ea-4678-940c-98a664fa6de0/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 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:06:17,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:06:17,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:06:17,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:06:17,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:06:17,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:06:17,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:06:17,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:06:17,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:06:17,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:06:17,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:06:17,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:06:17,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:06:17,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:06:17,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:06:17,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:06:17,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:06:17,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:06:17,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:06:17,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:06:17,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:06:17,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:06:17,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:06:17,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:06:17,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:06:17,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:06:17,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:06:17,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:06:17,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:06:17,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:06:17,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:06:17,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:06:17,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:06:17,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:06:17,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:06:17,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:06:17,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:06:17,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:06:17,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:06:17,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:06:17,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:06:17,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:06:17,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:06:17,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:06:17,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:06:17,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:06:17,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:06:17,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:06:17,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:06:17,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:06:17,751 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:06:17,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:06:17,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:06:17,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:06:17,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:06:17,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:06:17,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:06:17,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:06:17,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:06:17,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:06:17,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:06:17,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:06:17,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:06:17,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:06:17,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:06:17,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:06:17,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:06:17,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:06:17,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:06:17,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:06:17,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:06:17,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:06:17,758 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_6a3eae94-03ea-4678-940c-98a664fa6de0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 [2022-11-02 20:06:18,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:06:18,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:06:18,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:06:18,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:06:18,118 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:06:18,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-02 20:06:18,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/043795d58/ffd460acd1894a3b970003271e4aaf4e/FLAG7ff578eb3 [2022-11-02 20:06:18,916 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:06:18,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-02 20:06:18,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/043795d58/ffd460acd1894a3b970003271e4aaf4e/FLAG7ff578eb3 [2022-11-02 20:06:19,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/043795d58/ffd460acd1894a3b970003271e4aaf4e [2022-11-02 20:06:19,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:06:19,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:06:19,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:06:19,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:06:19,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:06:19,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:19" (1/1) ... [2022-11-02 20:06:19,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217c2ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:19, skipping insertion in model container [2022-11-02 20:06:19,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:19" (1/1) ... [2022-11-02 20:06:19,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:06:19,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:06:19,440 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_6a3eae94-03ea-4678-940c-98a664fa6de0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-02 20:06:19,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:06:19,882 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:06:19,895 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_6a3eae94-03ea-4678-940c-98a664fa6de0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-02 20:06:20,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:06:20,129 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:06:20,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20 WrapperNode [2022-11-02 20:06:20,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:06:20,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:06:20,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:06:20,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:06:20,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,477 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2229 [2022-11-02 20:06:20,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:06:20,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:06:20,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:06:20,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:06:20,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:06:20,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:06:20,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:06:20,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:06:20,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (1/1) ... [2022-11-02 20:06:20,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:06:20,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:20,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:06:20,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:06:20,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:06:20,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:06:21,458 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:06:21,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:06:26,169 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:06:26,179 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:06:26,179 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:06:26,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:26 BoogieIcfgContainer [2022-11-02 20:06:26,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:06:26,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:06:26,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:06:26,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:06:26,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:06:19" (1/3) ... [2022-11-02 20:06:26,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36122a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:06:26, skipping insertion in model container [2022-11-02 20:06:26,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:20" (2/3) ... [2022-11-02 20:06:26,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36122a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:06:26, skipping insertion in model container [2022-11-02 20:06:26,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:26" (3/3) ... [2022-11-02 20:06:26,192 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-02 20:06:26,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:06:26,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:06:26,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:06:26,307 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;@765ba8c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:06:26,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:06:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 223 states have (on average 1.4977578475336324) internal successors, (334), 224 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:26,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:26,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:26,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1799458747, now seen corresponding path program 1 times [2022-11-02 20:06:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:26,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805398808] [2022-11-02 20:06:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:27,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:27,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805398808] [2022-11-02 20:06:27,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805398808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:27,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:27,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:27,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940557815] [2022-11-02 20:06:27,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:27,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:27,088 INFO L87 Difference]: Start difference. First operand has 225 states, 223 states have (on average 1.4977578475336324) internal successors, (334), 224 states have internal predecessors, (334), 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 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:27,269 INFO L93 Difference]: Finished difference Result 445 states and 666 transitions. [2022-11-02 20:06:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:27,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:27,295 INFO L225 Difference]: With dead ends: 445 [2022-11-02 20:06:27,300 INFO L226 Difference]: Without dead ends: 222 [2022-11-02 20:06:27,303 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 20:06:27,307 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 649 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:27,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 313 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-02 20:06:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2022-11-02 20:06:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4863636363636363) internal successors, (327), 220 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2022-11-02 20:06:27,372 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 19 [2022-11-02 20:06:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:27,373 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2022-11-02 20:06:27,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2022-11-02 20:06:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:27,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:27,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:06:27,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1474440195, now seen corresponding path program 1 times [2022-11-02 20:06:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:27,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908291816] [2022-11-02 20:06:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:27,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908291816] [2022-11-02 20:06:27,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908291816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:27,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:27,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:27,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844037515] [2022-11-02 20:06:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:27,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:27,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:27,659 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:27,796 INFO L93 Difference]: Finished difference Result 443 states and 655 transitions. [2022-11-02 20:06:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:27,800 INFO L225 Difference]: With dead ends: 443 [2022-11-02 20:06:27,802 INFO L226 Difference]: Without dead ends: 224 [2022-11-02 20:06:27,804 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 20:06:27,808 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 645 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:27,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 314 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-02 20:06:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-11-02 20:06:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.481818181818182) internal successors, (326), 220 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 326 transitions. [2022-11-02 20:06:27,835 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 326 transitions. Word has length 19 [2022-11-02 20:06:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:27,835 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 326 transitions. [2022-11-02 20:06:27,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 326 transitions. [2022-11-02 20:06:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:27,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:27,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:27,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:06:27,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:27,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash 463322945, now seen corresponding path program 1 times [2022-11-02 20:06:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:27,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394189366] [2022-11-02 20:06:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:28,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394189366] [2022-11-02 20:06:28,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394189366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:28,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:28,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170657308] [2022-11-02 20:06:28,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:28,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:28,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:28,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:28,055 INFO L87 Difference]: Start difference. First operand 221 states and 326 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:28,157 INFO L93 Difference]: Finished difference Result 445 states and 655 transitions. [2022-11-02 20:06:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:28,159 INFO L225 Difference]: With dead ends: 445 [2022-11-02 20:06:28,160 INFO L226 Difference]: Without dead ends: 226 [2022-11-02 20:06:28,160 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 20:06:28,161 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 641 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:28,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 315 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-02 20:06:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2022-11-02 20:06:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4772727272727273) internal successors, (325), 220 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2022-11-02 20:06:28,183 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 19 [2022-11-02 20:06:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:28,184 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2022-11-02 20:06:28,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2022-11-02 20:06:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:28,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:28,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:06:28,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:28,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash 721488383, now seen corresponding path program 1 times [2022-11-02 20:06:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:28,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161996387] [2022-11-02 20:06:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:28,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161996387] [2022-11-02 20:06:28,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161996387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:28,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:28,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:28,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626476475] [2022-11-02 20:06:28,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:28,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:28,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:28,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:28,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:28,404 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:28,509 INFO L93 Difference]: Finished difference Result 447 states and 655 transitions. [2022-11-02 20:06:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:28,510 INFO L225 Difference]: With dead ends: 447 [2022-11-02 20:06:28,511 INFO L226 Difference]: Without dead ends: 228 [2022-11-02 20:06:28,511 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 20:06:28,512 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 637 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:28,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 316 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-02 20:06:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 221. [2022-11-02 20:06:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4727272727272727) internal successors, (324), 220 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2022-11-02 20:06:28,535 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 324 transitions. Word has length 19 [2022-11-02 20:06:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:28,536 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 324 transitions. [2022-11-02 20:06:28,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 324 transitions. [2022-11-02 20:06:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:28,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:28,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:06:28,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash 328461373, now seen corresponding path program 1 times [2022-11-02 20:06:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497842171] [2022-11-02 20:06:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:28,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497842171] [2022-11-02 20:06:28,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497842171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:28,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:28,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434287765] [2022-11-02 20:06:28,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:28,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:28,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:28,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:28,740 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:28,854 INFO L93 Difference]: Finished difference Result 449 states and 655 transitions. [2022-11-02 20:06:28,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:28,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:28,856 INFO L225 Difference]: With dead ends: 449 [2022-11-02 20:06:28,856 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:06:28,857 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 20:06:28,858 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 633 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:28,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 317 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:06:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 221. [2022-11-02 20:06:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4681818181818183) internal successors, (323), 220 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 323 transitions. [2022-11-02 20:06:28,864 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 323 transitions. Word has length 19 [2022-11-02 20:06:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:28,866 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 323 transitions. [2022-11-02 20:06:28,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 323 transitions. [2022-11-02 20:06:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:28,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:28,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:28,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:06:28,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -480885253, now seen corresponding path program 1 times [2022-11-02 20:06:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084151549] [2022-11-02 20:06:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:28,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:29,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084151549] [2022-11-02 20:06:29,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084151549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:29,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:29,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318881347] [2022-11-02 20:06:29,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:29,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:29,098 INFO L87 Difference]: Start difference. First operand 221 states and 323 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:29,181 INFO L93 Difference]: Finished difference Result 451 states and 655 transitions. [2022-11-02 20:06:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:29,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:29,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:29,183 INFO L225 Difference]: With dead ends: 451 [2022-11-02 20:06:29,184 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 20:06:29,184 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 20:06:29,188 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 629 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:29,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 318 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 20:06:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2022-11-02 20:06:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4636363636363636) internal successors, (322), 220 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 322 transitions. [2022-11-02 20:06:29,200 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 322 transitions. Word has length 19 [2022-11-02 20:06:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:29,200 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 322 transitions. [2022-11-02 20:06:29,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 322 transitions. [2022-11-02 20:06:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:29,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:29,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:29,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:06:29,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -423626951, now seen corresponding path program 1 times [2022-11-02 20:06:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775132040] [2022-11-02 20:06:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:06:29,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775132040] [2022-11-02 20:06:29,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775132040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:29,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:29,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825469879] [2022-11-02 20:06:29,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:29,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:06:29,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:29,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:29,405 INFO L87 Difference]: Start difference. First operand 221 states and 322 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:29,534 INFO L93 Difference]: Finished difference Result 453 states and 655 transitions. [2022-11-02 20:06:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:29,535 INFO L225 Difference]: With dead ends: 453 [2022-11-02 20:06:29,535 INFO L226 Difference]: Without dead ends: 234 [2022-11-02 20:06:29,536 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 20:06:29,537 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 625 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:29,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 319 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-02 20:06:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-11-02 20:06:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.459090909090909) internal successors, (321), 220 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 321 transitions. [2022-11-02 20:06:29,548 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 321 transitions. Word has length 19 [2022-11-02 20:06:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:29,549 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 321 transitions. [2022-11-02 20:06:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 321 transitions. [2022-11-02 20:06:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:29,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:29,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:29,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:06:29,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:29,551 INFO L85 PathProgramCache]: Analyzing trace with hash -423567369, now seen corresponding path program 1 times [2022-11-02 20:06:29,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:06:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580101704] [2022-11-02 20:06:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:06:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:06:29,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:06:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:06:29,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:06:29,947 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:06:29,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:06:29,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:06:29,954 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:29,958 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:06:30,024 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:06:30,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:06:30 BoogieIcfgContainer [2022-11-02 20:06:30,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:06:30,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:06:30,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:06:30,047 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:06:30,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:26" (3/4) ... [2022-11-02 20:06:30,059 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:06:30,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:06:30,060 INFO L158 Benchmark]: Toolchain (without parser) took 10936.56ms. Allocated memory was 127.9MB in the beginning and 446.7MB in the end (delta: 318.8MB). Free memory was 88.8MB in the beginning and 241.3MB in the end (delta: -152.6MB). Peak memory consumption was 166.2MB. Max. memory is 16.1GB. [2022-11-02 20:06:30,060 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory was 108.2MB in the beginning and 108.1MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:06:30,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1006.99ms. Allocated memory is still 127.9MB. Free memory was 88.5MB in the beginning and 91.3MB in the end (delta: -2.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-11-02 20:06:30,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 331.76ms. Allocated memory is still 127.9MB. Free memory was 91.3MB in the beginning and 64.3MB in the end (delta: 27.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-11-02 20:06:30,061 INFO L158 Benchmark]: Boogie Preprocessor took 309.07ms. Allocated memory was 127.9MB in the beginning and 216.0MB in the end (delta: 88.1MB). Free memory was 64.3MB in the beginning and 148.4MB in the end (delta: -84.2MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-11-02 20:06:30,062 INFO L158 Benchmark]: RCFGBuilder took 5392.63ms. Allocated memory was 216.0MB in the beginning and 446.7MB in the end (delta: 230.7MB). Free memory was 148.4MB in the beginning and 215.5MB in the end (delta: -67.1MB). Peak memory consumption was 205.9MB. Max. memory is 16.1GB. [2022-11-02 20:06:30,062 INFO L158 Benchmark]: TraceAbstraction took 3862.79ms. Allocated memory is still 446.7MB. Free memory was 214.5MB in the beginning and 242.4MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:06:30,062 INFO L158 Benchmark]: Witness Printer took 12.57ms. Allocated memory is still 446.7MB. Free memory was 242.4MB in the beginning and 241.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:06:30,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory was 108.2MB in the beginning and 108.1MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1006.99ms. Allocated memory is still 127.9MB. Free memory was 88.5MB in the beginning and 91.3MB in the end (delta: -2.8MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 331.76ms. Allocated memory is still 127.9MB. Free memory was 91.3MB in the beginning and 64.3MB in the end (delta: 27.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 309.07ms. Allocated memory was 127.9MB in the beginning and 216.0MB in the end (delta: 88.1MB). Free memory was 64.3MB in the beginning and 148.4MB in the end (delta: -84.2MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * RCFGBuilder took 5392.63ms. Allocated memory was 216.0MB in the beginning and 446.7MB in the end (delta: 230.7MB). Free memory was 148.4MB in the beginning and 215.5MB in the end (delta: -67.1MB). Peak memory consumption was 205.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3862.79ms. Allocated memory is still 446.7MB. Free memory was 214.5MB in the beginning and 242.4MB in the end (delta: -27.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 12.57ms. Allocated memory is still 446.7MB. Free memory was 242.4MB in the beginning and 241.3MB in the end (delta: 1.0MB). There was no memory consumed. 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 bitwiseOr at line 208, overapproximation of bitwiseComplement at line 210, overapproximation of bitwiseAnd at line 202. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 12); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (12 - 1); [L28] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 1); [L29] const SORT_8 msb_SORT_8 = (SORT_8)1 << (1 - 1); [L31] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 4); [L32] const SORT_13 msb_SORT_13 = (SORT_13)1 << (4 - 1); [L34] const SORT_97 mask_SORT_97 = (SORT_97)-1 >> (sizeof(SORT_97) * 8 - 3); [L35] const SORT_97 msb_SORT_97 = (SORT_97)1 << (3 - 1); [L37] const SORT_305 mask_SORT_305 = (SORT_305)-1 >> (sizeof(SORT_305) * 8 - 2); [L38] const SORT_305 msb_SORT_305 = (SORT_305)1 << (2 - 1); [L40] const SORT_309 mask_SORT_309 = (SORT_309)-1 >> (sizeof(SORT_309) * 8 - 5); [L41] const SORT_309 msb_SORT_309 = (SORT_309)1 << (5 - 1); [L43] const SORT_311 mask_SORT_311 = (SORT_311)-1 >> (sizeof(SORT_311) * 8 - 6); [L44] const SORT_311 msb_SORT_311 = (SORT_311)1 << (6 - 1); [L46] const SORT_313 mask_SORT_313 = (SORT_313)-1 >> (sizeof(SORT_313) * 8 - 7); [L47] const SORT_313 msb_SORT_313 = (SORT_313)1 << (7 - 1); [L49] const SORT_315 mask_SORT_315 = (SORT_315)-1 >> (sizeof(SORT_315) * 8 - 8); [L50] const SORT_315 msb_SORT_315 = (SORT_315)1 << (8 - 1); [L52] const SORT_317 mask_SORT_317 = (SORT_317)-1 >> (sizeof(SORT_317) * 8 - 9); [L53] const SORT_317 msb_SORT_317 = (SORT_317)1 << (9 - 1); [L55] const SORT_319 mask_SORT_319 = (SORT_319)-1 >> (sizeof(SORT_319) * 8 - 10); [L56] const SORT_319 msb_SORT_319 = (SORT_319)1 << (10 - 1); [L58] const SORT_321 mask_SORT_321 = (SORT_321)-1 >> (sizeof(SORT_321) * 8 - 11); [L59] const SORT_321 msb_SORT_321 = (SORT_321)1 << (11 - 1); [L61] const SORT_8 var_18 = 0; [L62] const SORT_1 var_22 = 0; [L63] const SORT_1 var_25 = 2; [L64] const SORT_1 var_47 = 1; [L65] const SORT_8 var_52 = 1; [L66] const SORT_13 var_56 = 2; [L67] const SORT_13 var_61 = 9; [L68] const SORT_13 var_69 = 15; [L69] const SORT_13 var_74 = 1; [L70] const SORT_13 var_76 = 3; [L71] const SORT_13 var_79 = 5; [L72] const SORT_13 var_82 = 7; [L73] const SORT_13 var_85 = 11; [L74] const SORT_97 var_98 = 0; [L75] const SORT_13 var_111 = 8; [L76] const SORT_13 var_115 = 10; [L77] const SORT_13 var_119 = 13; [L78] const SORT_13 var_130 = 4; [L79] const SORT_13 var_132 = 12; [L80] const SORT_13 var_135 = 14; [L81] const SORT_13 var_141 = 6; [L82] const SORT_13 var_168 = 0; [L83] const SORT_97 var_216 = 1; [L84] const SORT_97 var_218 = 5; [L85] const SORT_1 var_245 = 4095; [L86] const SORT_321 var_592 = 0; [L88] SORT_1 input_2; [L89] SORT_1 input_3; [L90] SORT_1 input_4; [L91] SORT_1 input_5; [L92] SORT_1 input_6; [L93] SORT_1 input_7; [L94] SORT_8 input_9; [L95] SORT_8 input_10; [L96] SORT_8 input_11; [L97] SORT_1 input_12; [L98] SORT_13 input_14; [L99] SORT_8 input_15; [L100] SORT_8 input_16; [L101] SORT_8 input_17; [L102] SORT_1 input_210; [L103] SORT_97 input_212; [L104] SORT_1 input_232; [L105] SORT_97 input_235; [L107] SORT_8 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_8; [L108] SORT_1 state_23 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L109] SORT_1 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L110] SORT_1 state_30 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L111] SORT_1 state_33 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L112] SORT_1 state_35 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L113] SORT_1 state_39 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L114] SORT_1 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L115] SORT_1 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L116] SORT_97 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_97; [L117] SORT_1 state_128 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L119] SORT_8 init_20_arg_1 = var_18; [L120] state_19 = init_20_arg_1 [L121] SORT_1 init_24_arg_1 = var_22; [L122] state_23 = init_24_arg_1 [L123] SORT_1 init_29_arg_1 = var_22; [L124] state_28 = init_29_arg_1 [L125] SORT_1 init_31_arg_1 = var_22; [L126] state_30 = init_31_arg_1 [L127] SORT_1 init_34_arg_1 = var_22; [L128] state_33 = init_34_arg_1 [L129] SORT_1 init_36_arg_1 = var_22; [L130] state_35 = init_36_arg_1 [L131] SORT_1 init_40_arg_1 = var_22; [L132] state_39 = init_40_arg_1 [L133] SORT_1 init_42_arg_1 = var_22; [L134] state_41 = init_42_arg_1 [L135] SORT_1 init_59_arg_1 = var_22; [L136] state_58 = init_59_arg_1 [L137] SORT_97 init_100_arg_1 = var_98; [L138] state_99 = init_100_arg_1 [L139] SORT_1 init_129_arg_1 = var_22; [L140] state_128 = init_129_arg_1 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_216=1, var_218=5, var_22=0, var_245=4095, var_25=2, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L143] input_2 = __VERIFIER_nondet_ushort() [L144] input_3 = __VERIFIER_nondet_ushort() [L145] input_4 = __VERIFIER_nondet_ushort() [L146] input_5 = __VERIFIER_nondet_ushort() [L147] input_6 = __VERIFIER_nondet_ushort() [L148] input_7 = __VERIFIER_nondet_ushort() [L149] input_9 = __VERIFIER_nondet_uchar() [L150] input_10 = __VERIFIER_nondet_uchar() [L151] input_11 = __VERIFIER_nondet_uchar() [L152] input_11 = input_11 & mask_SORT_8 [L153] input_12 = __VERIFIER_nondet_ushort() [L154] input_14 = __VERIFIER_nondet_uchar() [L155] input_14 = input_14 & mask_SORT_13 [L156] input_15 = __VERIFIER_nondet_uchar() [L157] input_16 = __VERIFIER_nondet_uchar() [L158] input_17 = __VERIFIER_nondet_uchar() [L159] input_210 = __VERIFIER_nondet_ushort() [L160] input_212 = __VERIFIER_nondet_uchar() [L161] input_232 = __VERIFIER_nondet_ushort() [L162] input_235 = __VERIFIER_nondet_uchar() [L165] SORT_8 var_21_arg_0 = state_19; [L166] SORT_8 var_21_arg_1 = var_18; [L167] SORT_8 var_21 = var_21_arg_0 == var_21_arg_1; [L168] SORT_1 var_26_arg_0 = state_23; [L169] SORT_1 var_26_arg_1 = var_25; [L170] SORT_8 var_26 = var_26_arg_0 != var_26_arg_1; [L171] SORT_8 var_27_arg_0 = var_21; [L172] SORT_8 var_27_arg_1 = var_26; [L173] SORT_8 var_27 = var_27_arg_0 | var_27_arg_1; [L174] SORT_8 var_44_arg_0 = var_18; [L175] SORT_1 var_44_arg_1 = input_7; [L176] SORT_1 var_44_arg_2 = input_6; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L177] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_44_arg_0=0, var_44_arg_0 ? var_44_arg_1 : var_44_arg_2=0, var_44_arg_1=4110, var_44_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L177] SORT_1 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L178] SORT_8 var_43_arg_0 = var_18; [L179] SORT_1 var_43_arg_1 = state_41; [L180] SORT_1 var_43_arg_2 = state_39; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L181] EXPR var_43_arg_0 ? var_43_arg_1 : var_43_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_43_arg_0=0, var_43_arg_0 ? var_43_arg_1 : var_43_arg_2=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L181] SORT_1 var_43 = var_43_arg_0 ? var_43_arg_1 : var_43_arg_2; [L182] SORT_8 var_45_arg_0 = var_18; [L183] SORT_1 var_45_arg_1 = var_44; [L184] SORT_1 var_45_arg_2 = var_43; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L185] EXPR var_45_arg_0 ? var_45_arg_1 : var_45_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45_arg_0=0, var_45_arg_0 ? var_45_arg_1 : var_45_arg_2=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L185] SORT_1 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L186] SORT_8 var_37_arg_0 = var_18; [L187] SORT_1 var_37_arg_1 = state_35; [L188] SORT_1 var_37_arg_2 = state_33; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L189] EXPR var_37_arg_0 ? var_37_arg_1 : var_37_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_37_arg_0=0, var_37_arg_0 ? var_37_arg_1 : var_37_arg_2=0, var_37_arg_1=0, var_37_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L189] SORT_1 var_37 = var_37_arg_0 ? var_37_arg_1 : var_37_arg_2; [L190] SORT_8 var_32_arg_0 = var_18; [L191] SORT_1 var_32_arg_1 = state_30; [L192] SORT_1 var_32_arg_2 = state_28; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L193] EXPR var_32_arg_0 ? var_32_arg_1 : var_32_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_32_arg_0=0, var_32_arg_0 ? var_32_arg_1 : var_32_arg_2=0, var_32_arg_1=0, var_32_arg_2=0, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L193] SORT_1 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L194] SORT_8 var_38_arg_0 = var_18; [L195] SORT_1 var_38_arg_1 = var_37; [L196] SORT_1 var_38_arg_2 = var_32; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L197] EXPR var_38_arg_0 ? var_38_arg_1 : var_38_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_38_arg_0=0, var_38_arg_0 ? var_38_arg_1 : var_38_arg_2=0, var_38_arg_1=0, var_38_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L197] SORT_1 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L198] SORT_8 var_46_arg_0 = var_18; [L199] SORT_1 var_46_arg_1 = var_45; [L200] SORT_1 var_46_arg_2 = var_38; VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_46_arg_0=0, var_46_arg_1=0, var_46_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L201] EXPR var_46_arg_0 ? var_46_arg_1 : var_46_arg_2 VAL [init_100_arg_1=0, init_129_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_59_arg_1=0, input_10=0, input_11=1, input_12=4104, input_14=1, input_15=1, input_16=3, input_17=5, input_2=4107, input_210=4102, input_212=12, input_232=4106, input_235=7, input_3=4109, input_4=4100, input_5=4098, input_6=0, input_7=4110, input_9=9, mask_SORT_1=4095, mask_SORT_13=15, mask_SORT_305=3, mask_SORT_309=31, mask_SORT_311=63, mask_SORT_313=127, mask_SORT_315=255, mask_SORT_317=511, mask_SORT_319=1023, mask_SORT_321=2047, mask_SORT_8=1, mask_SORT_97=7, msb_SORT_1=2048, msb_SORT_13=8, msb_SORT_305=2, msb_SORT_309=16, msb_SORT_311=32, msb_SORT_313=64, msb_SORT_315=128, msb_SORT_317=256, msb_SORT_319=512, msb_SORT_321=1024, msb_SORT_8=1, msb_SORT_97=4, state_128=0, state_19=0, state_23=0, state_28=0, state_30=0, state_33=0, state_35=0, state_39=0, state_41=0, state_58=0, state_99=0, var_111=8, var_115=10, var_119=13, var_130=4, var_132=12, var_135=14, var_141=6, var_168=0, var_18=0, var_21=1, var_216=1, var_218=5, var_21_arg_0=0, var_21_arg_1=0, var_22=0, var_245=4095, var_25=2, var_26=1, var_26_arg_0=0, var_26_arg_1=2, var_27=1, var_27_arg_0=1, var_27_arg_1=1, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_37=0, var_37_arg_0=0, var_37_arg_1=0, var_37_arg_2=0, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_38_arg_2=0, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_43_arg_2=0, var_44=0, var_44_arg_0=0, var_44_arg_1=4110, var_44_arg_2=0, var_45=0, var_45_arg_0=0, var_45_arg_1=0, var_45_arg_2=0, var_46_arg_0=0, var_46_arg_0 ? var_46_arg_1 : var_46_arg_2=0, var_46_arg_1=0, var_46_arg_2=0, var_47=1, var_52=1, var_56=2, var_592=0, var_61=9, var_69=15, var_74=1, var_76=3, var_79=5, var_82=7, var_85=11, var_98=0] [L201] SORT_1 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L202] var_46 = var_46 & mask_SORT_1 [L203] SORT_1 var_48_arg_0 = var_46; [L204] SORT_1 var_48_arg_1 = var_47; [L205] SORT_8 var_48 = var_48_arg_0 == var_48_arg_1; [L206] SORT_8 var_49_arg_0 = var_27; [L207] SORT_8 var_49_arg_1 = var_48; [L208] SORT_8 var_49 = var_49_arg_0 | var_49_arg_1; [L209] SORT_8 var_53_arg_0 = var_49; [L210] SORT_8 var_53 = ~var_53_arg_0; [L211] SORT_8 var_54_arg_0 = var_52; [L212] SORT_8 var_54_arg_1 = var_53; [L213] SORT_8 var_54 = var_54_arg_0 & var_54_arg_1; [L214] var_54 = var_54 & mask_SORT_8 [L215] SORT_8 bad_55_arg_0 = var_54; [L216] CALL __VERIFIER_assert(!(bad_55_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, 225 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4459 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4459 mSDsluCounter, 2212 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 168 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2177 mSDtfsCounter, 168 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 49 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 20:06:30,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/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_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/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_6a3eae94-03ea-4678-940c-98a664fa6de0/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 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:06:32,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:06:32,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:06:32,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:06:32,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:06:32,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:06:32,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:06:32,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:06:32,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:06:32,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:06:32,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:06:32,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:06:32,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:06:32,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:06:32,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:06:32,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:06:32,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:06:32,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:06:32,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:06:32,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:06:32,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:06:32,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:06:32,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:06:32,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:06:32,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:06:32,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:06:32,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:06:32,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:06:32,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:06:32,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:06:32,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:06:32,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:06:32,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:06:32,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:06:32,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:06:32,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:06:32,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:06:32,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:06:32,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:06:32,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:06:32,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:06:32,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:06:32,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:06:32,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:06:32,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:06:32,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:06:32,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:06:32,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:06:32,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:06:32,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:06:32,784 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:06:32,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:06:32,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:06:32,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:06:32,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:06:32,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:06:32,787 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:06:32,787 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:06:32,787 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:06:32,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:06:32,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:06:32,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:06:32,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:06:32,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:06:32,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:06:32,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:06:32,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:06:32,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:06:32,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:06:32,790 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:06:32,790 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:06:32,790 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:06:32,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:06:32,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:06:32,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:06:32,791 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_6a3eae94-03ea-4678-940c-98a664fa6de0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ade89d9994325493c9462293c9b3d2b8ab96fa12e80a31b520a55487db53c4 [2022-11-02 20:06:33,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:06:33,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:06:33,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:06:33,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:06:33,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:06:33,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-02 20:06:33,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/190c75e3c/607521082ef6484f80fa5663270b6b0e/FLAGe734af046 [2022-11-02 20:06:34,052 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:06:34,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-02 20:06:34,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/190c75e3c/607521082ef6484f80fa5663270b6b0e/FLAGe734af046 [2022-11-02 20:06:34,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/data/190c75e3c/607521082ef6484f80fa5663270b6b0e [2022-11-02 20:06:34,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:06:34,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:06:34,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:06:34,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:06:34,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:06:34,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:34" (1/1) ... [2022-11-02 20:06:34,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cb41b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:34, skipping insertion in model container [2022-11-02 20:06:34,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:06:34" (1/1) ... [2022-11-02 20:06:34,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:06:34,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:06:34,512 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_6a3eae94-03ea-4678-940c-98a664fa6de0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-02 20:06:34,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:06:34,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:06:34,987 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_6a3eae94-03ea-4678-940c-98a664fa6de0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p3.c[1107,1120] [2022-11-02 20:06:35,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:06:35,193 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:06:35,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35 WrapperNode [2022-11-02 20:06:35,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:06:35,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:06:35,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:06:35,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:06:35,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,369 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2229 [2022-11-02 20:06:35,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:06:35,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:06:35,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:06:35,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:06:35,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:06:35,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:06:35,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:06:35,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:06:35,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (1/1) ... [2022-11-02 20:06:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:06:35,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:06:35,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:06:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:06:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:06:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:06:36,202 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:06:36,204 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:06:37,810 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:06:37,827 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:06:37,828 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:06:37,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:37 BoogieIcfgContainer [2022-11-02 20:06:37,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:06:37,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:06:37,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:06:37,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:06:37,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:06:34" (1/3) ... [2022-11-02 20:06:37,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2652e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:06:37, skipping insertion in model container [2022-11-02 20:06:37,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:06:35" (2/3) ... [2022-11-02 20:06:37,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2652e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:06:37, skipping insertion in model container [2022-11-02 20:06:37,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:06:37" (3/3) ... [2022-11-02 20:06:37,843 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_am2910_p3.c [2022-11-02 20:06:37,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:06:37,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:06:37,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:06:37,967 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;@190abf90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:06:37,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:06:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 223 states have (on average 1.4977578475336324) internal successors, (334), 224 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:37,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:37,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:37,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1799458747, now seen corresponding path program 1 times [2022-11-02 20:06:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104657360] [2022-11-02 20:06:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:38,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:38,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:38,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:38,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:06:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:38,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:38,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:38,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:38,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:38,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104657360] [2022-11-02 20:06:38,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104657360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:38,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:38,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:38,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909540181] [2022-11-02 20:06:38,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:38,598 INFO L87 Difference]: Start difference. First operand has 225 states, 223 states have (on average 1.4977578475336324) internal successors, (334), 224 states have internal predecessors, (334), 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 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:38,759 INFO L93 Difference]: Finished difference Result 445 states and 666 transitions. [2022-11-02 20:06:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:38,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:38,772 INFO L225 Difference]: With dead ends: 445 [2022-11-02 20:06:38,772 INFO L226 Difference]: Without dead ends: 222 [2022-11-02 20:06:38,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:38,779 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 649 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:38,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 313 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-02 20:06:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2022-11-02 20:06:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4863636363636363) internal successors, (327), 220 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2022-11-02 20:06:38,829 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 19 [2022-11-02 20:06:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:38,830 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2022-11-02 20:06:38,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2022-11-02 20:06:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:38,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:38,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:38,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:39,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:39,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1474440195, now seen corresponding path program 1 times [2022-11-02 20:06:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:39,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460926715] [2022-11-02 20:06:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:39,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:39,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:39,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:39,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:06:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:39,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:39,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:39,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:39,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:39,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460926715] [2022-11-02 20:06:39,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460926715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:39,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:39,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:39,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006457208] [2022-11-02 20:06:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:39,518 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:39,609 INFO L93 Difference]: Finished difference Result 443 states and 655 transitions. [2022-11-02 20:06:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:39,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:39,616 INFO L225 Difference]: With dead ends: 443 [2022-11-02 20:06:39,618 INFO L226 Difference]: Without dead ends: 224 [2022-11-02 20:06:39,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:39,625 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 645 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:39,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 314 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-02 20:06:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-11-02 20:06:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.481818181818182) internal successors, (326), 220 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 326 transitions. [2022-11-02 20:06:39,651 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 326 transitions. Word has length 19 [2022-11-02 20:06:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:39,652 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 326 transitions. [2022-11-02 20:06:39,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 326 transitions. [2022-11-02 20:06:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:39,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:39,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:39,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-02 20:06:39,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:39,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:39,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 463322945, now seen corresponding path program 1 times [2022-11-02 20:06:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:39,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135864586] [2022-11-02 20:06:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:39,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:39,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:39,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:39,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:06:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:40,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:40,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:40,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:40,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:40,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135864586] [2022-11-02 20:06:40,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135864586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:40,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:40,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819094537] [2022-11-02 20:06:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:40,315 INFO L87 Difference]: Start difference. First operand 221 states and 326 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:40,403 INFO L93 Difference]: Finished difference Result 445 states and 655 transitions. [2022-11-02 20:06:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:40,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:40,405 INFO L225 Difference]: With dead ends: 445 [2022-11-02 20:06:40,405 INFO L226 Difference]: Without dead ends: 226 [2022-11-02 20:06:40,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:40,410 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 641 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:40,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 315 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-02 20:06:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2022-11-02 20:06:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4772727272727273) internal successors, (325), 220 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2022-11-02 20:06:40,437 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 19 [2022-11-02 20:06:40,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:40,438 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2022-11-02 20:06:40,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2022-11-02 20:06:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:40,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:40,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:40,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:40,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash 721488383, now seen corresponding path program 1 times [2022-11-02 20:06:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:40,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812086767] [2022-11-02 20:06:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:40,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:40,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:06:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:41,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:41,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:41,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:41,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812086767] [2022-11-02 20:06:41,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812086767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:41,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:41,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345506132] [2022-11-02 20:06:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:41,088 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:41,156 INFO L93 Difference]: Finished difference Result 447 states and 655 transitions. [2022-11-02 20:06:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:41,158 INFO L225 Difference]: With dead ends: 447 [2022-11-02 20:06:41,158 INFO L226 Difference]: Without dead ends: 228 [2022-11-02 20:06:41,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:41,160 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 637 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:41,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 316 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-02 20:06:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 221. [2022-11-02 20:06:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4727272727272727) internal successors, (324), 220 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2022-11-02 20:06:41,168 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 324 transitions. Word has length 19 [2022-11-02 20:06:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:41,169 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 324 transitions. [2022-11-02 20:06:41,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 324 transitions. [2022-11-02 20:06:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:41,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:41,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:41,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:41,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 328461373, now seen corresponding path program 1 times [2022-11-02 20:06:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364771877] [2022-11-02 20:06:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:41,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:41,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:41,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:06:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:41,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:41,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:41,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:41,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364771877] [2022-11-02 20:06:41,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364771877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:41,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:41,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544487617] [2022-11-02 20:06:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:41,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:41,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:41,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:41,826 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:41,895 INFO L93 Difference]: Finished difference Result 449 states and 655 transitions. [2022-11-02 20:06:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:41,898 INFO L225 Difference]: With dead ends: 449 [2022-11-02 20:06:41,898 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:06:41,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:41,900 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 633 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:41,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 317 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:06:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:06:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 221. [2022-11-02 20:06:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4681818181818183) internal successors, (323), 220 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 323 transitions. [2022-11-02 20:06:41,907 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 323 transitions. Word has length 19 [2022-11-02 20:06:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:41,908 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 323 transitions. [2022-11-02 20:06:41,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 323 transitions. [2022-11-02 20:06:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:41,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:41,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:41,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:42,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:42,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash -480885253, now seen corresponding path program 1 times [2022-11-02 20:06:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:42,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244341424] [2022-11-02 20:06:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:42,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:42,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:42,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:42,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:06:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:42,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:42,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:42,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:42,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244341424] [2022-11-02 20:06:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244341424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:42,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:42,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933786246] [2022-11-02 20:06:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:42,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:42,567 INFO L87 Difference]: Start difference. First operand 221 states and 323 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:42,647 INFO L93 Difference]: Finished difference Result 451 states and 655 transitions. [2022-11-02 20:06:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:42,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:42,649 INFO L225 Difference]: With dead ends: 451 [2022-11-02 20:06:42,649 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 20:06:42,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:42,654 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 629 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:42,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 318 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 20:06:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2022-11-02 20:06:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4636363636363636) internal successors, (322), 220 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 322 transitions. [2022-11-02 20:06:42,665 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 322 transitions. Word has length 19 [2022-11-02 20:06:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:42,666 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 322 transitions. [2022-11-02 20:06:42,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 322 transitions. [2022-11-02 20:06:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:42,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:42,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:42,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:42,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -423626951, now seen corresponding path program 1 times [2022-11-02 20:06:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:42,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342956598] [2022-11-02 20:06:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:42,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:06:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:43,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:43,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:43,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:43,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342956598] [2022-11-02 20:06:43,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342956598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:43,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:43,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514678708] [2022-11-02 20:06:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:43,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:43,323 INFO L87 Difference]: Start difference. First operand 221 states and 322 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:43,397 INFO L93 Difference]: Finished difference Result 453 states and 655 transitions. [2022-11-02 20:06:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 19 [2022-11-02 20:06:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:43,400 INFO L225 Difference]: With dead ends: 453 [2022-11-02 20:06:43,400 INFO L226 Difference]: Without dead ends: 234 [2022-11-02 20:06:43,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 20:06:43,401 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 625 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:43,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 319 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-02 20:06:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-11-02 20:06:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.459090909090909) internal successors, (321), 220 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 321 transitions. [2022-11-02 20:06:43,409 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 321 transitions. Word has length 19 [2022-11-02 20:06:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:43,409 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 321 transitions. [2022-11-02 20:06:43,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 321 transitions. [2022-11-02 20:06:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:06:43,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:43,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:43,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:43,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash -423567369, now seen corresponding path program 1 times [2022-11-02 20:06:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:43,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964871074] [2022-11-02 20:06:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:43,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:43,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:43,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:43,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:06:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:44,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:06:44,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:44,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:44,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:44,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964871074] [2022-11-02 20:06:44,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964871074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:44,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:44,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:06:44,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75290463] [2022-11-02 20:06:44,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:44,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:06:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:06:44,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:06:44,287 INFO L87 Difference]: Start difference. First operand 221 states and 321 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 20:06:44,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:44,678 INFO L93 Difference]: Finished difference Result 455 states and 655 transitions. [2022-11-02 20:06:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:06:44,679 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 19 [2022-11-02 20:06:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:44,681 INFO L225 Difference]: With dead ends: 455 [2022-11-02 20:06:44,681 INFO L226 Difference]: Without dead ends: 453 [2022-11-02 20:06:44,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:06:44,682 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 330 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:44,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1130 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 160 Unchecked, 0.3s Time] [2022-11-02 20:06:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-02 20:06:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 237. [2022-11-02 20:06:44,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4279661016949152) internal successors, (337), 236 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 337 transitions. [2022-11-02 20:06:44,693 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 337 transitions. Word has length 19 [2022-11-02 20:06:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:44,693 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 337 transitions. [2022-11-02 20:06:44,693 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 20:06:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 337 transitions. [2022-11-02 20:06:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:44,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:44,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:44,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:44,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:44,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash 884875117, now seen corresponding path program 1 times [2022-11-02 20:06:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:44,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201956994] [2022-11-02 20:06:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:44,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:44,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:44,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:44,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:06:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:46,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:46,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:46,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:46,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:46,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201956994] [2022-11-02 20:06:46,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201956994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:46,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:46,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403140956] [2022-11-02 20:06:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:46,138 INFO L87 Difference]: Start difference. First operand 237 states and 337 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:46,221 INFO L93 Difference]: Finished difference Result 457 states and 657 transitions. [2022-11-02 20:06:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:46,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:46,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:46,223 INFO L225 Difference]: With dead ends: 457 [2022-11-02 20:06:46,223 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:06:46,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:06:46,224 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 619 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:46,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 324 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:06:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2022-11-02 20:06:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.423728813559322) internal successors, (336), 236 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 336 transitions. [2022-11-02 20:06:46,233 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 336 transitions. Word has length 236 [2022-11-02 20:06:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:46,233 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 336 transitions. [2022-11-02 20:06:46,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 336 transitions. [2022-11-02 20:06:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:46,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:46,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:46,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:46,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:46,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash -877950609, now seen corresponding path program 1 times [2022-11-02 20:06:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:46,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855443029] [2022-11-02 20:06:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:46,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:46,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:46,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:06:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:47,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:47,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:47,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:47,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:47,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855443029] [2022-11-02 20:06:47,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855443029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:47,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:47,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870491807] [2022-11-02 20:06:47,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:47,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:47,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:47,553 INFO L87 Difference]: Start difference. First operand 237 states and 336 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:47,635 INFO L93 Difference]: Finished difference Result 461 states and 660 transitions. [2022-11-02 20:06:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:47,638 INFO L225 Difference]: With dead ends: 461 [2022-11-02 20:06:47,638 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 20:06:47,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:06:47,639 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 613 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:47,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 329 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 20:06:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 237. [2022-11-02 20:06:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4194915254237288) internal successors, (335), 236 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 335 transitions. [2022-11-02 20:06:47,648 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 335 transitions. Word has length 236 [2022-11-02 20:06:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:47,648 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 335 transitions. [2022-11-02 20:06:47,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 335 transitions. [2022-11-02 20:06:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:47,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:47,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:47,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:47,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -632142735, now seen corresponding path program 1 times [2022-11-02 20:06:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:47,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854908476] [2022-11-02 20:06:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:47,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:47,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:47,863 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:47,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:06:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:48,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:48,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:48,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:48,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:48,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854908476] [2022-11-02 20:06:48,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854908476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:48,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939589837] [2022-11-02 20:06:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:48,853 INFO L87 Difference]: Start difference. First operand 237 states and 335 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:48,931 INFO L93 Difference]: Finished difference Result 463 states and 660 transitions. [2022-11-02 20:06:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:48,934 INFO L225 Difference]: With dead ends: 463 [2022-11-02 20:06:48,934 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 20:06:48,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:06:48,935 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 609 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:48,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 330 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 20:06:48,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2022-11-02 20:06:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4152542372881356) internal successors, (334), 236 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 334 transitions. [2022-11-02 20:06:48,945 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 334 transitions. Word has length 236 [2022-11-02 20:06:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:48,945 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 334 transitions. [2022-11-02 20:06:48,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 334 transitions. [2022-11-02 20:06:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:48,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:48,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:48,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:49,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:49,161 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash -502278157, now seen corresponding path program 1 times [2022-11-02 20:06:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:49,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947517875] [2022-11-02 20:06:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:49,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:49,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:49,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:06:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:50,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:50,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:50,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:50,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947517875] [2022-11-02 20:06:50,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947517875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:50,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:50,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294534671] [2022-11-02 20:06:50,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:50,267 INFO L87 Difference]: Start difference. First operand 237 states and 334 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:50,362 INFO L93 Difference]: Finished difference Result 465 states and 660 transitions. [2022-11-02 20:06:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:50,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:50,366 INFO L225 Difference]: With dead ends: 465 [2022-11-02 20:06:50,366 INFO L226 Difference]: Without dead ends: 246 [2022-11-02 20:06:50,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:06:50,368 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 605 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:50,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 331 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-02 20:06:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 237. [2022-11-02 20:06:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4110169491525424) internal successors, (333), 236 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 333 transitions. [2022-11-02 20:06:50,379 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 333 transitions. Word has length 236 [2022-11-02 20:06:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:50,379 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 333 transitions. [2022-11-02 20:06:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 333 transitions. [2022-11-02 20:06:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:50,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:50,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:50,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:50,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:50,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1816108043, now seen corresponding path program 1 times [2022-11-02 20:06:50,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:50,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326524612] [2022-11-02 20:06:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:50,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:50,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:50,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:06:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:51,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:51,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:51,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:51,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:51,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326524612] [2022-11-02 20:06:51,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326524612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:51,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:51,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186933060] [2022-11-02 20:06:51,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:51,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:51,611 INFO L87 Difference]: Start difference. First operand 237 states and 333 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:51,693 INFO L93 Difference]: Finished difference Result 467 states and 660 transitions. [2022-11-02 20:06:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:51,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:51,695 INFO L225 Difference]: With dead ends: 467 [2022-11-02 20:06:51,695 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 20:06:51,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:06:51,697 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 601 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:51,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 332 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 20:06:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2022-11-02 20:06:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4067796610169492) internal successors, (332), 236 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 332 transitions. [2022-11-02 20:06:51,705 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 332 transitions. Word has length 236 [2022-11-02 20:06:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:51,705 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 332 transitions. [2022-11-02 20:06:51,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 332 transitions. [2022-11-02 20:06:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:51,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:51,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:51,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:51,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:51,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1757939831, now seen corresponding path program 1 times [2022-11-02 20:06:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:51,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003597042] [2022-11-02 20:06:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:51,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:51,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:51,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:51,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:06:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:52,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:06:52,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:52,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:52,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:52,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003597042] [2022-11-02 20:06:52,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003597042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:52,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:52,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:06:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56555656] [2022-11-02 20:06:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:52,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:06:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:06:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:06:52,940 INFO L87 Difference]: Start difference. First operand 237 states and 332 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:53,026 INFO L93 Difference]: Finished difference Result 469 states and 660 transitions. [2022-11-02 20:06:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:06:53,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:53,029 INFO L225 Difference]: With dead ends: 469 [2022-11-02 20:06:53,030 INFO L226 Difference]: Without dead ends: 250 [2022-11-02 20:06:53,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 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 20:06:53,031 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 597 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:53,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 333 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:06:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-02 20:06:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 237. [2022-11-02 20:06:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.402542372881356) internal successors, (331), 236 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 331 transitions. [2022-11-02 20:06:53,040 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 331 transitions. Word has length 236 [2022-11-02 20:06:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:53,041 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 331 transitions. [2022-11-02 20:06:53,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:53,041 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 331 transitions. [2022-11-02 20:06:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:53,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:53,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:53,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:53,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:53,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 621995385, now seen corresponding path program 1 times [2022-11-02 20:06:53,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:53,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684860198] [2022-11-02 20:06:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:53,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:53,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:53,272 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:53,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:06:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:06:54,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:54,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:54,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:54,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684860198] [2022-11-02 20:06:54,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684860198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:54,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:54,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:06:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157516925] [2022-11-02 20:06:54,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:06:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:06:54,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:06:54,426 INFO L87 Difference]: Start difference. First operand 237 states and 331 transitions. Second operand has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:54,723 INFO L93 Difference]: Finished difference Result 478 states and 671 transitions. [2022-11-02 20:06:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:06:54,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:54,725 INFO L225 Difference]: With dead ends: 478 [2022-11-02 20:06:54,725 INFO L226 Difference]: Without dead ends: 259 [2022-11-02 20:06:54,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:06:54,726 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 7 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:54,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1762 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-02 20:06:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-02 20:06:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-11-02 20:06:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.3837209302325582) internal successors, (357), 258 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 357 transitions. [2022-11-02 20:06:54,735 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 357 transitions. Word has length 236 [2022-11-02 20:06:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:54,736 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 357 transitions. [2022-11-02 20:06:54,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 357 transitions. [2022-11-02 20:06:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:54,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:54,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:54,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:54,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1948129673, now seen corresponding path program 1 times [2022-11-02 20:06:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:54,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608114129] [2022-11-02 20:06:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:54,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:54,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:54,956 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:54,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:06:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:06:55,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:06:55,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:06:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:06:56,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:06:56,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:06:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608114129] [2022-11-02 20:06:56,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608114129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:06:56,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:06:56,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:06:56,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040714446] [2022-11-02 20:06:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:06:56,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:06:56,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:06:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:06:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:06:56,442 INFO L87 Difference]: Start difference. First operand 259 states and 357 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:06:59,061 INFO L93 Difference]: Finished difference Result 1776 states and 2520 transitions. [2022-11-02 20:06:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:06:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:06:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:06:59,066 INFO L225 Difference]: With dead ends: 1776 [2022-11-02 20:06:59,067 INFO L226 Difference]: Without dead ends: 1557 [2022-11-02 20:06:59,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:06:59,068 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 4198 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4198 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:06:59,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4198 Valid, 3165 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:06:59,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-11-02 20:06:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 267. [2022-11-02 20:06:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.3796992481203008) internal successors, (367), 266 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 367 transitions. [2022-11-02 20:06:59,083 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 367 transitions. Word has length 236 [2022-11-02 20:06:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:06:59,083 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 367 transitions. [2022-11-02 20:06:59,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:06:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 367 transitions. [2022-11-02 20:06:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:06:59,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:06:59,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:06:59,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:06:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:06:59,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:06:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:06:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash 65715705, now seen corresponding path program 1 times [2022-11-02 20:06:59,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:06:59,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188119164] [2022-11-02 20:06:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:06:59,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:06:59,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:06:59,316 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:06:59,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:07:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:00,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:00,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:00,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:00,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:00,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188119164] [2022-11-02 20:07:00,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188119164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:00,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:00,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059072478] [2022-11-02 20:07:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:00,692 INFO L87 Difference]: Start difference. First operand 267 states and 367 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:02,990 INFO L93 Difference]: Finished difference Result 1770 states and 2510 transitions. [2022-11-02 20:07:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:02,996 INFO L225 Difference]: With dead ends: 1770 [2022-11-02 20:07:02,996 INFO L226 Difference]: Without dead ends: 1551 [2022-11-02 20:07:02,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:02,998 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 3871 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3871 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:02,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3871 Valid, 2716 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:07:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-11-02 20:07:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 269. [2022-11-02 20:07:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.376865671641791) internal successors, (369), 268 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 369 transitions. [2022-11-02 20:07:03,016 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 369 transitions. Word has length 236 [2022-11-02 20:07:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:03,017 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 369 transitions. [2022-11-02 20:07:03,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 369 transitions. [2022-11-02 20:07:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:03,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:03,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:03,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:03,246 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2014867973, now seen corresponding path program 1 times [2022-11-02 20:07:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166494213] [2022-11-02 20:07:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:03,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:03,249 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:03,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:07:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:04,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:04,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:04,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:04,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:04,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166494213] [2022-11-02 20:07:04,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166494213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:04,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:04,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887685089] [2022-11-02 20:07:04,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:04,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:04,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:04,583 INFO L87 Difference]: Start difference. First operand 269 states and 369 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:06,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:06,719 INFO L93 Difference]: Finished difference Result 1766 states and 2503 transitions. [2022-11-02 20:07:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:06,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:06,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:06,724 INFO L225 Difference]: With dead ends: 1766 [2022-11-02 20:07:06,724 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 20:07:06,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:06,726 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 3856 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:06,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3856 Valid, 2719 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:07:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 20:07:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 271. [2022-11-02 20:07:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.374074074074074) internal successors, (371), 270 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 371 transitions. [2022-11-02 20:07:06,758 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 371 transitions. Word has length 236 [2022-11-02 20:07:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:06,758 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 371 transitions. [2022-11-02 20:07:06,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 371 transitions. [2022-11-02 20:07:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:06,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:06,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:06,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:06,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:06,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash 494696061, now seen corresponding path program 1 times [2022-11-02 20:07:06,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:06,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508335082] [2022-11-02 20:07:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:06,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:06,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:06,965 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:06,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:07:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:07,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:07,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:08,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:08,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:08,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508335082] [2022-11-02 20:07:08,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508335082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:08,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:08,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:08,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091222552] [2022-11-02 20:07:08,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:08,278 INFO L87 Difference]: Start difference. First operand 271 states and 371 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:10,431 INFO L93 Difference]: Finished difference Result 1762 states and 2496 transitions. [2022-11-02 20:07:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:10,436 INFO L225 Difference]: With dead ends: 1762 [2022-11-02 20:07:10,437 INFO L226 Difference]: Without dead ends: 1543 [2022-11-02 20:07:10,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:10,441 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 3841 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3841 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:10,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3841 Valid, 2722 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:07:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-11-02 20:07:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 273. [2022-11-02 20:07:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3713235294117647) internal successors, (373), 272 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 373 transitions. [2022-11-02 20:07:10,457 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 373 transitions. Word has length 236 [2022-11-02 20:07:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:10,457 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 373 transitions. [2022-11-02 20:07:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 373 transitions. [2022-11-02 20:07:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:10,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:10,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:10,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:10,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 617977727, now seen corresponding path program 1 times [2022-11-02 20:07:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:10,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264139744] [2022-11-02 20:07:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:10,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:10,684 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:10,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:07:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:11,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:11,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:11,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:11,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264139744] [2022-11-02 20:07:11,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264139744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:11,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:11,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:11,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754697297] [2022-11-02 20:07:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:11,996 INFO L87 Difference]: Start difference. First operand 273 states and 373 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:14,002 INFO L93 Difference]: Finished difference Result 1758 states and 2489 transitions. [2022-11-02 20:07:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:14,010 INFO L225 Difference]: With dead ends: 1758 [2022-11-02 20:07:14,011 INFO L226 Difference]: Without dead ends: 1539 [2022-11-02 20:07:14,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:14,013 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 3826 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:14,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 2725 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:07:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-02 20:07:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 275. [2022-11-02 20:07:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3686131386861313) internal successors, (375), 274 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 375 transitions. [2022-11-02 20:07:14,030 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 375 transitions. Word has length 236 [2022-11-02 20:07:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:14,030 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 375 transitions. [2022-11-02 20:07:14,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 375 transitions. [2022-11-02 20:07:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:14,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:14,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:14,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:14,257 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1520898305, now seen corresponding path program 1 times [2022-11-02 20:07:14,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:14,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805838278] [2022-11-02 20:07:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:14,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:14,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:14,260 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:14,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:07:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:15,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:15,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:15,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:15,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:15,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805838278] [2022-11-02 20:07:15,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805838278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:15,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:15,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:15,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991263721] [2022-11-02 20:07:15,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:15,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:15,557 INFO L87 Difference]: Start difference. First operand 275 states and 375 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:17,624 INFO L93 Difference]: Finished difference Result 1754 states and 2482 transitions. [2022-11-02 20:07:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:17,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:17,630 INFO L225 Difference]: With dead ends: 1754 [2022-11-02 20:07:17,630 INFO L226 Difference]: Without dead ends: 1535 [2022-11-02 20:07:17,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:17,632 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 3811 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3811 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:17,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3811 Valid, 2728 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:07:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-11-02 20:07:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 277. [2022-11-02 20:07:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3659420289855073) internal successors, (377), 276 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 377 transitions. [2022-11-02 20:07:17,645 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 377 transitions. Word has length 236 [2022-11-02 20:07:17,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:17,646 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 377 transitions. [2022-11-02 20:07:17,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 377 transitions. [2022-11-02 20:07:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:17,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:17,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:17,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:17,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:17,869 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:17,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1512899331, now seen corresponding path program 1 times [2022-11-02 20:07:17,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:17,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248214086] [2022-11-02 20:07:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:17,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:17,872 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:17,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:07:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:18,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:18,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:19,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:19,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248214086] [2022-11-02 20:07:19,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248214086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:19,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:19,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239791568] [2022-11-02 20:07:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:19,167 INFO L87 Difference]: Start difference. First operand 277 states and 377 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:21,106 INFO L93 Difference]: Finished difference Result 1746 states and 2469 transitions. [2022-11-02 20:07:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:21,118 INFO L225 Difference]: With dead ends: 1746 [2022-11-02 20:07:21,118 INFO L226 Difference]: Without dead ends: 1527 [2022-11-02 20:07:21,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:21,121 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 3785 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:21,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 2734 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:07:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2022-11-02 20:07:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 281. [2022-11-02 20:07:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.3642857142857143) internal successors, (382), 280 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 382 transitions. [2022-11-02 20:07:21,150 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 382 transitions. Word has length 236 [2022-11-02 20:07:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:21,150 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 382 transitions. [2022-11-02 20:07:21,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 382 transitions. [2022-11-02 20:07:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:21,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:21,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:21,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:21,369 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1024440827, now seen corresponding path program 1 times [2022-11-02 20:07:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:21,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399859448] [2022-11-02 20:07:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:21,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:21,372 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:21,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:07:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:22,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:22,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:22,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399859448] [2022-11-02 20:07:22,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399859448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:22,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:22,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:22,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652876650] [2022-11-02 20:07:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:22,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:22,660 INFO L87 Difference]: Start difference. First operand 281 states and 382 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:24,616 INFO L93 Difference]: Finished difference Result 1742 states and 2462 transitions. [2022-11-02 20:07:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:24,621 INFO L225 Difference]: With dead ends: 1742 [2022-11-02 20:07:24,621 INFO L226 Difference]: Without dead ends: 1523 [2022-11-02 20:07:24,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:24,623 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 3770 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3770 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:24,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3770 Valid, 2737 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:07:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-02 20:07:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 283. [2022-11-02 20:07:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3617021276595744) internal successors, (384), 282 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 384 transitions. [2022-11-02 20:07:24,637 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 384 transitions. Word has length 236 [2022-11-02 20:07:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:24,637 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 384 transitions. [2022-11-02 20:07:24,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 384 transitions. [2022-11-02 20:07:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:24,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:24,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:24,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:24,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:24,853 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1840488057, now seen corresponding path program 1 times [2022-11-02 20:07:24,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:24,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660126571] [2022-11-02 20:07:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:24,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:24,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:24,856 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:24,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:07:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:25,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:26,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:26,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:26,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660126571] [2022-11-02 20:07:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660126571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:26,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:26,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971650045] [2022-11-02 20:07:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:26,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:26,099 INFO L87 Difference]: Start difference. First operand 283 states and 384 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:28,061 INFO L93 Difference]: Finished difference Result 1738 states and 2455 transitions. [2022-11-02 20:07:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:28,066 INFO L225 Difference]: With dead ends: 1738 [2022-11-02 20:07:28,066 INFO L226 Difference]: Without dead ends: 1519 [2022-11-02 20:07:28,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:28,068 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 3755 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:28,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2740 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:07:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2022-11-02 20:07:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 285. [2022-11-02 20:07:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3591549295774648) internal successors, (386), 284 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 386 transitions. [2022-11-02 20:07:28,085 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 386 transitions. Word has length 236 [2022-11-02 20:07:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:28,085 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 386 transitions. [2022-11-02 20:07:28,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:28,085 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 386 transitions. [2022-11-02 20:07:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:28,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:28,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:28,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:28,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:28,311 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash -241338999, now seen corresponding path program 1 times [2022-11-02 20:07:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:28,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214058819] [2022-11-02 20:07:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:28,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:28,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:28,314 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:28,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:07:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:29,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:29,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:29,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:29,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:29,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214058819] [2022-11-02 20:07:29,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214058819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:29,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:29,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:29,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50834577] [2022-11-02 20:07:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:29,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:29,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:29,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:29,606 INFO L87 Difference]: Start difference. First operand 285 states and 386 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:31,592 INFO L93 Difference]: Finished difference Result 1734 states and 2448 transitions. [2022-11-02 20:07:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:31,598 INFO L225 Difference]: With dead ends: 1734 [2022-11-02 20:07:31,598 INFO L226 Difference]: Without dead ends: 1515 [2022-11-02 20:07:31,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:31,600 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 3740 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3740 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:31,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3740 Valid, 2743 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:07:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-11-02 20:07:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 287. [2022-11-02 20:07:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3566433566433567) internal successors, (388), 286 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 388 transitions. [2022-11-02 20:07:31,615 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 388 transitions. Word has length 236 [2022-11-02 20:07:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:31,615 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 388 transitions. [2022-11-02 20:07:31,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 388 transitions. [2022-11-02 20:07:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:31,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:31,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:31,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:31,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:31,841 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash -221797877, now seen corresponding path program 1 times [2022-11-02 20:07:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:31,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121338805] [2022-11-02 20:07:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:31,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:31,844 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:07:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:32,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:33,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:33,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:33,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121338805] [2022-11-02 20:07:33,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121338805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:33,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:33,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:33,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932962660] [2022-11-02 20:07:33,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:33,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:33,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:33,170 INFO L87 Difference]: Start difference. First operand 287 states and 388 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:35,053 INFO L93 Difference]: Finished difference Result 1730 states and 2441 transitions. [2022-11-02 20:07:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:35,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:35,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:35,058 INFO L225 Difference]: With dead ends: 1730 [2022-11-02 20:07:35,058 INFO L226 Difference]: Without dead ends: 1511 [2022-11-02 20:07:35,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:35,060 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 3725 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3725 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:35,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3725 Valid, 2746 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:07:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-11-02 20:07:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 289. [2022-11-02 20:07:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3541666666666667) internal successors, (390), 288 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 390 transitions. [2022-11-02 20:07:35,074 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 390 transitions. Word has length 236 [2022-11-02 20:07:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:35,075 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 390 transitions. [2022-11-02 20:07:35,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 390 transitions. [2022-11-02 20:07:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:35,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:35,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:35,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:35,293 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:35,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash 305596173, now seen corresponding path program 1 times [2022-11-02 20:07:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:35,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668278707] [2022-11-02 20:07:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:35,296 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:07:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:36,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:07:36,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:37,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:37,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:37,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668278707] [2022-11-02 20:07:37,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668278707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:37,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:37,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:07:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400192783] [2022-11-02 20:07:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:07:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:07:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:07:37,166 INFO L87 Difference]: Start difference. First operand 289 states and 390 transitions. Second operand has 13 states, 13 states have (on average 18.153846153846153) internal successors, (236), 13 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:39,781 INFO L93 Difference]: Finished difference Result 1386 states and 1944 transitions. [2022-11-02 20:07:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:07:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.153846153846153) internal successors, (236), 13 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:39,785 INFO L225 Difference]: With dead ends: 1386 [2022-11-02 20:07:39,785 INFO L226 Difference]: Without dead ends: 1167 [2022-11-02 20:07:39,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:07:39,787 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 4912 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:39,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4912 Valid, 3127 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:07:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-11-02 20:07:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 323. [2022-11-02 20:07:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.329192546583851) internal successors, (428), 322 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 428 transitions. [2022-11-02 20:07:39,802 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 428 transitions. Word has length 236 [2022-11-02 20:07:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:39,803 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 428 transitions. [2022-11-02 20:07:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.153846153846153) internal successors, (236), 13 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 428 transitions. [2022-11-02 20:07:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:39,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:39,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:39,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:40,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:40,025 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2066120693, now seen corresponding path program 1 times [2022-11-02 20:07:40,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:40,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220849951] [2022-11-02 20:07:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:40,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:40,028 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:40,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:07:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:40,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:07:40,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:42,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:42,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:42,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220849951] [2022-11-02 20:07:42,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220849951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:42,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:42,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:07:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056409835] [2022-11-02 20:07:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:42,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:07:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:07:42,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:07:42,071 INFO L87 Difference]: Start difference. First operand 323 states and 428 transitions. Second operand has 13 states, 13 states have (on average 18.153846153846153) internal successors, (236), 13 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:44,759 INFO L93 Difference]: Finished difference Result 1400 states and 1964 transitions. [2022-11-02 20:07:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:07:44,762 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.153846153846153) internal successors, (236), 13 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:44,766 INFO L225 Difference]: With dead ends: 1400 [2022-11-02 20:07:44,766 INFO L226 Difference]: Without dead ends: 1181 [2022-11-02 20:07:44,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:07:44,768 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 4897 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4897 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:44,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4897 Valid, 3239 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:07:44,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-02 20:07:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 337. [2022-11-02 20:07:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3333333333333333) internal successors, (448), 336 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 448 transitions. [2022-11-02 20:07:44,783 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 448 transitions. Word has length 236 [2022-11-02 20:07:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:44,784 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 448 transitions. [2022-11-02 20:07:44,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.153846153846153) internal successors, (236), 13 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:44,784 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 448 transitions. [2022-11-02 20:07:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:44,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:44,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:44,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:45,010 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 782265737, now seen corresponding path program 1 times [2022-11-02 20:07:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:45,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505393116] [2022-11-02 20:07:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:45,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:45,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:45,013 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:45,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:07:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:45,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:45,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:46,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:46,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:46,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505393116] [2022-11-02 20:07:46,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505393116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:46,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:46,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:07:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110212857] [2022-11-02 20:07:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:46,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:07:46,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:07:46,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:07:46,523 INFO L87 Difference]: Start difference. First operand 337 states and 448 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:48,725 INFO L93 Difference]: Finished difference Result 1726 states and 2420 transitions. [2022-11-02 20:07:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:07:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:48,730 INFO L225 Difference]: With dead ends: 1726 [2022-11-02 20:07:48,730 INFO L226 Difference]: Without dead ends: 1507 [2022-11-02 20:07:48,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:48,732 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 3578 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:48,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3578 Valid, 2785 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:07:48,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-11-02 20:07:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 363. [2022-11-02 20:07:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3425414364640884) internal successors, (486), 362 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 486 transitions. [2022-11-02 20:07:48,751 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 486 transitions. Word has length 236 [2022-11-02 20:07:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:48,752 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 486 transitions. [2022-11-02 20:07:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 486 transitions. [2022-11-02 20:07:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:48,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:48,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:48,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:48,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:48,970 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1581575925, now seen corresponding path program 1 times [2022-11-02 20:07:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:48,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543053543] [2022-11-02 20:07:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:48,979 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:48,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:07:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:49,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:50,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:50,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:50,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543053543] [2022-11-02 20:07:50,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543053543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:50,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:50,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:07:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258734458] [2022-11-02 20:07:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:07:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:07:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:07:50,530 INFO L87 Difference]: Start difference. First operand 363 states and 486 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:53,046 INFO L93 Difference]: Finished difference Result 1774 states and 2491 transitions. [2022-11-02 20:07:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:07:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:53,053 INFO L225 Difference]: With dead ends: 1774 [2022-11-02 20:07:53,053 INFO L226 Difference]: Without dead ends: 1555 [2022-11-02 20:07:53,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:07:53,056 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 3949 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3949 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:53,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3949 Valid, 3220 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:07:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2022-11-02 20:07:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 365. [2022-11-02 20:07:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3406593406593406) internal successors, (488), 364 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 488 transitions. [2022-11-02 20:07:53,084 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 488 transitions. Word has length 236 [2022-11-02 20:07:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:53,085 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 488 transitions. [2022-11-02 20:07:53,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 488 transitions. [2022-11-02 20:07:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:53,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:53,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:53,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:53,309 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:53,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 315403533, now seen corresponding path program 1 times [2022-11-02 20:07:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:53,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550444664] [2022-11-02 20:07:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:53,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:53,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:53,312 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:53,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:07:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:54,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:54,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:54,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:54,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:54,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550444664] [2022-11-02 20:07:54,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550444664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:54,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:54,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:07:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899623032] [2022-11-02 20:07:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:07:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:07:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:07:54,770 INFO L87 Difference]: Start difference. First operand 365 states and 488 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:57,255 INFO L93 Difference]: Finished difference Result 1770 states and 2484 transitions. [2022-11-02 20:07:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:07:57,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:07:57,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:57,262 INFO L225 Difference]: With dead ends: 1770 [2022-11-02 20:07:57,262 INFO L226 Difference]: Without dead ends: 1551 [2022-11-02 20:07:57,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:07:57,265 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 3933 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3933 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:57,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3933 Valid, 3223 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:07:57,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-11-02 20:07:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 367. [2022-11-02 20:07:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.3387978142076502) internal successors, (490), 366 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 490 transitions. [2022-11-02 20:07:57,286 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 490 transitions. Word has length 236 [2022-11-02 20:07:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:57,287 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 490 transitions. [2022-11-02 20:07:57,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 490 transitions. [2022-11-02 20:07:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:07:57,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:57,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:57,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:57,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:57,513 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:57,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash 741958031, now seen corresponding path program 1 times [2022-11-02 20:07:57,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:57,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781834872] [2022-11-02 20:07:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:57,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:57,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:57,518 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:57,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:07:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:58,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:07:58,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:58,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:58,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781834872] [2022-11-02 20:07:58,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781834872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:59,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:59,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:07:59,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653695988] [2022-11-02 20:07:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:59,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:07:59,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:59,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:07:59,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:07:59,002 INFO L87 Difference]: Start difference. First operand 367 states and 490 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:01,206 INFO L93 Difference]: Finished difference Result 1766 states and 2477 transitions. [2022-11-02 20:08:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:01,206 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:01,209 INFO L225 Difference]: With dead ends: 1766 [2022-11-02 20:08:01,210 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 20:08:01,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:01,211 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 3917 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:01,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 3226 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:08:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 20:08:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 369. [2022-11-02 20:08:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.3369565217391304) internal successors, (492), 368 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 492 transitions. [2022-11-02 20:08:01,228 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 492 transitions. Word has length 236 [2022-11-02 20:08:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:01,229 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 492 transitions. [2022-11-02 20:08:01,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 492 transitions. [2022-11-02 20:08:01,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:01,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:01,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:01,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:01,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:01,453 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash 585977489, now seen corresponding path program 1 times [2022-11-02 20:08:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:01,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537103797] [2022-11-02 20:08:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:01,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:01,456 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:01,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:08:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:02,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:02,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:02,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537103797] [2022-11-02 20:08:02,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537103797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:02,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:02,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:02,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37615424] [2022-11-02 20:08:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:02,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:02,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:02,786 INFO L87 Difference]: Start difference. First operand 369 states and 492 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:04,964 INFO L93 Difference]: Finished difference Result 1762 states and 2470 transitions. [2022-11-02 20:08:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:04,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:04,966 INFO L225 Difference]: With dead ends: 1762 [2022-11-02 20:08:04,967 INFO L226 Difference]: Without dead ends: 1543 [2022-11-02 20:08:04,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:04,968 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 3901 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3901 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:04,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3901 Valid, 3229 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:08:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2022-11-02 20:08:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 371. [2022-11-02 20:08:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.335135135135135) internal successors, (494), 370 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 494 transitions. [2022-11-02 20:08:04,980 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 494 transitions. Word has length 236 [2022-11-02 20:08:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:04,980 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 494 transitions. [2022-11-02 20:08:04,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 494 transitions. [2022-11-02 20:08:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:04,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:04,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:05,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:05,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:05,183 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1201892333, now seen corresponding path program 1 times [2022-11-02 20:08:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:05,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877944235] [2022-11-02 20:08:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:05,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:05,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:05,185 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:05,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:08:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:05,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:05,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:06,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:06,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:06,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877944235] [2022-11-02 20:08:06,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877944235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:06,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:06,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:06,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765330255] [2022-11-02 20:08:06,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:06,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:06,531 INFO L87 Difference]: Start difference. First operand 371 states and 494 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:08,636 INFO L93 Difference]: Finished difference Result 1758 states and 2463 transitions. [2022-11-02 20:08:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:08,640 INFO L225 Difference]: With dead ends: 1758 [2022-11-02 20:08:08,640 INFO L226 Difference]: Without dead ends: 1539 [2022-11-02 20:08:08,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:08,642 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 3885 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3885 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:08,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3885 Valid, 3232 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:08:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-02 20:08:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 373. [2022-11-02 20:08:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.3333333333333333) internal successors, (496), 372 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 496 transitions. [2022-11-02 20:08:08,669 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 496 transitions. Word has length 236 [2022-11-02 20:08:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:08,670 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 496 transitions. [2022-11-02 20:08:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 496 transitions. [2022-11-02 20:08:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:08,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:08,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:08,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:08,885 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1132244459, now seen corresponding path program 1 times [2022-11-02 20:08:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:08,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173124628] [2022-11-02 20:08:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:08,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:08,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:08,888 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:08,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:08:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:09,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:10,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:10,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:10,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173124628] [2022-11-02 20:08:10,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173124628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:10,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:10,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813123085] [2022-11-02 20:08:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:10,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:10,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:10,360 INFO L87 Difference]: Start difference. First operand 373 states and 496 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:12,602 INFO L93 Difference]: Finished difference Result 1754 states and 2456 transitions. [2022-11-02 20:08:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:12,605 INFO L225 Difference]: With dead ends: 1754 [2022-11-02 20:08:12,605 INFO L226 Difference]: Without dead ends: 1535 [2022-11-02 20:08:12,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:12,606 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 3869 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3869 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:12,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3869 Valid, 3235 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:08:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-11-02 20:08:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 375. [2022-11-02 20:08:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.3315508021390374) internal successors, (498), 374 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 498 transitions. [2022-11-02 20:08:12,617 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 498 transitions. Word has length 236 [2022-11-02 20:08:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:12,617 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 498 transitions. [2022-11-02 20:08:12,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 498 transitions. [2022-11-02 20:08:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:12,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:12,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:12,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:12,819 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:12,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 266709143, now seen corresponding path program 1 times [2022-11-02 20:08:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:12,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011782870] [2022-11-02 20:08:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:12,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:12,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:12,822 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:12,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:08:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:13,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:13,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:14,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:14,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:14,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011782870] [2022-11-02 20:08:14,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011782870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:14,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:14,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148588795] [2022-11-02 20:08:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:14,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:14,377 INFO L87 Difference]: Start difference. First operand 375 states and 498 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:16,757 INFO L93 Difference]: Finished difference Result 1746 states and 2443 transitions. [2022-11-02 20:08:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:16,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:16,760 INFO L225 Difference]: With dead ends: 1746 [2022-11-02 20:08:16,760 INFO L226 Difference]: Without dead ends: 1527 [2022-11-02 20:08:16,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:16,762 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 3842 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:16,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 3241 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:08:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2022-11-02 20:08:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 379. [2022-11-02 20:08:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.3306878306878307) internal successors, (503), 378 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 503 transitions. [2022-11-02 20:08:16,782 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 503 transitions. Word has length 236 [2022-11-02 20:08:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:16,782 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 503 transitions. [2022-11-02 20:08:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 503 transitions. [2022-11-02 20:08:16,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:16,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:16,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:16,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:17,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:17,005 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash -278163431, now seen corresponding path program 1 times [2022-11-02 20:08:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:17,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265150802] [2022-11-02 20:08:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:17,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:17,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:17,008 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:17,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:08:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:17,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:17,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:18,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:18,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265150802] [2022-11-02 20:08:18,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265150802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:18,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:18,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:18,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970366628] [2022-11-02 20:08:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:18,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:18,398 INFO L87 Difference]: Start difference. First operand 379 states and 503 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:20,754 INFO L93 Difference]: Finished difference Result 1742 states and 2436 transitions. [2022-11-02 20:08:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:20,757 INFO L225 Difference]: With dead ends: 1742 [2022-11-02 20:08:20,757 INFO L226 Difference]: Without dead ends: 1523 [2022-11-02 20:08:20,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:20,758 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 3826 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:20,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 3244 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:08:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-02 20:08:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 381. [2022-11-02 20:08:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.3289473684210527) internal successors, (505), 380 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 505 transitions. [2022-11-02 20:08:20,778 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 505 transitions. Word has length 236 [2022-11-02 20:08:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:20,779 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 505 transitions. [2022-11-02 20:08:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 505 transitions. [2022-11-02 20:08:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:20,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:20,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:20,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:20,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:20,993 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:20,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1226215397, now seen corresponding path program 1 times [2022-11-02 20:08:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:21,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268450942] [2022-11-02 20:08:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:21,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:21,002 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:21,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:08:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:21,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:21,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:22,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:22,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:22,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268450942] [2022-11-02 20:08:22,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268450942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:22,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:22,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:22,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775577652] [2022-11-02 20:08:22,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:22,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:22,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:22,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:22,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:22,463 INFO L87 Difference]: Start difference. First operand 381 states and 505 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:24,762 INFO L93 Difference]: Finished difference Result 1738 states and 2429 transitions. [2022-11-02 20:08:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:24,765 INFO L225 Difference]: With dead ends: 1738 [2022-11-02 20:08:24,765 INFO L226 Difference]: Without dead ends: 1519 [2022-11-02 20:08:24,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:24,767 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 3810 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3810 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:24,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3810 Valid, 3247 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:08:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2022-11-02 20:08:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 383. [2022-11-02 20:08:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.3272251308900525) internal successors, (507), 382 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 507 transitions. [2022-11-02 20:08:24,780 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 507 transitions. Word has length 236 [2022-11-02 20:08:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:24,781 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 507 transitions. [2022-11-02 20:08:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 507 transitions. [2022-11-02 20:08:24,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:24,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:24,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:24,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:24,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:24,994 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:24,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1660720995, now seen corresponding path program 1 times [2022-11-02 20:08:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:24,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850669065] [2022-11-02 20:08:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:24,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:24,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:24,997 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:24,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:08:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:25,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:08:25,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:26,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:26,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:26,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850669065] [2022-11-02 20:08:26,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850669065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:26,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:26,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:26,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672908545] [2022-11-02 20:08:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:26,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:26,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:26,383 INFO L87 Difference]: Start difference. First operand 383 states and 507 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:28,916 INFO L93 Difference]: Finished difference Result 1734 states and 2422 transitions. [2022-11-02 20:08:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:28,934 INFO L225 Difference]: With dead ends: 1734 [2022-11-02 20:08:28,935 INFO L226 Difference]: Without dead ends: 1515 [2022-11-02 20:08:28,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:28,936 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 3794 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3794 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:28,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3794 Valid, 3250 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:08:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-11-02 20:08:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 385. [2022-11-02 20:08:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.3255208333333333) internal successors, (509), 384 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 509 transitions. [2022-11-02 20:08:28,958 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 509 transitions. Word has length 236 [2022-11-02 20:08:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:28,962 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 509 transitions. [2022-11-02 20:08:28,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 509 transitions. [2022-11-02 20:08:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:28,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:28,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:28,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:29,191 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1927649695, now seen corresponding path program 1 times [2022-11-02 20:08:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32926717] [2022-11-02 20:08:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:29,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:29,194 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:29,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:08:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:30,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:30,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:30,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:30,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:30,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32926717] [2022-11-02 20:08:30,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32926717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:30,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:30,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:08:30,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664095837] [2022-11-02 20:08:30,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:30,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:30,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:30,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:30,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:30,879 INFO L87 Difference]: Start difference. First operand 385 states and 509 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:32,988 INFO L93 Difference]: Finished difference Result 1730 states and 2415 transitions. [2022-11-02 20:08:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:32,988 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:32,991 INFO L225 Difference]: With dead ends: 1730 [2022-11-02 20:08:32,991 INFO L226 Difference]: Without dead ends: 1511 [2022-11-02 20:08:32,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:08:32,993 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3778 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:32,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 3493 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:08:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-11-02 20:08:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 387. [2022-11-02 20:08:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.3238341968911918) internal successors, (511), 386 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 511 transitions. [2022-11-02 20:08:33,008 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 511 transitions. Word has length 236 [2022-11-02 20:08:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:33,009 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 511 transitions. [2022-11-02 20:08:33,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 511 transitions. [2022-11-02 20:08:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:33,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:33,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:33,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:33,220 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1505483999, now seen corresponding path program 1 times [2022-11-02 20:08:33,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:33,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429485034] [2022-11-02 20:08:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:33,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:33,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:33,223 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:33,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:08:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:33,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:33,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:34,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:34,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:34,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429485034] [2022-11-02 20:08:34,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429485034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:34,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:34,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199532612] [2022-11-02 20:08:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:34,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:34,758 INFO L87 Difference]: Start difference. First operand 387 states and 511 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:37,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:37,112 INFO L93 Difference]: Finished difference Result 1750 states and 2444 transitions. [2022-11-02 20:08:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:08:37,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:37,115 INFO L225 Difference]: With dead ends: 1750 [2022-11-02 20:08:37,116 INFO L226 Difference]: Without dead ends: 1531 [2022-11-02 20:08:37,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:37,117 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 4105 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 3977 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:37,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 3977 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:08:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-02 20:08:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 389. [2022-11-02 20:08:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.3221649484536082) internal successors, (513), 388 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 513 transitions. [2022-11-02 20:08:37,140 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 513 transitions. Word has length 236 [2022-11-02 20:08:37,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:37,140 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 513 transitions. [2022-11-02 20:08:37,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 513 transitions. [2022-11-02 20:08:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:37,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:37,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:37,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:37,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:37,365 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1017436893, now seen corresponding path program 1 times [2022-11-02 20:08:37,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:37,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139902989] [2022-11-02 20:08:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:37,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:37,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:37,368 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:37,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:08:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:38,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:38,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:38,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:38,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139902989] [2022-11-02 20:08:38,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139902989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:38,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:38,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828751728] [2022-11-02 20:08:38,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:38,831 INFO L87 Difference]: Start difference. First operand 389 states and 513 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:41,123 INFO L93 Difference]: Finished difference Result 1742 states and 2431 transitions. [2022-11-02 20:08:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:08:41,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:41,125 INFO L225 Difference]: With dead ends: 1742 [2022-11-02 20:08:41,126 INFO L226 Difference]: Without dead ends: 1523 [2022-11-02 20:08:41,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:41,127 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 4077 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:41,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 3983 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:08:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-02 20:08:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 393. [2022-11-02 20:08:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.3214285714285714) internal successors, (518), 392 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 518 transitions. [2022-11-02 20:08:41,151 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 518 transitions. Word has length 236 [2022-11-02 20:08:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:41,151 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 518 transitions. [2022-11-02 20:08:41,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 518 transitions. [2022-11-02 20:08:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:41,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:41,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:41,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 20:08:41,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:41,368 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1555527717, now seen corresponding path program 1 times [2022-11-02 20:08:41,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:41,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073258740] [2022-11-02 20:08:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:41,371 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:41,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:08:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:42,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:42,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:42,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:42,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073258740] [2022-11-02 20:08:42,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073258740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:42,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:42,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508172448] [2022-11-02 20:08:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:42,877 INFO L87 Difference]: Start difference. First operand 393 states and 518 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:45,173 INFO L93 Difference]: Finished difference Result 1738 states and 2424 transitions. [2022-11-02 20:08:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:08:45,174 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:45,176 INFO L225 Difference]: With dead ends: 1738 [2022-11-02 20:08:45,177 INFO L226 Difference]: Without dead ends: 1519 [2022-11-02 20:08:45,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:45,179 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 4060 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4060 SdHoareTripleChecker+Valid, 3986 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:45,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4060 Valid, 3986 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:08:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2022-11-02 20:08:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 395. [2022-11-02 20:08:45,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 394 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:45,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 520 transitions. [2022-11-02 20:08:45,206 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 520 transitions. Word has length 236 [2022-11-02 20:08:45,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:45,207 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 520 transitions. [2022-11-02 20:08:45,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 520 transitions. [2022-11-02 20:08:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:45,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:45,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:45,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:45,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:45,425 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:45,426 INFO L85 PathProgramCache]: Analyzing trace with hash -810507353, now seen corresponding path program 1 times [2022-11-02 20:08:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:45,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895232965] [2022-11-02 20:08:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:45,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:45,428 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:45,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:08:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:46,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:46,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:47,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:47,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:47,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895232965] [2022-11-02 20:08:47,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895232965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:47,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:47,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:47,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77252744] [2022-11-02 20:08:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:47,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:47,210 INFO L87 Difference]: Start difference. First operand 395 states and 520 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:49,649 INFO L93 Difference]: Finished difference Result 1734 states and 2417 transitions. [2022-11-02 20:08:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:08:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:49,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:49,652 INFO L225 Difference]: With dead ends: 1734 [2022-11-02 20:08:49,652 INFO L226 Difference]: Without dead ends: 1515 [2022-11-02 20:08:49,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:49,654 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 4043 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:49,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4043 Valid, 3989 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:08:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-11-02 20:08:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 397. [2022-11-02 20:08:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3181818181818181) internal successors, (522), 396 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 522 transitions. [2022-11-02 20:08:49,678 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 522 transitions. Word has length 236 [2022-11-02 20:08:49,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:49,678 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 522 transitions. [2022-11-02 20:08:49,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 522 transitions. [2022-11-02 20:08:49,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:49,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:49,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:49,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-02 20:08:49,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:49,898 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash 916637609, now seen corresponding path program 1 times [2022-11-02 20:08:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:49,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187699885] [2022-11-02 20:08:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:49,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:49,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:49,902 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:49,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:08:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:50,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:50,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:51,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:51,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:51,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187699885] [2022-11-02 20:08:51,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187699885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:51,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:51,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:51,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628278685] [2022-11-02 20:08:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:51,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:51,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:51,705 INFO L87 Difference]: Start difference. First operand 397 states and 522 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:54,379 INFO L93 Difference]: Finished difference Result 1730 states and 2410 transitions. [2022-11-02 20:08:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:08:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:54,383 INFO L225 Difference]: With dead ends: 1730 [2022-11-02 20:08:54,383 INFO L226 Difference]: Without dead ends: 1511 [2022-11-02 20:08:54,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:54,385 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 4026 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:54,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4026 Valid, 3992 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:08:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2022-11-02 20:08:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 399. [2022-11-02 20:08:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3165829145728642) internal successors, (524), 398 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 524 transitions. [2022-11-02 20:08:54,413 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 524 transitions. Word has length 236 [2022-11-02 20:08:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:54,413 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 524 transitions. [2022-11-02 20:08:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 524 transitions. [2022-11-02 20:08:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:54,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:54,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:54,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:54,643 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -730725333, now seen corresponding path program 1 times [2022-11-02 20:08:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:54,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277874096] [2022-11-02 20:08:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:54,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:54,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:54,646 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:54,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:08:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:55,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:08:55,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:56,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:56,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:56,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277874096] [2022-11-02 20:08:56,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277874096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:56,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:56,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:08:56,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747226018] [2022-11-02 20:08:56,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:56,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:56,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:56,429 INFO L87 Difference]: Start difference. First operand 399 states and 524 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:59,108 INFO L93 Difference]: Finished difference Result 1726 states and 2403 transitions. [2022-11-02 20:08:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:08:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:08:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:59,116 INFO L225 Difference]: With dead ends: 1726 [2022-11-02 20:08:59,116 INFO L226 Difference]: Without dead ends: 1507 [2022-11-02 20:08:59,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:59,118 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 4009 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4009 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:59,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4009 Valid, 3995 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:08:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-11-02 20:08:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 401. [2022-11-02 20:08:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.315) internal successors, (526), 400 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 526 transitions. [2022-11-02 20:08:59,148 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 526 transitions. Word has length 236 [2022-11-02 20:08:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:59,149 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 526 transitions. [2022-11-02 20:08:59,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 526 transitions. [2022-11-02 20:08:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:08:59,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:59,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:59,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:59,378 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:59,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1769309907, now seen corresponding path program 1 times [2022-11-02 20:08:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506677610] [2022-11-02 20:08:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:59,382 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:59,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:09:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:00,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:09:00,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:01,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:01,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:01,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506677610] [2022-11-02 20:09:01,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506677610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:01,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887436112] [2022-11-02 20:09:01,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:01,250 INFO L87 Difference]: Start difference. First operand 401 states and 526 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:03,876 INFO L93 Difference]: Finished difference Result 1722 states and 2396 transitions. [2022-11-02 20:09:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:09:03,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:03,879 INFO L225 Difference]: With dead ends: 1722 [2022-11-02 20:09:03,879 INFO L226 Difference]: Without dead ends: 1503 [2022-11-02 20:09:03,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:09:03,880 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 3992 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:03,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3992 Valid, 3998 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:09:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-11-02 20:09:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 403. [2022-11-02 20:09:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.3134328358208955) internal successors, (528), 402 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2022-11-02 20:09:03,907 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 236 [2022-11-02 20:09:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:03,907 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2022-11-02 20:09:03,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2022-11-02 20:09:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:03,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:03,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:03,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 20:09:04,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:04,113 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 383796911, now seen corresponding path program 1 times [2022-11-02 20:09:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:04,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980514288] [2022-11-02 20:09:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:04,116 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:04,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:09:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:05,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:09:05,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:05,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:05,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:05,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980514288] [2022-11-02 20:09:05,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980514288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:05,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:05,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:05,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870931820] [2022-11-02 20:09:05,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:05,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:05,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:05,925 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:08,608 INFO L93 Difference]: Finished difference Result 1718 states and 2389 transitions. [2022-11-02 20:09:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:09:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:08,610 INFO L225 Difference]: With dead ends: 1718 [2022-11-02 20:09:08,610 INFO L226 Difference]: Without dead ends: 1499 [2022-11-02 20:09:08,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:09:08,612 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 3975 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3975 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:08,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3975 Valid, 4001 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:09:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2022-11-02 20:09:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 405. [2022-11-02 20:09:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.311881188118812) internal successors, (530), 404 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 530 transitions. [2022-11-02 20:09:08,635 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 530 transitions. Word has length 236 [2022-11-02 20:09:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:08,635 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 530 transitions. [2022-11-02 20:09:08,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 530 transitions. [2022-11-02 20:09:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:08,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:08,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:08,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:08,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:08,838 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash 502238385, now seen corresponding path program 1 times [2022-11-02 20:09:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:08,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045356696] [2022-11-02 20:09:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:08,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:08,841 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:08,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:09:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:09,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 20:09:09,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:10,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:10,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:10,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045356696] [2022-11-02 20:09:10,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045356696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:10,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:10,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:09:10,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071267614] [2022-11-02 20:09:10,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:10,743 INFO L87 Difference]: Start difference. First operand 405 states and 530 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:13,490 INFO L93 Difference]: Finished difference Result 1714 states and 2382 transitions. [2022-11-02 20:09:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:09:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:13,493 INFO L225 Difference]: With dead ends: 1714 [2022-11-02 20:09:13,493 INFO L226 Difference]: Without dead ends: 1495 [2022-11-02 20:09:13,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:09:13,494 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 3958 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:13,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3958 Valid, 4004 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:09:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-11-02 20:09:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 407. [2022-11-02 20:09:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.3103448275862069) internal successors, (532), 406 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 532 transitions. [2022-11-02 20:09:13,513 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 532 transitions. Word has length 236 [2022-11-02 20:09:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:13,513 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 532 transitions. [2022-11-02 20:09:13,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 532 transitions. [2022-11-02 20:09:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:13,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:13,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:13,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:13,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:13,725 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1531155661, now seen corresponding path program 1 times [2022-11-02 20:09:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:13,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697989339] [2022-11-02 20:09:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:13,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:13,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:13,728 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:13,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:09:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:14,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:14,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:15,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:15,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:15,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697989339] [2022-11-02 20:09:15,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697989339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:15,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:15,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:09:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58266015] [2022-11-02 20:09:15,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:15,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:09:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:15,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:09:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:09:15,201 INFO L87 Difference]: Start difference. First operand 407 states and 532 transitions. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:17,415 INFO L93 Difference]: Finished difference Result 1630 states and 2255 transitions. [2022-11-02 20:09:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:09:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:17,417 INFO L225 Difference]: With dead ends: 1630 [2022-11-02 20:09:17,417 INFO L226 Difference]: Without dead ends: 1411 [2022-11-02 20:09:17,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:09:17,418 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 3230 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3230 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:17,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3230 Valid, 2857 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:09:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-11-02 20:09:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 411. [2022-11-02 20:09:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.3097560975609757) internal successors, (537), 410 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 537 transitions. [2022-11-02 20:09:17,446 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 537 transitions. Word has length 236 [2022-11-02 20:09:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:17,446 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 537 transitions. [2022-11-02 20:09:17,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 537 transitions. [2022-11-02 20:09:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:17,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:17,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:17,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:17,675 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -500114763, now seen corresponding path program 1 times [2022-11-02 20:09:17,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:17,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716330803] [2022-11-02 20:09:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:17,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:17,680 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:17,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:09:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:18,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:18,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:19,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:19,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:19,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716330803] [2022-11-02 20:09:19,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716330803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:19,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:19,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:19,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448897061] [2022-11-02 20:09:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:19,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:19,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:19,378 INFO L87 Difference]: Start difference. First operand 411 states and 537 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:21,858 INFO L93 Difference]: Finished difference Result 1726 states and 2398 transitions. [2022-11-02 20:09:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:21,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:21,861 INFO L225 Difference]: With dead ends: 1726 [2022-11-02 20:09:21,861 INFO L226 Difference]: Without dead ends: 1507 [2022-11-02 20:09:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:21,863 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 3673 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:21,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3673 Valid, 3268 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:09:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-11-02 20:09:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 413. [2022-11-02 20:09:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.308252427184466) internal successors, (539), 412 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 539 transitions. [2022-11-02 20:09:21,895 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 539 transitions. Word has length 236 [2022-11-02 20:09:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:21,896 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 539 transitions. [2022-11-02 20:09:21,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 539 transitions. [2022-11-02 20:09:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:21,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:21,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:21,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:22,113 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1100956343, now seen corresponding path program 1 times [2022-11-02 20:09:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:22,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851775448] [2022-11-02 20:09:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:22,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:22,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:22,117 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:22,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:09:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:23,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:23,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:23,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:23,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:23,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851775448] [2022-11-02 20:09:23,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851775448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:23,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:23,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:23,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239849190] [2022-11-02 20:09:23,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:23,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:23,966 INFO L87 Difference]: Start difference. First operand 413 states and 539 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:26,411 INFO L93 Difference]: Finished difference Result 1722 states and 2391 transitions. [2022-11-02 20:09:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:26,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:26,413 INFO L225 Difference]: With dead ends: 1722 [2022-11-02 20:09:26,413 INFO L226 Difference]: Without dead ends: 1503 [2022-11-02 20:09:26,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:26,414 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 3657 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:26,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3657 Valid, 3271 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:09:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-11-02 20:09:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 415. [2022-11-02 20:09:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.3067632850241546) internal successors, (541), 414 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 541 transitions. [2022-11-02 20:09:26,436 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 541 transitions. Word has length 236 [2022-11-02 20:09:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:26,436 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 541 transitions. [2022-11-02 20:09:26,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 541 transitions. [2022-11-02 20:09:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:26,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:26,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:26,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:26,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,653 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1842625735, now seen corresponding path program 1 times [2022-11-02 20:09:26,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:26,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755012278] [2022-11-02 20:09:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:26,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:26,656 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:26,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:09:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:27,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:27,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:28,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:28,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:28,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755012278] [2022-11-02 20:09:28,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755012278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:28,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:28,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:28,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910687297] [2022-11-02 20:09:28,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:28,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:28,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:28,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:28,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:28,438 INFO L87 Difference]: Start difference. First operand 415 states and 541 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:31,172 INFO L93 Difference]: Finished difference Result 1718 states and 2384 transitions. [2022-11-02 20:09:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:31,174 INFO L225 Difference]: With dead ends: 1718 [2022-11-02 20:09:31,174 INFO L226 Difference]: Without dead ends: 1499 [2022-11-02 20:09:31,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:31,175 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 3641 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3641 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:31,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3641 Valid, 3274 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:09:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2022-11-02 20:09:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 417. [2022-11-02 20:09:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.3052884615384615) internal successors, (543), 416 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 543 transitions. [2022-11-02 20:09:31,198 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 543 transitions. Word has length 236 [2022-11-02 20:09:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:31,199 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 543 transitions. [2022-11-02 20:09:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 543 transitions. [2022-11-02 20:09:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:31,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:31,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:31,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:31,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:31,402 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1568832571, now seen corresponding path program 1 times [2022-11-02 20:09:31,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:31,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539910579] [2022-11-02 20:09:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:31,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:31,405 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:31,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:09:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:32,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:32,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:33,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:33,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:33,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539910579] [2022-11-02 20:09:33,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539910579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:33,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:33,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377600439] [2022-11-02 20:09:33,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:33,174 INFO L87 Difference]: Start difference. First operand 417 states and 543 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:35,972 INFO L93 Difference]: Finished difference Result 1714 states and 2377 transitions. [2022-11-02 20:09:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:35,974 INFO L225 Difference]: With dead ends: 1714 [2022-11-02 20:09:35,974 INFO L226 Difference]: Without dead ends: 1495 [2022-11-02 20:09:35,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:35,975 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3625 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:35,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 3277 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:09:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-11-02 20:09:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 419. [2022-11-02 20:09:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.3038277511961722) internal successors, (545), 418 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 545 transitions. [2022-11-02 20:09:35,996 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 545 transitions. Word has length 236 [2022-11-02 20:09:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:35,997 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 545 transitions. [2022-11-02 20:09:35,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 545 transitions. [2022-11-02 20:09:35,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:35,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:35,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:36,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:36,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:36,201 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash -371749443, now seen corresponding path program 1 times [2022-11-02 20:09:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:36,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361984966] [2022-11-02 20:09:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:36,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:36,204 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:36,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:09:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:37,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:37,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:38,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:38,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:38,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361984966] [2022-11-02 20:09:38,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361984966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:38,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:38,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:38,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229317843] [2022-11-02 20:09:38,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:38,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:38,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:38,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:38,035 INFO L87 Difference]: Start difference. First operand 419 states and 545 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:40,755 INFO L93 Difference]: Finished difference Result 1710 states and 2370 transitions. [2022-11-02 20:09:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:40,757 INFO L225 Difference]: With dead ends: 1710 [2022-11-02 20:09:40,757 INFO L226 Difference]: Without dead ends: 1491 [2022-11-02 20:09:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:40,758 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 3609 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:40,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3609 Valid, 3280 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 20:09:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2022-11-02 20:09:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 421. [2022-11-02 20:09:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.3023809523809524) internal successors, (547), 420 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 547 transitions. [2022-11-02 20:09:40,781 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 547 transitions. Word has length 236 [2022-11-02 20:09:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:40,781 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 547 transitions. [2022-11-02 20:09:40,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 547 transitions. [2022-11-02 20:09:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:40,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:40,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:40,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:41,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:41,005 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:41,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1142483009, now seen corresponding path program 1 times [2022-11-02 20:09:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:41,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310533381] [2022-11-02 20:09:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:41,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:41,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:41,008 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:41,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:09:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:41,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:41,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:42,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:42,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310533381] [2022-11-02 20:09:42,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310533381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:42,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:42,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773363964] [2022-11-02 20:09:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:42,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:42,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:42,875 INFO L87 Difference]: Start difference. First operand 421 states and 547 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:45,637 INFO L93 Difference]: Finished difference Result 1702 states and 2357 transitions. [2022-11-02 20:09:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:45,638 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:45,639 INFO L225 Difference]: With dead ends: 1702 [2022-11-02 20:09:45,639 INFO L226 Difference]: Without dead ends: 1483 [2022-11-02 20:09:45,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:45,640 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 3582 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3582 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:45,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3582 Valid, 3286 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:09:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2022-11-02 20:09:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 425. [2022-11-02 20:09:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.3018867924528301) internal successors, (552), 424 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 552 transitions. [2022-11-02 20:09:45,664 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 552 transitions. Word has length 236 [2022-11-02 20:09:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:45,664 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 552 transitions. [2022-11-02 20:09:45,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 552 transitions. [2022-11-02 20:09:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:45,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:45,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:45,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:45,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:45,866 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:45,867 INFO L85 PathProgramCache]: Analyzing trace with hash 733999809, now seen corresponding path program 1 times [2022-11-02 20:09:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:45,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244104988] [2022-11-02 20:09:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:45,870 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:45,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:09:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:46,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:46,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:47,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:47,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244104988] [2022-11-02 20:09:47,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244104988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:47,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:47,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673748998] [2022-11-02 20:09:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:47,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:47,436 INFO L87 Difference]: Start difference. First operand 425 states and 552 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:49,737 INFO L93 Difference]: Finished difference Result 1698 states and 2350 transitions. [2022-11-02 20:09:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:49,739 INFO L225 Difference]: With dead ends: 1698 [2022-11-02 20:09:49,739 INFO L226 Difference]: Without dead ends: 1479 [2022-11-02 20:09:49,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:49,740 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 3566 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:49,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3566 Valid, 3289 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:09:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-11-02 20:09:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 427. [2022-11-02 20:09:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.300469483568075) internal successors, (554), 426 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 554 transitions. [2022-11-02 20:09:49,759 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 554 transitions. Word has length 236 [2022-11-02 20:09:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:49,759 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 554 transitions. [2022-11-02 20:09:49,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 554 transitions. [2022-11-02 20:09:49,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:49,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:49,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:49,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:49,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:49,962 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2058856003, now seen corresponding path program 1 times [2022-11-02 20:09:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:49,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397806400] [2022-11-02 20:09:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:49,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:49,965 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:49,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:09:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:50,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:50,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:51,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:51,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:51,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397806400] [2022-11-02 20:09:51,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397806400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:51,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:51,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:51,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420593787] [2022-11-02 20:09:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:51,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:51,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:51,802 INFO L87 Difference]: Start difference. First operand 427 states and 554 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:54,708 INFO L93 Difference]: Finished difference Result 1694 states and 2343 transitions. [2022-11-02 20:09:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:09:54,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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 236 [2022-11-02 20:09:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:54,710 INFO L225 Difference]: With dead ends: 1694 [2022-11-02 20:09:54,710 INFO L226 Difference]: Without dead ends: 1475 [2022-11-02 20:09:54,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-11-02 20:09:54,712 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 3550 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3550 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:54,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3550 Valid, 3292 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:09:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2022-11-02 20:09:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 429. [2022-11-02 20:09:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.2990654205607477) internal successors, (556), 428 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 556 transitions. [2022-11-02 20:09:54,738 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 556 transitions. Word has length 236 [2022-11-02 20:09:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:54,739 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 556 transitions. [2022-11-02 20:09:54,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 556 transitions. [2022-11-02 20:09:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-02 20:09:54,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:54,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:54,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:54,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:54,941 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:54,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1001017925, now seen corresponding path program 1 times [2022-11-02 20:09:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:54,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936139625] [2022-11-02 20:09:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:54,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:54,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:54,945 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:54,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3eae94-03ea-4678-940c-98a664fa6de0/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:09:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:55,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:09:55,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:56,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:56,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:56,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936139625] [2022-11-02 20:09:56,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936139625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:56,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:56,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:09:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867524627] [2022-11-02 20:09:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:09:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:09:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:56,826 INFO L87 Difference]: Start difference. First operand 429 states and 556 transitions. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 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)