./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro --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 ccf23a42310b5077f35c2c72ddcb89ed6f64312148ee11126a6f676e5b6a8892 --- 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-8393723 [2022-11-18 19:33:02,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:02,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:02,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:02,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:02,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:02,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:02,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:02,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:02,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:02,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:02,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:02,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:02,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:02,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:02,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:02,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:02,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:02,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:02,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:02,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:02,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:02,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:02,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:02,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:02,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:02,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:02,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:02,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:02,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:02,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:02,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:02,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:02,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:02,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:02,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:02,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:02,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:02,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:02,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:02,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:02,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 19:33:02,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:02,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:02,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:02,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:02,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:02,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:02,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:02,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:02,570 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:02,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:02,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:02,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:02,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:02,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:02,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:02,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:02,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:02,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:02,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:02,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:02,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:02,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:02,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:02,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:02,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:02,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:02,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:02,578 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:02,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:02,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:02,579 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_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccf23a42310b5077f35c2c72ddcb89ed6f64312148ee11126a6f676e5b6a8892 [2022-11-18 19:33:02,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:33:03,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:33:03,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:33:03,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:33:03,025 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:33:03,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c [2022-11-18 19:33:03,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/044d33ea5/c2cb7a0b91a344278eedeb055981f207/FLAG2d8f422c7 [2022-11-18 19:33:04,018 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:33:04,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c [2022-11-18 19:33:04,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/044d33ea5/c2cb7a0b91a344278eedeb055981f207/FLAG2d8f422c7 [2022-11-18 19:33:04,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/044d33ea5/c2cb7a0b91a344278eedeb055981f207 [2022-11-18 19:33:04,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:33:04,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:33:04,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:04,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:33:04,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:33:04,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:04" (1/1) ... [2022-11-18 19:33:04,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f978686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:04, skipping insertion in model container [2022-11-18 19:33:04,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:04" (1/1) ... [2022-11-18 19:33:04,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:33:04,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:33:04,983 WARN L234 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_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c[1014,1027] [2022-11-18 19:33:05,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:05,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:33:05,645 WARN L234 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_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c[1014,1027] [2022-11-18 19:33:05,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:05,982 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:33:05,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05 WrapperNode [2022-11-18 19:33:05,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:05,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:05,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:33:05,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:33:05,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,339 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5261 [2022-11-18 19:33:06,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:06,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:33:06,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:33:06,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:33:06,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,683 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:33:06,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:33:06,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:33:06,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:33:06,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (1/1) ... [2022-11-18 19:33:06,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:06,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:33:07,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:33:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:33:07,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:33:08,031 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:33:08,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:33:14,882 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:33:14,901 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:33:14,901 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:33:14,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:14 BoogieIcfgContainer [2022-11-18 19:33:14,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:33:14,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:33:14,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:33:14,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:33:14,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:04" (1/3) ... [2022-11-18 19:33:14,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a9be0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:14, skipping insertion in model container [2022-11-18 19:33:14,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:05" (2/3) ... [2022-11-18 19:33:14,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a9be0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:14, skipping insertion in model container [2022-11-18 19:33:14,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:14" (3/3) ... [2022-11-18 19:33:14,917 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.brp2.5.prop2-back-serstep.c [2022-11-18 19:33:14,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:33:14,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:33:15,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:33:15,097 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;@43708991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:33:15,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:33:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 897 states have (on average 1.6644370122630991) internal successors, (1493), 898 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-18 19:33:15,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:15,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:15,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1976997793, now seen corresponding path program 1 times [2022-11-18 19:33:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:15,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709429034] [2022-11-18 19:33:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:15,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:17,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709429034] [2022-11-18 19:33:17,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709429034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:17,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:17,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:33:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455379338] [2022-11-18 19:33:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:17,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:17,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:17,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:17,137 INFO L87 Difference]: Start difference. First operand has 899 states, 897 states have (on average 1.6644370122630991) internal successors, (1493), 898 states have internal predecessors, (1493), 0 states have call successors, (0), 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 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:18,713 INFO L93 Difference]: Finished difference Result 2947 states and 4907 transitions. [2022-11-18 19:33:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:18,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2022-11-18 19:33:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:18,775 INFO L225 Difference]: With dead ends: 2947 [2022-11-18 19:33:18,781 INFO L226 Difference]: Without dead ends: 2050 [2022-11-18 19:33:18,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:18,796 INFO L413 NwaCegarLoop]: 1925 mSDtfsCounter, 4437 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:18,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 4283 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:33:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-11-18 19:33:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 897. [2022-11-18 19:33:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.6618303571428572) internal successors, (1489), 896 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1489 transitions. [2022-11-18 19:33:18,962 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1489 transitions. Word has length 181 [2022-11-18 19:33:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:18,974 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1489 transitions. [2022-11-18 19:33:18,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1489 transitions. [2022-11-18 19:33:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 19:33:18,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:18,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:18,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:18,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:18,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1159115443, now seen corresponding path program 1 times [2022-11-18 19:33:18,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:18,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330712582] [2022-11-18 19:33:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:18,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:20,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330712582] [2022-11-18 19:33:20,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330712582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:20,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:20,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:33:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579095188] [2022-11-18 19:33:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:20,814 INFO L87 Difference]: Start difference. First operand 897 states and 1489 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:22,335 INFO L93 Difference]: Finished difference Result 3569 states and 5934 transitions. [2022-11-18 19:33:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-11-18 19:33:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:22,350 INFO L225 Difference]: With dead ends: 3569 [2022-11-18 19:33:22,350 INFO L226 Difference]: Without dead ends: 2674 [2022-11-18 19:33:22,353 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 [2022-11-18 19:33:22,354 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 3826 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:22,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 4881 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:33:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-11-18 19:33:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1160. [2022-11-18 19:33:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1159 states have (on average 1.6617773943054357) internal successors, (1926), 1159 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1926 transitions. [2022-11-18 19:33:22,395 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1926 transitions. Word has length 182 [2022-11-18 19:33:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:22,396 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1926 transitions. [2022-11-18 19:33:22,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1926 transitions. [2022-11-18 19:33:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2022-11-18 19:33:22,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:22,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:33:22,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2042033025, now seen corresponding path program 1 times [2022-11-18 19:33:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:22,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853628524] [2022-11-18 19:33:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:22,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:22,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451348161] [2022-11-18 19:33:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:22,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:22,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:23,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:33:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:25,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 6543 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:33:25,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:27,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853628524] [2022-11-18 19:33:27,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:27,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451348161] [2022-11-18 19:33:27,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451348161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:27,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:27,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912094324] [2022-11-18 19:33:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:27,229 INFO L87 Difference]: Start difference. First operand 1160 states and 1926 transitions. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:28,475 INFO L93 Difference]: Finished difference Result 2948 states and 4896 transitions. [2022-11-18 19:33:28,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:28,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 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 777 [2022-11-18 19:33:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:28,485 INFO L225 Difference]: With dead ends: 2948 [2022-11-18 19:33:28,485 INFO L226 Difference]: Without dead ends: 2053 [2022-11-18 19:33:28,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:28,489 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 2785 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 4830 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:28,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2785 Valid, 4830 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:33:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-11-18 19:33:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1163. [2022-11-18 19:33:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.6600688468158347) internal successors, (1929), 1162 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1929 transitions. [2022-11-18 19:33:28,530 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1929 transitions. Word has length 777 [2022-11-18 19:33:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:28,531 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1929 transitions. [2022-11-18 19:33:28,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1929 transitions. [2022-11-18 19:33:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2022-11-18 19:33:28,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:28,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:28,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:28,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:28,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1899666485, now seen corresponding path program 1 times [2022-11-18 19:33:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:28,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001310087] [2022-11-18 19:33:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:29,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:29,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737283637] [2022-11-18 19:33:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:29,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:29,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:29,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:29,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:33:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:32,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 6546 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:33:32,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:32,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:32,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001310087] [2022-11-18 19:33:32,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:32,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737283637] [2022-11-18 19:33:32,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737283637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:32,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:32,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:33:32,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769725745] [2022-11-18 19:33:32,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:32,734 INFO L87 Difference]: Start difference. First operand 1163 states and 1929 transitions. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:33,950 INFO L93 Difference]: Finished difference Result 3854 states and 6392 transitions. [2022-11-18 19:33:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:33,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 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 778 [2022-11-18 19:33:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:33,964 INFO L225 Difference]: With dead ends: 3854 [2022-11-18 19:33:33,964 INFO L226 Difference]: Without dead ends: 2956 [2022-11-18 19:33:33,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:33,970 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 7215 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7215 SdHoareTripleChecker+Valid, 4859 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:33,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7215 Valid, 4859 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:33:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-11-18 19:33:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1165. [2022-11-18 19:33:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.6589347079037802) internal successors, (1931), 1164 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1931 transitions. [2022-11-18 19:33:34,027 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1931 transitions. Word has length 778 [2022-11-18 19:33:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:34,029 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1931 transitions. [2022-11-18 19:33:34,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1931 transitions. [2022-11-18 19:33:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2022-11-18 19:33:34,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:34,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:34,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:34,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:34,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 246455109, now seen corresponding path program 1 times [2022-11-18 19:33:34,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:34,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846528809] [2022-11-18 19:33:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:34,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894423822] [2022-11-18 19:33:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:34,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:34,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:34,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:33:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:37,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 6549 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:33:37,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:38,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846528809] [2022-11-18 19:33:38,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:38,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894423822] [2022-11-18 19:33:38,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894423822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:38,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:38,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418097031] [2022-11-18 19:33:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:38,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:38,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:38,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:38,957 INFO L87 Difference]: Start difference. First operand 1165 states and 1931 transitions. Second operand has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:39,942 INFO L93 Difference]: Finished difference Result 2959 states and 4906 transitions. [2022-11-18 19:33:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 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 779 [2022-11-18 19:33:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:39,954 INFO L225 Difference]: With dead ends: 2959 [2022-11-18 19:33:39,954 INFO L226 Difference]: Without dead ends: 2059 [2022-11-18 19:33:39,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:39,958 INFO L413 NwaCegarLoop]: 1772 mSDtfsCounter, 2773 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:39,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2773 Valid, 4860 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:33:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-11-18 19:33:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1166. [2022-11-18 19:33:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 1.6583690987124464) internal successors, (1932), 1165 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1932 transitions. [2022-11-18 19:33:40,007 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1932 transitions. Word has length 779 [2022-11-18 19:33:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:40,008 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1932 transitions. [2022-11-18 19:33:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1932 transitions. [2022-11-18 19:33:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2022-11-18 19:33:40,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:40,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:40,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:40,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 668894467, now seen corresponding path program 1 times [2022-11-18 19:33:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:40,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334471752] [2022-11-18 19:33:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:40,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:40,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293827527] [2022-11-18 19:33:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:40,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:40,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:40,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:40,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:33:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:43,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 6549 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:33:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:44,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334471752] [2022-11-18 19:33:44,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293827527] [2022-11-18 19:33:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293827527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:44,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:44,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:33:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168952910] [2022-11-18 19:33:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:44,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:44,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:44,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:44,327 INFO L87 Difference]: Start difference. First operand 1166 states and 1932 transitions. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:45,882 INFO L93 Difference]: Finished difference Result 3866 states and 6404 transitions. [2022-11-18 19:33:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 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 779 [2022-11-18 19:33:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:45,895 INFO L225 Difference]: With dead ends: 3866 [2022-11-18 19:33:45,896 INFO L226 Difference]: Without dead ends: 2965 [2022-11-18 19:33:45,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:45,903 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 7916 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7916 SdHoareTripleChecker+Valid, 4862 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:45,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7916 Valid, 4862 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:33:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2022-11-18 19:33:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1168. [2022-11-18 19:33:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 1.6572407883461868) internal successors, (1934), 1167 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1934 transitions. [2022-11-18 19:33:45,951 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1934 transitions. Word has length 779 [2022-11-18 19:33:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:45,952 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1934 transitions. [2022-11-18 19:33:45,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1934 transitions. [2022-11-18 19:33:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2022-11-18 19:33:45,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:45,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:45,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:46,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:33:46,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:46,185 INFO L85 PathProgramCache]: Analyzing trace with hash 855721755, now seen corresponding path program 1 times [2022-11-18 19:33:46,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:46,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523309674] [2022-11-18 19:33:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:46,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:46,596 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:46,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508174] [2022-11-18 19:33:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:46,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:46,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:46,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:33:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:49,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 6552 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:33:49,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:50,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:50,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:50,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523309674] [2022-11-18 19:33:50,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:50,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508174] [2022-11-18 19:33:50,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:50,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:50,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:50,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566784036] [2022-11-18 19:33:50,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:33:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:33:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:33:50,897 INFO L87 Difference]: Start difference. First operand 1168 states and 1934 transitions. Second operand has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:52,068 INFO L93 Difference]: Finished difference Result 2968 states and 4915 transitions. [2022-11-18 19:33:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 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 780 [2022-11-18 19:33:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:52,080 INFO L225 Difference]: With dead ends: 2968 [2022-11-18 19:33:52,080 INFO L226 Difference]: Without dead ends: 2065 [2022-11-18 19:33:52,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:52,083 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 3765 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3765 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:52,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3765 Valid, 4864 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:33:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2022-11-18 19:33:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1169. [2022-11-18 19:33:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1168 states have (on average 1.6566780821917808) internal successors, (1935), 1168 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1935 transitions. [2022-11-18 19:33:52,122 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1935 transitions. Word has length 780 [2022-11-18 19:33:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:52,123 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1935 transitions. [2022-11-18 19:33:52,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1935 transitions. [2022-11-18 19:33:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2022-11-18 19:33:52,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:52,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:52,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:52,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:52,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:52,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1739008167, now seen corresponding path program 1 times [2022-11-18 19:33:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042689176] [2022-11-18 19:33:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:52,808 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:52,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332934897] [2022-11-18 19:33:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:52,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:52,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:52,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:33:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:56,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 6552 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:33:56,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:56,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:56,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:56,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042689176] [2022-11-18 19:33:56,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:56,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332934897] [2022-11-18 19:33:56,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332934897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:56,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:56,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:33:56,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346441172] [2022-11-18 19:33:56,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:56,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:56,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:56,795 INFO L87 Difference]: Start difference. First operand 1169 states and 1935 transitions. Second operand has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:57,892 INFO L93 Difference]: Finished difference Result 3878 states and 6416 transitions. [2022-11-18 19:33:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 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 780 [2022-11-18 19:33:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:57,905 INFO L225 Difference]: With dead ends: 3878 [2022-11-18 19:33:57,905 INFO L226 Difference]: Without dead ends: 2974 [2022-11-18 19:33:57,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:57,908 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 7846 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7846 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:57,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7846 Valid, 4909 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:33:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-11-18 19:33:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1171. [2022-11-18 19:33:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.6555555555555554) internal successors, (1937), 1170 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1937 transitions. [2022-11-18 19:33:57,955 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1937 transitions. Word has length 780 [2022-11-18 19:33:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:57,955 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1937 transitions. [2022-11-18 19:33:57,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1937 transitions. [2022-11-18 19:33:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-11-18 19:33:57,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:57,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:58,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:58,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:58,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1628234117, now seen corresponding path program 1 times [2022-11-18 19:33:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:58,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443556162] [2022-11-18 19:33:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:58,568 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:58,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608170961] [2022-11-18 19:33:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:58,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:58,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:58,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:34:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 6555 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:34:01,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:03,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:03,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:03,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443556162] [2022-11-18 19:34:03,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:03,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608170961] [2022-11-18 19:34:03,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608170961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:03,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:03,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:03,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516285581] [2022-11-18 19:34:03,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:03,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:03,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:03,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:34:03,143 INFO L87 Difference]: Start difference. First operand 1171 states and 1937 transitions. Second operand has 5 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:04,114 INFO L93 Difference]: Finished difference Result 2977 states and 4924 transitions. [2022-11-18 19:34:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 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 781 [2022-11-18 19:34:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:04,124 INFO L225 Difference]: With dead ends: 2977 [2022-11-18 19:34:04,125 INFO L226 Difference]: Without dead ends: 2071 [2022-11-18 19:34:04,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:04,128 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 2751 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:04,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2751 Valid, 4910 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:34:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-11-18 19:34:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1172. [2022-11-18 19:34:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.654995730145175) internal successors, (1938), 1171 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1938 transitions. [2022-11-18 19:34:04,176 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1938 transitions. Word has length 781 [2022-11-18 19:34:04,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:04,177 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1938 transitions. [2022-11-18 19:34:04,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1938 transitions. [2022-11-18 19:34:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-11-18 19:34:04,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:04,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:04,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:04,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 19:34:04,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -260254919, now seen corresponding path program 1 times [2022-11-18 19:34:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:04,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685984781] [2022-11-18 19:34:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:04,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764252875] [2022-11-18 19:34:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:04,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:04,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:04,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:34:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 6555 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:34:08,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:08,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:08,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685984781] [2022-11-18 19:34:08,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:08,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764252875] [2022-11-18 19:34:08,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764252875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:08,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:08,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:34:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915120518] [2022-11-18 19:34:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:08,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:08,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:08,933 INFO L87 Difference]: Start difference. First operand 1172 states and 1938 transitions. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:10,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:10,180 INFO L93 Difference]: Finished difference Result 3890 states and 6428 transitions. [2022-11-18 19:34:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:10,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 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 781 [2022-11-18 19:34:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:10,191 INFO L225 Difference]: With dead ends: 3890 [2022-11-18 19:34:10,191 INFO L226 Difference]: Without dead ends: 2983 [2022-11-18 19:34:10,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:10,194 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 5924 mSDsluCounter, 3950 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:10,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 6584 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:34:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2022-11-18 19:34:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1174. [2022-11-18 19:34:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 1.6538789428815004) internal successors, (1940), 1173 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1940 transitions. [2022-11-18 19:34:10,243 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1940 transitions. Word has length 781 [2022-11-18 19:34:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:10,244 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1940 transitions. [2022-11-18 19:34:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1940 transitions. [2022-11-18 19:34:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-11-18 19:34:10,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:10,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:10,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:10,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:34:10,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1931215055, now seen corresponding path program 1 times [2022-11-18 19:34:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:10,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618657534] [2022-11-18 19:34:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:10,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:10,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572862362] [2022-11-18 19:34:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:10,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:10,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:10,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:10,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:34:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:14,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 6558 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-18 19:34:14,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:20,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-18 19:34:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618657534] [2022-11-18 19:34:26,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572862362] [2022-11-18 19:34:26,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572862362] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:26,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:26,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-18 19:34:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153950298] [2022-11-18 19:34:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:26,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:26,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:26,533 INFO L87 Difference]: Start difference. First operand 1174 states and 1940 transitions. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:35,369 INFO L93 Difference]: Finished difference Result 6122 states and 9969 transitions. [2022-11-18 19:34:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:34:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 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 782 [2022-11-18 19:34:35,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:35,384 INFO L225 Difference]: With dead ends: 6122 [2022-11-18 19:34:35,385 INFO L226 Difference]: Without dead ends: 5213 [2022-11-18 19:34:35,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1554 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:34:35,389 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 7041 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 5340 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7041 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 5789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 5340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:35,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7041 Valid, 4373 Invalid, 5789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [449 Valid, 5340 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-18 19:34:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2022-11-18 19:34:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 1177. [2022-11-18 19:34:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.653061224489796) internal successors, (1944), 1176 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1944 transitions. [2022-11-18 19:34:35,444 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1944 transitions. Word has length 782 [2022-11-18 19:34:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:35,446 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1944 transitions. [2022-11-18 19:34:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1944 transitions. [2022-11-18 19:34:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-11-18 19:34:35,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:35,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:35,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:34:35,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:35,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1931274637, now seen corresponding path program 1 times [2022-11-18 19:34:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:35,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546915905] [2022-11-18 19:34:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:36,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:36,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730294295] [2022-11-18 19:34:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:36,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:36,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:36,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:34:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:40,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 6558 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-18 19:34:40,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:43,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-18 19:34:48,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:48,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546915905] [2022-11-18 19:34:48,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:48,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730294295] [2022-11-18 19:34:48,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730294295] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:48,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:48,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-11-18 19:34:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123554575] [2022-11-18 19:34:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:48,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:34:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:34:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:48,610 INFO L87 Difference]: Start difference. First operand 1177 states and 1944 transitions. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:50,135 INFO L93 Difference]: Finished difference Result 3892 states and 6430 transitions. [2022-11-18 19:34:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 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 782 [2022-11-18 19:34:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:50,145 INFO L225 Difference]: With dead ends: 3892 [2022-11-18 19:34:50,145 INFO L226 Difference]: Without dead ends: 2980 [2022-11-18 19:34:50,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1556 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:50,149 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 4427 mSDsluCounter, 3389 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4427 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:50,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4427 Valid, 5308 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:34:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2022-11-18 19:34:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1174. [2022-11-18 19:34:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 1.6538789428815004) internal successors, (1940), 1173 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1940 transitions. [2022-11-18 19:34:50,197 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1940 transitions. Word has length 782 [2022-11-18 19:34:50,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:50,199 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1940 transitions. [2022-11-18 19:34:50,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1940 transitions. [2022-11-18 19:34:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2022-11-18 19:34:50,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:50,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:50,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:50,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:34:50,427 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:50,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash -472306849, now seen corresponding path program 1 times [2022-11-18 19:34:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:50,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877501988] [2022-11-18 19:34:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:50,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:50,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752829569] [2022-11-18 19:34:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:50,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:50,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:50,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:34:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:54,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 6561 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-18 19:34:54,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:59,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:11,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:11,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877501988] [2022-11-18 19:35:11,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:11,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752829569] [2022-11-18 19:35:11,811 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 19:35:11,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:12,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:12,013 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) 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) [2022-11-18 19:35:12,018 INFO L158 Benchmark]: Toolchain (without parser) took 127430.99ms. Allocated memory was 111.1MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 68.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 989.7MB. Max. memory is 16.1GB. [2022-11-18 19:35:12,019 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 111.1MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:35:12,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1394.41ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 68.2MB in the beginning and 81.4MB in the end (delta: -13.2MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-11-18 19:35:12,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 353.09ms. Allocated memory is still 153.1MB. Free memory was 81.4MB in the beginning and 66.5MB in the end (delta: 14.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-11-18 19:35:12,020 INFO L158 Benchmark]: Boogie Preprocessor took 514.00ms. Allocated memory is still 153.1MB. Free memory was 66.5MB in the beginning and 68.0MB in the end (delta: -1.4MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-11-18 19:35:12,020 INFO L158 Benchmark]: RCFGBuilder took 8033.67ms. Allocated memory was 153.1MB in the beginning and 541.1MB in the end (delta: 388.0MB). Free memory was 67.5MB in the beginning and 409.3MB in the end (delta: -341.7MB). Peak memory consumption was 263.2MB. Max. memory is 16.1GB. [2022-11-18 19:35:12,021 INFO L158 Benchmark]: TraceAbstraction took 117109.52ms. Allocated memory was 541.1MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 408.2MB in the beginning and 1.3GB in the end (delta: -866.6MB). Peak memory consumption was 900.7MB. Max. memory is 16.1GB. [2022-11-18 19:35:12,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 111.1MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1394.41ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 68.2MB in the beginning and 81.4MB in the end (delta: -13.2MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 353.09ms. Allocated memory is still 153.1MB. Free memory was 81.4MB in the beginning and 66.5MB in the end (delta: 14.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 514.00ms. Allocated memory is still 153.1MB. Free memory was 66.5MB in the beginning and 68.0MB in the end (delta: -1.4MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * RCFGBuilder took 8033.67ms. Allocated memory was 153.1MB in the beginning and 541.1MB in the end (delta: 388.0MB). Free memory was 67.5MB in the beginning and 409.3MB in the end (delta: -341.7MB). Peak memory consumption was 263.2MB. Max. memory is 16.1GB. * TraceAbstraction took 117109.52ms. Allocated memory was 541.1MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 408.2MB in the beginning and 1.3GB in the end (delta: -866.6MB). Peak memory consumption was 900.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-18 19:35:12,235 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-18 19:35:12,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro --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 ccf23a42310b5077f35c2c72ddcb89ed6f64312148ee11126a6f676e5b6a8892 --- 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-8393723 [2022-11-18 19:35:14,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:35:14,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:35:14,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:35:14,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:35:14,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:35:14,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:35:14,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:35:14,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:35:14,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:35:14,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:35:14,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:35:14,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:35:14,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:35:14,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:35:14,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:35:14,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:35:14,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:35:14,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:35:14,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:35:14,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:35:15,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:35:15,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:35:15,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:35:15,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:35:15,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:35:15,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:35:15,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:35:15,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:35:15,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:35:15,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:35:15,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:35:15,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:35:15,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:35:15,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:35:15,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:35:15,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:35:15,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:35:15,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:35:15,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:35:15,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:35:15,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-18 19:35:15,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:35:15,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:35:15,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:35:15,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:35:15,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:35:15,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:35:15,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:35:15,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:35:15,059 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:35:15,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:35:15,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:35:15,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:35:15,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:35:15,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:35:15,062 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:35:15,062 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:35:15,062 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:35:15,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:35:15,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:35:15,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:35:15,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:35:15,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:35:15,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:35:15,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:15,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:35:15,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:35:15,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:35:15,066 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:35:15,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:35:15,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:35:15,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:35:15,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:35:15,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:35:15,068 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_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccf23a42310b5077f35c2c72ddcb89ed6f64312148ee11126a6f676e5b6a8892 [2022-11-18 19:35:15,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:35:15,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:35:15,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:35:15,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:35:15,574 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:35:15,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c [2022-11-18 19:35:15,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/e0eee7296/f65364b6c01a47d3a694f53b6b382e11/FLAG0cd7c6a52 [2022-11-18 19:35:16,673 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:35:16,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c [2022-11-18 19:35:16,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/e0eee7296/f65364b6c01a47d3a694f53b6b382e11/FLAG0cd7c6a52 [2022-11-18 19:35:17,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/data/e0eee7296/f65364b6c01a47d3a694f53b6b382e11 [2022-11-18 19:35:17,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:35:17,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:35:17,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:17,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:35:17,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:35:17,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:17" (1/1) ... [2022-11-18 19:35:17,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376b13ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:17, skipping insertion in model container [2022-11-18 19:35:17,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:17" (1/1) ... [2022-11-18 19:35:17,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:35:17,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:17,607 WARN L234 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_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c[1014,1027] [2022-11-18 19:35:18,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:18,332 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:35:18,349 WARN L234 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_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.5.prop2-back-serstep.c[1014,1027] [2022-11-18 19:35:18,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:18,624 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:35:18,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18 WrapperNode [2022-11-18 19:35:18,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:18,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:18,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:35:18,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:35:18,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:18,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:18,874 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3189 [2022-11-18 19:35:18,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:18,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:35:18,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:35:18,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:35:18,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:18,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:18,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:18,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:19,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:19,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:19,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:19,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:19,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:35:19,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:35:19,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:35:19,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:35:19,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (1/1) ... [2022-11-18 19:35:19,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:19,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:19,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:19,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:35:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:35:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:35:20,097 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:35:20,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:35:29,065 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:35:29,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:35:29,074 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:35:29,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:29 BoogieIcfgContainer [2022-11-18 19:35:29,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:35:29,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:35:29,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:35:29,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:35:29,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:35:17" (1/3) ... [2022-11-18 19:35:29,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd98c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:29, skipping insertion in model container [2022-11-18 19:35:29,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:18" (2/3) ... [2022-11-18 19:35:29,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd98c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:29, skipping insertion in model container [2022-11-18 19:35:29,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:29" (3/3) ... [2022-11-18 19:35:29,111 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.brp2.5.prop2-back-serstep.c [2022-11-18 19:35:29,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:35:29,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:35:29,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:35:29,243 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;@3c9be6c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:35:29,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:35:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:35:29,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:29,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:35:29,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-18 19:35:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:35:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232108601] [2022-11-18 19:35:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:29,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:35:29,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:35:29,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:35:29,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:35:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:30,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:35:30,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:30,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:30,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:35:30,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232108601] [2022-11-18 19:35:30,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232108601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:30,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:30,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:35:30,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936087564] [2022-11-18 19:35:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:30,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:35:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:35:30,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:35:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:35:30,590 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:31,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:31,344 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-18 19:35:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:35:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:35:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:31,357 INFO L225 Difference]: With dead ends: 20 [2022-11-18 19:35:31,357 INFO L226 Difference]: Without dead ends: 11 [2022-11-18 19:35:31,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:35:31,366 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:31,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:35:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-18 19:35:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-18 19:35:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2022-11-18 19:35:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-18 19:35:31,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-18 19:35:31,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:31,406 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-18 19:35:31,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:31,406 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-18 19:35:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:35:31,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:31,407 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:31,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:31,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:35:31,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-18 19:35:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:35:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16180404] [2022-11-18 19:35:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:31,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:35:31,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:35:31,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:35:31,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:35:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:33,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-18 19:35:33,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:34,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:36,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:35:36,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16180404] [2022-11-18 19:35:36,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16180404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:36,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:35:36,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:35:36,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283486879] [2022-11-18 19:35:36,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:35:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:35:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:35:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:35:36,621 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:38,047 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-18 19:35:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:35:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 8 [2022-11-18 19:35:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:38,049 INFO L225 Difference]: With dead ends: 16 [2022-11-18 19:35:38,050 INFO L226 Difference]: Without dead ends: 14 [2022-11-18 19:35:38,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:35:38,052 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:38,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 12 Unchecked, 1.2s Time] [2022-11-18 19:35:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-18 19:35:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-18 19:35:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-18 19:35:38,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-18 19:35:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:38,064 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-18 19:35:38,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-18 19:35:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:35:38,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:38,072 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-18 19:35:38,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:38,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:35:38,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-18 19:35:38,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:35:38,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372434876] [2022-11-18 19:35:38,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:35:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:35:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:35:38,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:35:38,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:35:41,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:35:41,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:41,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 5336 conjuncts, 282 conjunts are in the unsatisfiable core [2022-11-18 19:35:41,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:35:50,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:06,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:06,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372434876] [2022-11-18 19:36:06,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372434876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:06,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:06,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 19:36:06,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847127291] [2022-11-18 19:36:06,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:36:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:36:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:36:06,391 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:08,596 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-18 19:36:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:36:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:36:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:08,597 INFO L225 Difference]: With dead ends: 19 [2022-11-18 19:36:08,597 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 19:36:08,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:36:08,599 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:08,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 40 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 41 Unchecked, 1.1s Time] [2022-11-18 19:36:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 19:36:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-18 19:36:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-18 19:36:08,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-18 19:36:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:08,623 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-18 19:36:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:08,623 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-18 19:36:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:36:08,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:08,624 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-18 19:36:08,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:08,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:08,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:36:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-18 19:36:08,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994503896] [2022-11-18 19:36:08,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:36:08,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:08,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:08,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbbfda81-855b-4c8b-9f42-3a0a411e76ea/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:36:13,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:36:13,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:14,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 7810 conjuncts, 802 conjunts are in the unsatisfiable core [2022-11-18 19:36:14,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:03,893 WARN L233 SmtUtils]: Spent 40.09s on a formula simplification. DAG size of input: 933 DAG size of output: 932 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:37:42,259 WARN L233 SmtUtils]: Spent 31.91s on a formula simplification that was a NOOP. DAG size: 958 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)