./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.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_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/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_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/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_5a2deee5-e6ca-4083-9bff-77c8b809e505/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 b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c --- 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 20:31:41,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:31:41,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:31:41,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:31:41,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:31:41,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:31:41,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:31:41,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:31:41,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:31:41,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:31:41,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:31:41,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:31:41,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:31:41,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:31:41,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:31:41,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:31:41,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:31:41,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:31:41,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:31:41,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:31:41,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:31:41,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:31:41,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:31:41,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:31:41,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:31:41,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:31:41,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:31:41,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:31:41,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:31:41,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:31:41,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:31:41,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:31:41,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:31:41,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:31:41,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:31:41,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:31:41,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:31:41,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:31:41,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:31:41,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:31:41,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:31:41,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:31:41,930 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:31:41,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:31:41,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:31:41,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:31:41,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:31:41,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:31:41,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:31:41,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:31:41,933 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:31:41,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:31:41,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:31:41,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:31:41,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:31:41,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:31:41,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:31:41,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:31:41,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:31:41,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:31:41,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:31:41,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:31:41,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:31:41,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:41,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:31:41,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:31:41,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:31:41,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:31:41,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:31:41,941 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:31:41,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:31:41,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:31:41,942 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_5a2deee5-e6ca-4083-9bff-77c8b809e505/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c [2022-11-02 20:31:42,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:31:42,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:31:42,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:31:42,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:31:42,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:31:42,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c [2022-11-02 20:31:42,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/53fa7ac56/7ae71e7a0cba457eb91a138f3248dd7f/FLAG726d31960 [2022-11-02 20:31:42,789 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:31:42,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c [2022-11-02 20:31:42,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/53fa7ac56/7ae71e7a0cba457eb91a138f3248dd7f/FLAG726d31960 [2022-11-02 20:31:43,143 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/53fa7ac56/7ae71e7a0cba457eb91a138f3248dd7f [2022-11-02 20:31:43,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:31:43,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:31:43,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:43,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:31:43,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:31:43,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a99121f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43, skipping insertion in model container [2022-11-02 20:31:43,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:31:43,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:31:43,409 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_5a2deee5-e6ca-4083-9bff-77c8b809e505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c[1107,1120] [2022-11-02 20:31:43,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:43,518 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:31:43,536 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_5a2deee5-e6ca-4083-9bff-77c8b809e505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c[1107,1120] [2022-11-02 20:31:43,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:43,591 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:31:43,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43 WrapperNode [2022-11-02 20:31:43,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:43,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:43,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:31:43,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:31:43,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,670 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 198 [2022-11-02 20:31:43,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:43,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:31:43,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:31:43,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:31:43,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:31:43,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:31:43,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:31:43,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:31:43,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:43,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:43,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:31:43,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:31:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:31:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:31:43,898 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:31:43,900 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:31:44,216 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:31:44,242 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:31:44,243 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:31:44,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:44 BoogieIcfgContainer [2022-11-02 20:31:44,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:31:44,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:31:44,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:31:44,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:31:44,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:31:43" (1/3) ... [2022-11-02 20:31:44,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b39f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:44, skipping insertion in model container [2022-11-02 20:31:44,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (2/3) ... [2022-11-02 20:31:44,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b39f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:44, skipping insertion in model container [2022-11-02 20:31:44,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:44" (3/3) ... [2022-11-02 20:31:44,266 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal18.c [2022-11-02 20:31:44,323 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:31:44,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:31:44,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:31:44,450 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;@7e2b6031, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:31:44,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:31:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:44,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:31:44,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:44,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:44,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:31:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:44,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727510528] [2022-11-02 20:31:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:45,392 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 20:31:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:45,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727510528] [2022-11-02 20:31:45,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727510528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:45,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:45,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128283868] [2022-11-02 20:31:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:45,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:45,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:45,461 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:45,551 INFO L93 Difference]: Finished difference Result 94 states and 140 transitions. [2022-11-02 20:31:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:31:45,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:31:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:45,564 INFO L225 Difference]: With dead ends: 94 [2022-11-02 20:31:45,564 INFO L226 Difference]: Without dead ends: 61 [2022-11-02 20:31:45,568 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 20:31:45,572 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 78 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:45,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-02 20:31:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 33. [2022-11-02 20:31:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2022-11-02 20:31:45,628 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 9 [2022-11-02 20:31:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:45,629 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2022-11-02 20:31:45,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2022-11-02 20:31:45,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:31:45,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:45,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:45,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:31:45,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:31:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:45,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875454720] [2022-11-02 20:31:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:45,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:45,832 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 20:31:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:45,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875454720] [2022-11-02 20:31:45,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875454720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:45,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:45,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843575455] [2022-11-02 20:31:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:45,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:45,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:45,837 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:45,888 INFO L93 Difference]: Finished difference Result 92 states and 128 transitions. [2022-11-02 20:31:45,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:31:45,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:31:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:45,891 INFO L225 Difference]: With dead ends: 92 [2022-11-02 20:31:45,892 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 20:31:45,893 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 20:31:45,895 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 75 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:45,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 120 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 20:31:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2022-11-02 20:31:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-11-02 20:31:45,904 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 9 [2022-11-02 20:31:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:45,905 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-02 20:31:45,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2022-11-02 20:31:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:31:45,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:45,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:31:45,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 20:31:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:45,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634450516] [2022-11-02 20:31:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:31:46,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:31:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:31:46,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:31:46,194 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:31:46,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:31:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:31:46,216 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:31:46,219 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:31:46,257 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:31:46,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:31:46 BoogieIcfgContainer [2022-11-02 20:31:46,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:31:46,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:31:46,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:31:46,277 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:31:46,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:44" (3/4) ... [2022-11-02 20:31:46,281 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:31:46,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:31:46,282 INFO L158 Benchmark]: Toolchain (without parser) took 3134.59ms. Allocated memory is still 155.2MB. Free memory was 120.6MB in the beginning and 112.7MB in the end (delta: 7.9MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-02 20:31:46,283 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 74.9MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:31:46,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.03ms. Allocated memory is still 155.2MB. Free memory was 120.6MB in the beginning and 128.6MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:31:46,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.51ms. Allocated memory is still 155.2MB. Free memory was 128.6MB in the beginning and 125.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:31:46,285 INFO L158 Benchmark]: Boogie Preprocessor took 35.45ms. Allocated memory is still 155.2MB. Free memory was 125.4MB in the beginning and 123.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:31:46,285 INFO L158 Benchmark]: RCFGBuilder took 535.20ms. Allocated memory is still 155.2MB. Free memory was 123.3MB in the beginning and 102.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 20:31:46,286 INFO L158 Benchmark]: TraceAbstraction took 2027.15ms. Allocated memory is still 155.2MB. Free memory was 102.3MB in the beginning and 113.8MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:31:46,286 INFO L158 Benchmark]: Witness Printer took 5.14ms. Allocated memory is still 155.2MB. Free memory was 113.8MB in the beginning and 112.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:31:46,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 74.9MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.03ms. Allocated memory is still 155.2MB. Free memory was 120.6MB in the beginning and 128.6MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.51ms. Allocated memory is still 155.2MB. Free memory was 128.6MB in the beginning and 125.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.45ms. Allocated memory is still 155.2MB. Free memory was 125.4MB in the beginning and 123.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.20ms. Allocated memory is still 155.2MB. Free memory was 123.3MB in the beginning and 102.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2027.15ms. Allocated memory is still 155.2MB. Free memory was 102.3MB in the beginning and 113.8MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.14ms. Allocated memory is still 155.2MB. Free memory was 113.8MB in the beginning and 112.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 93, overapproximation of bitwiseOr at line 91, overapproximation of bitwiseAnd at line 85. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 2); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (2 - 1); [L31] const SORT_1 var_10 = 0; [L32] const SORT_5 var_14 = 0; [L33] const SORT_1 var_29 = 1; [L34] const SORT_5 var_39 = 1; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L38] SORT_1 input_4; [L39] SORT_5 input_6; [L40] SORT_1 input_7; [L41] SORT_5 input_8; [L42] SORT_5 input_9; [L44] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_5 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L46] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_5 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L49] SORT_1 init_12_arg_1 = var_10; [L50] state_11 = init_12_arg_1 [L51] SORT_5 init_16_arg_1 = var_14; [L52] state_15 = init_16_arg_1 [L53] SORT_1 init_18_arg_1 = var_10; [L54] state_17 = init_18_arg_1 [L55] SORT_5 init_22_arg_1 = var_14; [L56] state_21 = init_22_arg_1 VAL [init_12_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_22_arg_1=0, mask_SORT_1=1, mask_SORT_5=3, msb_SORT_1=1, msb_SORT_5=2, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_14=0, var_29=1, var_39=1] [L59] input_2 = __VERIFIER_nondet_uchar() [L60] input_2 = input_2 & mask_SORT_1 [L61] input_3 = __VERIFIER_nondet_uchar() [L62] input_3 = input_3 & mask_SORT_1 [L63] input_4 = __VERIFIER_nondet_uchar() [L64] input_6 = __VERIFIER_nondet_uchar() [L65] input_7 = __VERIFIER_nondet_uchar() [L66] input_8 = __VERIFIER_nondet_uchar() [L67] input_9 = __VERIFIER_nondet_uchar() [L70] SORT_1 var_13_arg_0 = state_11; [L71] SORT_1 var_13 = ~var_13_arg_0; [L72] SORT_1 var_19_arg_0 = state_17; [L73] SORT_5 var_19_arg_1 = state_15; [L74] SORT_5 var_19_arg_2 = input_6; VAL [init_12_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_22_arg_1=0, input_2=0, input_3=1, input_4=5, input_6=1, input_7=6, input_8=4, input_9=3, mask_SORT_1=1, mask_SORT_5=3, msb_SORT_1=1, msb_SORT_5=2, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_13_arg_0=0, var_14=0, var_19_arg_0=0, var_19_arg_1=0, var_19_arg_2=1, var_29=1, var_39=1] [L75] EXPR var_19_arg_0 ? var_19_arg_1 : var_19_arg_2 VAL [init_12_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_22_arg_1=0, input_2=0, input_3=1, input_4=5, input_6=1, input_7=6, input_8=4, input_9=3, mask_SORT_1=1, mask_SORT_5=3, msb_SORT_1=1, msb_SORT_5=2, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_13_arg_0=0, var_14=0, var_19_arg_0=0, var_19_arg_0 ? var_19_arg_1 : var_19_arg_2=1, var_19_arg_1=0, var_19_arg_2=1, var_29=1, var_39=1] [L75] SORT_5 var_19 = var_19_arg_0 ? var_19_arg_1 : var_19_arg_2; [L76] SORT_5 var_20_arg_0 = var_19; [L77] SORT_1 var_20 = var_20_arg_0 >> 0; [L78] var_20 = var_20 & mask_SORT_1 [L79] SORT_1 var_23_arg_0 = state_17; [L80] SORT_5 var_23_arg_1 = state_21; [L81] SORT_5 var_23_arg_2 = input_6; VAL [init_12_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_22_arg_1=0, input_2=0, input_3=1, input_4=5, input_6=1, input_7=6, input_8=4, input_9=3, mask_SORT_1=1, mask_SORT_5=3, msb_SORT_1=1, msb_SORT_5=2, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_13_arg_0=0, var_14=0, var_19=1, var_19_arg_0=0, var_19_arg_1=0, var_19_arg_2=1, var_20=1, var_20_arg_0=1, var_23_arg_0=0, var_23_arg_1=0, var_23_arg_2=1, var_29=1, var_39=1] [L82] EXPR var_23_arg_0 ? var_23_arg_1 : var_23_arg_2 VAL [init_12_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_22_arg_1=0, input_2=0, input_3=1, input_4=5, input_6=1, input_7=6, input_8=4, input_9=3, mask_SORT_1=1, mask_SORT_5=3, msb_SORT_1=1, msb_SORT_5=2, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_13_arg_0=0, var_14=0, var_19=1, var_19_arg_0=0, var_19_arg_1=0, var_19_arg_2=1, var_20=1, var_20_arg_0=1, var_23_arg_0=0, var_23_arg_0 ? var_23_arg_1 : var_23_arg_2=1, var_23_arg_1=0, var_23_arg_2=1, var_29=1, var_39=1] [L82] SORT_5 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L83] SORT_5 var_24_arg_0 = var_23; [L84] SORT_1 var_24 = var_24_arg_0 >> 0; [L85] var_24 = var_24 & mask_SORT_1 [L86] SORT_1 var_25_arg_0 = var_20; [L87] SORT_1 var_25_arg_1 = var_24; [L88] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L89] SORT_1 var_26_arg_0 = var_13; [L90] SORT_1 var_26_arg_1 = var_25; [L91] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L92] SORT_1 var_30_arg_0 = var_26; [L93] SORT_1 var_30 = ~var_30_arg_0; [L94] SORT_1 var_31_arg_0 = var_29; [L95] SORT_1 var_31_arg_1 = var_30; [L96] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L97] var_31 = var_31 & mask_SORT_1 [L98] SORT_1 bad_32_arg_0 = var_31; [L99] CALL __VERIFIER_assert(!(bad_32_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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 239 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 155 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 84 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 56 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 20:31:46,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/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_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/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_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/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_5a2deee5-e6ca-4083-9bff-77c8b809e505/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 b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c --- 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 20:31:49,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:31:49,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:31:49,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:31:49,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:31:49,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:31:49,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:31:49,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:31:49,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:31:49,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:31:49,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:31:49,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:31:49,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:31:49,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:31:49,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:31:49,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:31:49,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:31:49,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:31:49,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:31:49,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:31:49,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:31:49,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:31:49,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:31:49,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:31:49,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:31:49,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:31:49,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:31:49,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:31:49,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:31:49,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:31:49,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:31:49,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:31:49,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:31:49,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:31:49,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:31:49,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:31:49,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:31:49,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:31:49,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:31:49,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:31:49,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:31:49,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:31:49,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:31:49,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:31:49,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:31:49,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:31:49,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:31:49,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:31:49,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:31:49,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:31:49,353 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:31:49,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:31:49,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:31:49,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:31:49,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:31:49,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:31:49,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:31:49,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:31:49,356 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:31:49,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:31:49,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:31:49,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:31:49,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:31:49,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:31:49,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:31:49,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:49,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:31:49,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:31:49,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:31:49,359 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:31:49,360 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:31:49,360 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:31:49,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:31:49,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:31:49,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:31:49,361 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_5a2deee5-e6ca-4083-9bff-77c8b809e505/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c [2022-11-02 20:31:49,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:31:49,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:31:49,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:31:49,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:31:49,861 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:31:49,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c [2022-11-02 20:31:49,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/2727386a0/fa5cc05ce91f491d8e5c2a08bb33466b/FLAGa720a3067 [2022-11-02 20:31:50,660 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:31:50,660 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c [2022-11-02 20:31:50,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/2727386a0/fa5cc05ce91f491d8e5c2a08bb33466b/FLAGa720a3067 [2022-11-02 20:31:50,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/data/2727386a0/fa5cc05ce91f491d8e5c2a08bb33466b [2022-11-02 20:31:50,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:31:50,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:31:50,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:50,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:31:50,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:31:50,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:50" (1/1) ... [2022-11-02 20:31:50,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f57bd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:50, skipping insertion in model container [2022-11-02 20:31:50,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:50" (1/1) ... [2022-11-02 20:31:51,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:31:51,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:31:51,175 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_5a2deee5-e6ca-4083-9bff-77c8b809e505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c[1107,1120] [2022-11-02 20:31:51,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:51,246 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:31:51,275 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_5a2deee5-e6ca-4083-9bff-77c8b809e505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal18.c[1107,1120] [2022-11-02 20:31:51,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:51,372 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:31:51,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51 WrapperNode [2022-11-02 20:31:51,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:51,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:51,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:31:51,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:31:51,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,454 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 198 [2022-11-02 20:31:51,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:51,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:31:51,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:31:51,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:31:51,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:31:51,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:31:51,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:31:51,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:31:51,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (1/1) ... [2022-11-02 20:31:51,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:51,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:51,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:31:51,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:31:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:31:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:31:51,798 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:31:51,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:31:52,196 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:31:52,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:31:52,212 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:31:52,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:52 BoogieIcfgContainer [2022-11-02 20:31:52,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:31:52,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:31:52,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:31:52,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:31:52,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:31:50" (1/3) ... [2022-11-02 20:31:52,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737838f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:52, skipping insertion in model container [2022-11-02 20:31:52,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:51" (2/3) ... [2022-11-02 20:31:52,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737838f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:52, skipping insertion in model container [2022-11-02 20:31:52,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:52" (3/3) ... [2022-11-02 20:31:52,229 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal18.c [2022-11-02 20:31:52,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:31:52,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:31:52,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:31:52,361 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;@6850d69a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:31:52,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:31:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:31:52,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:52,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:52,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 20:31:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:52,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768592505] [2022-11-02 20:31:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:52,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:52,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:52,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:52,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:31:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:52,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:31:52,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:52,727 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 20:31:52,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:52,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:52,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768592505] [2022-11-02 20:31:52,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768592505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:52,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:52,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940404033] [2022-11-02 20:31:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:52,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:52,784 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:52,847 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2022-11-02 20:31:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:31:52,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:31:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:52,865 INFO L225 Difference]: With dead ends: 121 [2022-11-02 20:31:52,865 INFO L226 Difference]: Without dead ends: 88 [2022-11-02 20:31:52,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 20:31:52,873 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 116 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:52,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 155 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-02 20:31:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 33. [2022-11-02 20:31:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2022-11-02 20:31:52,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 9 [2022-11-02 20:31:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:52,924 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2022-11-02 20:31:52,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2022-11-02 20:31:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:31:52,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:52,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:52,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:53,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:53,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 20:31:53,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:53,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33841122] [2022-11-02 20:31:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:53,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:53,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:53,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:31:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:53,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:31:53,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:53,334 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 20:31:53,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:53,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33841122] [2022-11-02 20:31:53,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33841122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:53,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:53,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237687641] [2022-11-02 20:31:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:53,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:53,347 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:53,410 INFO L93 Difference]: Finished difference Result 117 states and 163 transitions. [2022-11-02 20:31:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:31:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:31:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:53,413 INFO L225 Difference]: With dead ends: 117 [2022-11-02 20:31:53,413 INFO L226 Difference]: Without dead ends: 88 [2022-11-02 20:31:53,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 20:31:53,415 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 110 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:53,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 154 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-02 20:31:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 35. [2022-11-02 20:31:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-11-02 20:31:53,424 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 9 [2022-11-02 20:31:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:53,425 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-11-02 20:31:53,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2022-11-02 20:31:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:31:53,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:53,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:31:53,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:53,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:53,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 20:31:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:53,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378795647] [2022-11-02 20:31:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:53,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:53,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:31:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:53,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:31:53,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:53,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:53,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:53,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378795647] [2022-11-02 20:31:54,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378795647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:54,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:54,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:31:54,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696432568] [2022-11-02 20:31:54,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:54,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:31:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:31:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:54,009 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:54,160 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2022-11-02 20:31:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:31:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:31:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:54,162 INFO L225 Difference]: With dead ends: 65 [2022-11-02 20:31:54,165 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 20:31:54,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:31:54,168 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 106 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:54,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 152 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:31:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 20:31:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 37. [2022-11-02 20:31:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2022-11-02 20:31:54,185 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 9 [2022-11-02 20:31:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:54,185 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2022-11-02 20:31:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2022-11-02 20:31:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:31:54,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:54,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:54,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:54,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:54,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash 649010465, now seen corresponding path program 1 times [2022-11-02 20:31:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:54,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981687322] [2022-11-02 20:31:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:54,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:54,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:54,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:54,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:31:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:54,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:31:54,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:54,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:54,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981687322] [2022-11-02 20:31:54,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981687322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:54,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:54,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:54,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814211582] [2022-11-02 20:31:54,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:54,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:54,670 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:54,712 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2022-11-02 20:31:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:31:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:54,716 INFO L225 Difference]: With dead ends: 75 [2022-11-02 20:31:54,716 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 20:31:54,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 20:31:54,722 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 65 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:54,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 72 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 20:31:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-11-02 20:31:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-11-02 20:31:54,740 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 36 [2022-11-02 20:31:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:54,740 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-11-02 20:31:54,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:54,741 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-11-02 20:31:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:31:54,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:54,742 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:54,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:54,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:54,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1039933277, now seen corresponding path program 1 times [2022-11-02 20:31:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:54,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136774632] [2022-11-02 20:31:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:54,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:54,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:54,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:54,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:31:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:55,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:31:55,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:55,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:55,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:55,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136774632] [2022-11-02 20:31:55,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136774632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:55,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:55,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:31:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616817653] [2022-11-02 20:31:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:55,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:31:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:31:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:31:55,177 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:55,214 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2022-11-02 20:31:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:31:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:31:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:55,216 INFO L225 Difference]: With dead ends: 83 [2022-11-02 20:31:55,216 INFO L226 Difference]: Without dead ends: 54 [2022-11-02 20:31:55,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 20:31:55,218 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 55 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:55,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 87 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:31:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-02 20:31:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-11-02 20:31:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-11-02 20:31:55,224 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 36 [2022-11-02 20:31:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:55,225 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-11-02 20:31:55,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-11-02 20:31:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:31:55,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:55,227 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:55,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:55,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:55,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:55,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash -338868699, now seen corresponding path program 1 times [2022-11-02 20:31:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:55,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108903013] [2022-11-02 20:31:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:55,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:55,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:55,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:55,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:31:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:55,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:31:55,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:55,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:31:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:56,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108903013] [2022-11-02 20:31:56,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108903013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:31:56,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:31:56,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:31:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366630399] [2022-11-02 20:31:56,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:31:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:31:56,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:31:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:31:56,039 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:56,515 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2022-11-02 20:31:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:31:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:31:56,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:56,517 INFO L225 Difference]: With dead ends: 157 [2022-11-02 20:31:56,517 INFO L226 Difference]: Without dead ends: 128 [2022-11-02 20:31:56,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:31:56,518 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 285 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:56,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 328 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:31:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-02 20:31:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 44. [2022-11-02 20:31:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-02 20:31:56,531 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2022-11-02 20:31:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:56,532 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-02 20:31:56,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-02 20:31:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:31:56,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:56,534 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:56,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:56,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:56,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash -281610397, now seen corresponding path program 1 times [2022-11-02 20:31:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:56,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182478250] [2022-11-02 20:31:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:56,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:56,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:56,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:56,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:31:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:56,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:31:56,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:57,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:31:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:57,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:57,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182478250] [2022-11-02 20:31:57,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182478250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:31:57,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:31:57,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:31:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440360957] [2022-11-02 20:31:57,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:31:57,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:31:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:31:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:31:57,263 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:57,769 INFO L93 Difference]: Finished difference Result 166 states and 215 transitions. [2022-11-02 20:31:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:31:57,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:31:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:57,774 INFO L225 Difference]: With dead ends: 166 [2022-11-02 20:31:57,776 INFO L226 Difference]: Without dead ends: 130 [2022-11-02 20:31:57,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:31:57,779 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 374 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:57,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 306 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:31:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-02 20:31:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 46. [2022-11-02 20:31:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-11-02 20:31:57,804 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 36 [2022-11-02 20:31:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:57,804 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-11-02 20:31:57,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-11-02 20:31:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:31:57,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:57,810 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:57,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:31:58,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:58,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash -281550815, now seen corresponding path program 1 times [2022-11-02 20:31:58,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:58,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817988763] [2022-11-02 20:31:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:58,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:58,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:58,014 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:58,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:31:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:58,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:31:58,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:31:58,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:31:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:31:59,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:59,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817988763] [2022-11-02 20:31:59,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817988763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:31:59,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:31:59,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:31:59,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502171326] [2022-11-02 20:31:59,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:31:59,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:31:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:59,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:31:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:31:59,050 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:31:59,541 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2022-11-02 20:31:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:31:59,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2022-11-02 20:31:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:31:59,544 INFO L225 Difference]: With dead ends: 136 [2022-11-02 20:31:59,544 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:31:59,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:31:59,546 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 89 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:31:59,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 376 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 77 Unchecked, 0.1s Time] [2022-11-02 20:31:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:31:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 44. [2022-11-02 20:31:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2022-11-02 20:31:59,555 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 36 [2022-11-02 20:31:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:31:59,556 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2022-11-02 20:31:59,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2022-11-02 20:31:59,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:31:59,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:31:59,557 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:31:59,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:31:59,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:31:59,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:31:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -925674713, now seen corresponding path program 1 times [2022-11-02 20:31:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:31:59,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279239312] [2022-11-02 20:31:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:59,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:31:59,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:31:59,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:31:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:31:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:59,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:31:59,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:31:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:31:59,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:31:59,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:31:59,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279239312] [2022-11-02 20:31:59,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279239312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:59,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:59,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:31:59,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408926179] [2022-11-02 20:31:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:59,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:31:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:31:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:31:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:31:59,998 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:00,092 INFO L93 Difference]: Finished difference Result 134 states and 172 transitions. [2022-11-02 20:32:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:32:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:32:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:00,102 INFO L225 Difference]: With dead ends: 134 [2022-11-02 20:32:00,102 INFO L226 Difference]: Without dead ends: 92 [2022-11-02 20:32:00,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:00,104 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 80 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 158 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 20:32:00,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 158 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-02 20:32:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 66. [2022-11-02 20:32:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2022-11-02 20:32:00,112 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 36 [2022-11-02 20:32:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:00,112 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2022-11-02 20:32:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2022-11-02 20:32:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:32:00,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:00,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:00,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:00,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -773460877, now seen corresponding path program 1 times [2022-11-02 20:32:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:00,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441699458] [2022-11-02 20:32:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:00,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:00,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:00,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:32:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:00,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:32:00,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:00,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:32:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:00,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:00,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441699458] [2022-11-02 20:32:00,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441699458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:32:00,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:32:00,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:32:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968237837] [2022-11-02 20:32:00,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:32:00,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:32:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:32:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:32:00,945 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:01,166 INFO L93 Difference]: Finished difference Result 146 states and 183 transitions. [2022-11-02 20:32:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:32:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 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 63 [2022-11-02 20:32:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:01,168 INFO L225 Difference]: With dead ends: 146 [2022-11-02 20:32:01,168 INFO L226 Difference]: Without dead ends: 104 [2022-11-02 20:32:01,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:32:01,169 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 193 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:01,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 203 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-02 20:32:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2022-11-02 20:32:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2022-11-02 20:32:01,184 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 63 [2022-11-02 20:32:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:01,185 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2022-11-02 20:32:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2022-11-02 20:32:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:32:01,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:01,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:32:01,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:01,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1933158517, now seen corresponding path program 1 times [2022-11-02 20:32:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160022051] [2022-11-02 20:32:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:01,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:01,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:01,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:32:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:01,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:32:01,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:01,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:32:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:32:01,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:01,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160022051] [2022-11-02 20:32:01,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160022051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:32:01,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:32:01,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:32:01,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75470561] [2022-11-02 20:32:01,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:32:01,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:32:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:32:01,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:32:01,986 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:02,206 INFO L93 Difference]: Finished difference Result 149 states and 184 transitions. [2022-11-02 20:32:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:32:02,207 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 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 63 [2022-11-02 20:32:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:02,208 INFO L225 Difference]: With dead ends: 149 [2022-11-02 20:32:02,208 INFO L226 Difference]: Without dead ends: 107 [2022-11-02 20:32:02,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:32:02,209 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 133 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:02,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 224 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:32:02,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-02 20:32:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 70. [2022-11-02 20:32:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 69 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2022-11-02 20:32:02,232 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 63 [2022-11-02 20:32:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:02,232 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2022-11-02 20:32:02,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2022-11-02 20:32:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:32:02,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:02,234 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:32:02,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:02,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:02,449 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1681750409, now seen corresponding path program 1 times [2022-11-02 20:32:02,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:02,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31671807] [2022-11-02 20:32:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:02,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:02,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:02,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:02,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:32:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:02,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 20:32:02,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:32:03,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:32:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:32:06,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:06,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31671807] [2022-11-02 20:32:06,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31671807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:32:06,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:32:06,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 38 [2022-11-02 20:32:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888361863] [2022-11-02 20:32:06,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:32:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:32:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:32:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:32:06,274 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:28,319 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2022-11-02 20:32:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-11-02 20:32:28,319 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 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 63 [2022-11-02 20:32:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:28,321 INFO L225 Difference]: With dead ends: 538 [2022-11-02 20:32:28,321 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:32:28,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14855 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=5444, Invalid=39712, Unknown=0, NotChecked=0, Total=45156 [2022-11-02 20:32:28,336 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 747 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1101 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:28,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1987 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1047 Invalid, 0 Unknown, 1101 Unchecked, 1.4s Time] [2022-11-02 20:32:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:32:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 70. [2022-11-02 20:32:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 69 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2022-11-02 20:32:28,347 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 63 [2022-11-02 20:32:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:28,347 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2022-11-02 20:32:28,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6315789473684212) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2022-11-02 20:32:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:32:28,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:28,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-02 20:32:28,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:28,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:28,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1681690827, now seen corresponding path program 1 times [2022-11-02 20:32:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:28,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155698657] [2022-11-02 20:32:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:28,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:28,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:28,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:28,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:32:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:28,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:32:28,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:32:28,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:32:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:32:29,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:29,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155698657] [2022-11-02 20:32:29,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155698657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:32:29,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:32:29,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:32:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548983030] [2022-11-02 20:32:29,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:32:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:32:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:29,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:32:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:32:29,234 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:29,914 INFO L93 Difference]: Finished difference Result 274 states and 327 transitions. [2022-11-02 20:32:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:32:29,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 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 63 [2022-11-02 20:32:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:29,916 INFO L225 Difference]: With dead ends: 274 [2022-11-02 20:32:29,916 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 20:32:29,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:32:29,917 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 442 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:29,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 747 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:32:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 20:32:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 83. [2022-11-02 20:32:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2317073170731707) internal successors, (101), 82 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2022-11-02 20:32:29,950 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 63 [2022-11-02 20:32:29,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:29,951 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2022-11-02 20:32:29,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2022-11-02 20:32:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:32:29,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:29,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-02 20:32:29,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:32:30,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:30,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1624492107, now seen corresponding path program 1 times [2022-11-02 20:32:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:30,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17485144] [2022-11-02 20:32:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:30,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:30,167 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:30,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:32:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:32:30,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:32:30,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:32:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:32:30,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:30,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17485144] [2022-11-02 20:32:30,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17485144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:32:30,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:32:30,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 20:32:30,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279716594] [2022-11-02 20:32:30,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:32:30,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:32:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:30,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:32:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:32:30,833 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:31,542 INFO L93 Difference]: Finished difference Result 261 states and 310 transitions. [2022-11-02 20:32:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:32:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 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 63 [2022-11-02 20:32:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:31,544 INFO L225 Difference]: With dead ends: 261 [2022-11-02 20:32:31,544 INFO L226 Difference]: Without dead ends: 206 [2022-11-02 20:32:31,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:32:31,546 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 364 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:31,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 693 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:32:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-02 20:32:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 81. [2022-11-02 20:32:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.225) internal successors, (98), 80 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2022-11-02 20:32:31,556 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 63 [2022-11-02 20:32:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:31,557 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2022-11-02 20:32:31,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2022-11-02 20:32:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:32:31,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:32:31,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:32:31,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:32:31,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:31,770 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:32:31,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash -401827149, now seen corresponding path program 1 times [2022-11-02 20:32:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:32:31,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125732977] [2022-11-02 20:32:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:31,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:32:31,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:32:31,772 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:32:31,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:32:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:31,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:32:31,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:32:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:32:31,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:32:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:32:32,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:32:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125732977] [2022-11-02 20:32:32,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125732977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:32:32,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:32:32,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2022-11-02 20:32:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311978440] [2022-11-02 20:32:32,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:32:32,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:32:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:32:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:32:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:32:32,056 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:32:32,080 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2022-11-02 20:32:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:32:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 63 [2022-11-02 20:32:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:32:32,081 INFO L225 Difference]: With dead ends: 123 [2022-11-02 20:32:32,081 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:32:32,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 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 20:32:32,082 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:32:32,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 75 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:32:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:32:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:32:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:32:32,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-11-02 20:32:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:32:32,084 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:32:32,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:32:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:32:32,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:32:32,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:32:32,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-02 20:32:32,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:32:32,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 20:32:51,981 WARN L234 SmtUtils]: Spent 19.68s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-02 20:32:53,128 INFO L899 garLoopResultBuilder]: For program point L151(line 151) no Hoare annotation was computed. [2022-11-02 20:32:53,128 INFO L899 garLoopResultBuilder]: For program point L151-2(line 151) no Hoare annotation was computed. [2022-11-02 20:32:53,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 20:32:53,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 20:32:53,128 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L136-2(line 136) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L128-2(line 128) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L120-2(line 120) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2022-11-02 20:32:53,129 INFO L899 garLoopResultBuilder]: For program point L145-2(line 145) no Hoare annotation was computed. [2022-11-02 20:32:53,130 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2022-11-02 20:32:53,130 INFO L899 garLoopResultBuilder]: For program point L113-2(line 113) no Hoare annotation was computed. [2022-11-02 20:32:53,130 INFO L895 garLoopResultBuilder]: At program point L163(lines 22 164) the Hoare annotation is: false [2022-11-02 20:32:53,130 INFO L899 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2022-11-02 20:32:53,130 INFO L899 garLoopResultBuilder]: For program point L155-2(line 155) no Hoare annotation was computed. [2022-11-02 20:32:53,130 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 20:32:53,130 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-02 20:32:53,131 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 162) the Hoare annotation is: (let ((.cse2 (= (_ bv0 8) |ULTIMATE.start_main_~state_11~0#1|)) (.cse5 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse8 (= |ULTIMATE.start_main_~var_58_arg_0~0#1| (_ bv0 8))) (.cse9 (= (_ bv0 8) |ULTIMATE.start_main_~var_56_arg_1~0#1|)) (.cse12 (= |ULTIMATE.start_main_~var_10~0#1| (_ bv0 8))) (.cse16 (= |ULTIMATE.start_main_~var_52_arg_0~0#1| (_ bv0 8))) (.cse6 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse4 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_53_arg_2~0#1|))))))) .cse6))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_44~0#1|))))))))) .cse6))))) (.cse7 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) (.cse0 (let ((.cse17 (= (_ bv0 8) |ULTIMATE.start_main_~state_17~0#1|))) (or (and .cse5 .cse12 .cse17 .cse2) (and .cse5 .cse8 .cse9 .cse12 .cse17 .cse16 (= |ULTIMATE.start_main_~next_57_arg_1~0#1| (_ bv0 8)))))) (.cse10 (= |ULTIMATE.start_main_~var_40_arg_1~0#1| (_ bv1 8))) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_39~0#1|)) (.cse11 (= (_ bv1 8) |ULTIMATE.start_main_~state_11~0#1|)) (.cse13 (= (_ bv1 8) |ULTIMATE.start_main_~var_55_arg_2~0#1|)) (.cse14 (= |ULTIMATE.start_main_~var_55_arg_0~0#1| (_ bv0 8))) (.cse15 (= (_ bv1 8) |ULTIMATE.start_main_~next_51_arg_1~0#1|)) (.cse3 (= (_ bv1 8) |ULTIMATE.start_main_~var_29~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~state_21~0#1|))))) .cse6))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~state_15~0#1|))))) .cse6)))) .cse7 .cse8 .cse9 .cse10 .cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_56_arg_2~0#1|) (= |ULTIMATE.start_main_~var_59_arg_0~0#1| (_ bv0 8)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_59_arg_2~0#1|))))))) .cse6))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~next_54_arg_1~0#1|))))) .cse6)))) (= (_ bv1 8) |ULTIMATE.start_main_~state_17~0#1|) .cse3 (= |ULTIMATE.start_main_~var_46~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~next_57_arg_1~0#1|) (= |ULTIMATE.start_main_~var_53_arg_0~0#1| (_ bv0 8))) (and .cse4 .cse7 .cse0 .cse10 .cse1 .cse11 .cse13 .cse14 .cse15 .cse3)))) [2022-11-02 20:32:53,131 INFO L899 garLoopResultBuilder]: For program point L57-3(lines 57 162) no Hoare annotation was computed. [2022-11-02 20:32:53,131 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-11-02 20:32:53,132 INFO L899 garLoopResultBuilder]: For program point L82-2(line 82) no Hoare annotation was computed. [2022-11-02 20:32:53,132 INFO L899 garLoopResultBuilder]: For program point L132(line 132) no Hoare annotation was computed. [2022-11-02 20:32:53,132 INFO L899 garLoopResultBuilder]: For program point L132-2(line 132) no Hoare annotation was computed. [2022-11-02 20:32:53,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 20:32:53,132 INFO L899 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2022-11-02 20:32:53,133 INFO L899 garLoopResultBuilder]: For program point L124-2(line 124) no Hoare annotation was computed. [2022-11-02 20:32:53,133 INFO L899 garLoopResultBuilder]: For program point L141(line 141) no Hoare annotation was computed. [2022-11-02 20:32:53,133 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2022-11-02 20:32:53,133 INFO L899 garLoopResultBuilder]: For program point L141-2(line 141) no Hoare annotation was computed. [2022-11-02 20:32:53,133 INFO L899 garLoopResultBuilder]: For program point L75-2(line 75) no Hoare annotation was computed. [2022-11-02 20:32:53,136 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:32:53,139 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:32:53,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:32:53 BoogieIcfgContainer [2022-11-02 20:32:53,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:32:53,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:32:53,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:32:53,160 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:32:53,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:52" (3/4) ... [2022-11-02 20:32:53,164 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:32:53,178 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 20:32:53,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-02 20:32:53,179 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:32:53,221 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 20:32:53,223 INFO L158 Benchmark]: Toolchain (without parser) took 62234.03ms. Allocated memory was 60.8MB in the beginning and 364.9MB in the end (delta: 304.1MB). Free memory was 38.9MB in the beginning and 242.8MB in the end (delta: -204.0MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,224 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 60.8MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:32:53,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.13ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 41.3MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.81ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 39.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,225 INFO L158 Benchmark]: Boogie Preprocessor took 69.79ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 37.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,225 INFO L158 Benchmark]: RCFGBuilder took 684.45ms. Allocated memory is still 60.8MB. Free memory was 37.3MB in the beginning and 37.0MB in the end (delta: 358.6kB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,226 INFO L158 Benchmark]: TraceAbstraction took 60941.99ms. Allocated memory was 60.8MB in the beginning and 364.9MB in the end (delta: 304.1MB). Free memory was 36.1MB in the beginning and 246.0MB in the end (delta: -209.9MB). Peak memory consumption was 226.0MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,226 INFO L158 Benchmark]: Witness Printer took 63.29ms. Allocated memory is still 364.9MB. Free memory was 246.0MB in the beginning and 242.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:53,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 60.8MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.13ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 41.3MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.81ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 39.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.79ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 37.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.45ms. Allocated memory is still 60.8MB. Free memory was 37.3MB in the beginning and 37.0MB in the end (delta: 358.6kB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 60941.99ms. Allocated memory was 60.8MB in the beginning and 364.9MB in the end (delta: 304.1MB). Free memory was 36.1MB in the beginning and 246.0MB in the end (delta: -209.9MB). Peak memory consumption was 226.0MB. Max. memory is 16.1GB. * Witness Printer took 63.29ms. Allocated memory is still 364.9MB. Free memory was 246.0MB in the beginning and 242.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.8s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3201 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3201 mSDsluCounter, 5717 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1178 IncrementalHoareTripleChecker+Unchecked, 4825 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2247 IncrementalHoareTripleChecker+Invalid, 3610 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 892 mSDtfsCounter, 2247 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1368 GetRequests, 953 SyntacticMatches, 7 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15506 ImplicationChecksByTransitivity, 26.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=13, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 1259 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 275 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 19.7s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3606178 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1083 ConstructedInterpolants, 92 QuantifiedInterpolants, 8259 SizeOfPredicates, 133 NumberOfNonLiveVariables, 3006 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 332/522 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((1bv8 == mask_SORT_1 && var_10 == 0bv8) && 0bv8 == state_17) && 0bv8 == state_11) || ((((((1bv8 == mask_SORT_1 && var_58_arg_0 == 0bv8) && 0bv8 == var_56_arg_1) && var_10 == 0bv8) && 0bv8 == state_17) && var_52_arg_0 == 0bv8) && next_57_arg_1 == 0bv8)) && 1bv8 == var_39) && 0bv8 == state_11) && 1bv8 == var_29) || (((((((((((((((((((((~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_53_arg_2)[7:0])[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_44)[7:0])[7:0])[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) && 1bv8 == mask_SORT_1) && ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(state_21)[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(state_15)[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0])) && !(cond == 0bv32)) && var_58_arg_0 == 0bv8) && 0bv8 == var_56_arg_1) && var_40_arg_1 == 1bv8) && 1bv8 == var_39) && 1bv8 == var_56_arg_2) && var_59_arg_0 == 0bv8) && 1bv8 == state_11) && var_10 == 0bv8) && 1bv8 == var_55_arg_2) && var_55_arg_0 == 0bv8) && 1bv8 == next_51_arg_1) && var_52_arg_0 == 0bv8) && ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_59_arg_2)[7:0])[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(next_54_arg_1)[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0])) && 1bv8 == state_17) && 1bv8 == var_29) && var_46 == 0bv8) && 1bv8 == next_57_arg_1) && var_53_arg_0 == 0bv8)) || (((((((((~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_53_arg_2)[7:0])[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) == ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_44)[7:0])[7:0])[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) && !(cond == 0bv32)) && ((((1bv8 == mask_SORT_1 && var_10 == 0bv8) && 0bv8 == state_17) && 0bv8 == state_11) || ((((((1bv8 == mask_SORT_1 && var_58_arg_0 == 0bv8) && 0bv8 == var_56_arg_1) && var_10 == 0bv8) && 0bv8 == state_17) && var_52_arg_0 == 0bv8) && next_57_arg_1 == 0bv8))) && var_40_arg_1 == 1bv8) && 1bv8 == var_39) && 1bv8 == state_11) && 1bv8 == var_55_arg_2) && var_55_arg_0 == 0bv8) && 1bv8 == next_51_arg_1) && 1bv8 == var_29) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 20:32:53,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a2deee5-e6ca-4083-9bff-77c8b809e505/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null