./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- 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-e04fb08 [2022-11-16 20:20:14,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:20:14,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:20:14,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:20:14,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:20:14,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:20:14,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:20:14,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:20:14,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:20:14,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:20:14,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:20:14,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:20:14,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:20:14,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:20:14,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:20:14,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:20:14,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:20:14,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:20:14,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:20:14,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:20:14,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:20:14,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:20:14,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:20:14,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:20:14,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:20:14,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:20:14,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:20:14,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:20:14,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:20:14,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:20:14,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:20:14,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:20:14,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:20:14,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:20:14,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:20:14,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:20:14,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:20:14,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:20:14,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:20:14,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:20:14,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:20:14,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:20:14,408 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:20:14,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:20:14,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:20:14,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:20:14,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:20:14,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:20:14,409 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:20:14,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:20:14,410 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:20:14,410 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:20:14,410 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:20:14,411 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:20:14,411 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:20:14,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:20:14,411 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:20:14,412 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:20:14,412 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:20:14,412 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:20:14,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:20:14,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:20:14,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:20:14,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:20:14,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:20:14,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:20:14,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:20:14,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:20:14,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:20:14,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:20:14,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:20:14,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:20:14,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:20:14,424 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:20:14,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:20:14,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:20:14,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:20:14,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:20:14,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:20:14,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:20:14,425 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-16 20:20:14,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:20:14,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:20:14,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:20:14,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:20:14,714 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:20:14,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-16 20:20:14,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/02d422d1c/26e261a3b6a046c492b66ab1fcac56e7/FLAGb1d5cb63a [2022-11-16 20:20:15,559 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:20:15,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-16 20:20:15,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/02d422d1c/26e261a3b6a046c492b66ab1fcac56e7/FLAGb1d5cb63a [2022-11-16 20:20:16,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/02d422d1c/26e261a3b6a046c492b66ab1fcac56e7 [2022-11-16 20:20:16,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:20:16,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:20:16,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:20:16,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:20:16,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:20:16,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cec2385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:16, skipping insertion in model container [2022-11-16 20:20:16,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:20:16" (1/1) ... [2022-11-16 20:20:16,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:20:16,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:20:17,525 WARN L229 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-16 20:20:17,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:20:17,561 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:20:17,936 WARN L229 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-16 20:20:17,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:20:18,037 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:20:18,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18 WrapperNode [2022-11-16 20:20:18,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:20:18,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:20:18,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:20:18,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:20:18,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,262 INFO L138 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2775 [2022-11-16 20:20:18,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:20:18,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:20:18,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:20:18,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:20:18,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,405 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:20:18,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:20:18,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:20:18,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:20:18,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (1/1) ... [2022-11-16 20:20:18,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:20:18,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:20:18,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:20:18,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:20:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 20:20:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-16 20:20:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 20:20:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 20:20:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:20:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-16 20:20:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-16 20:20:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-16 20:20:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-16 20:20:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-16 20:20:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-16 20:20:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 20:20:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 20:20:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-16 20:20:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-16 20:20:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:20:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:20:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 20:20:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 20:20:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-16 20:20:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-16 20:20:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-16 20:20:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-16 20:20:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 20:20:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 20:20:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-16 20:20:18,540 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-16 20:20:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:20:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-16 20:20:18,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-16 20:20:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-16 20:20:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-16 20:20:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-16 20:20:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-16 20:20:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 20:20:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 20:20:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-16 20:20:18,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-16 20:20:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-16 20:20:18,542 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-16 20:20:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:20:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-16 20:20:18,542 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-16 20:20:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-16 20:20:18,543 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-16 20:20:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:20:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-16 20:20:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-16 20:20:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-16 20:20:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-16 20:20:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:20:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:20:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 20:20:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-16 20:20:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-16 20:20:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:20:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-16 20:20:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-16 20:20:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-16 20:20:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-16 20:20:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-16 20:20:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-16 20:20:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-16 20:20:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-16 20:20:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-16 20:20:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-16 20:20:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:20:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-16 20:20:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-16 20:20:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:20:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-16 20:20:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-16 20:20:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-16 20:20:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-16 20:20:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-16 20:20:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-16 20:20:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 20:20:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 20:20:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-16 20:20:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-16 20:20:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-16 20:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-16 20:20:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-16 20:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-16 20:20:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 20:20:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 20:20:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-16 20:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-16 20:20:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:20:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-16 20:20:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-16 20:20:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-16 20:20:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-16 20:20:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-16 20:20:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-16 20:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-16 20:20:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-16 20:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 20:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:20:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:20:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-16 20:20:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-16 20:20:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-16 20:20:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-16 20:20:19,229 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:20:19,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:20:21,991 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:20:23,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:20:23,122 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 20:20:23,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:20:23 BoogieIcfgContainer [2022-11-16 20:20:23,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:20:23,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:20:23,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:20:23,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:20:23,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:20:16" (1/3) ... [2022-11-16 20:20:23,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c11b1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:20:23, skipping insertion in model container [2022-11-16 20:20:23,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:20:18" (2/3) ... [2022-11-16 20:20:23,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c11b1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:20:23, skipping insertion in model container [2022-11-16 20:20:23,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:20:23" (3/3) ... [2022-11-16 20:20:23,143 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-16 20:20:23,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:20:23,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:20:23,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:20:23,312 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=FINITE_AUTOMATA, 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;@33675190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:20:23,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:20:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 666 states, 414 states have (on average 1.391304347826087) internal successors, (576), 441 states have internal predecessors, (576), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-16 20:20:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 20:20:23,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:23,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 20:20:23,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:20:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:23,354 INFO L85 PathProgramCache]: Analyzing trace with hash 764530665, now seen corresponding path program 1 times [2022-11-16 20:20:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:23,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167389291] [2022-11-16 20:20:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:20:23,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167389291] [2022-11-16 20:20:23,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167389291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:23,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:23,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:20:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323401406] [2022-11-16 20:20:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:23,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:20:23,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:20:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:20:24,020 INFO L87 Difference]: Start difference. First operand has 666 states, 414 states have (on average 1.391304347826087) internal successors, (576), 441 states have internal predecessors, (576), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:20:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:20:25,948 INFO L93 Difference]: Finished difference Result 1323 states and 1964 transitions. [2022-11-16 20:20:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:20:25,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2022-11-16 20:20:25,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:20:25,968 INFO L225 Difference]: With dead ends: 1323 [2022-11-16 20:20:25,968 INFO L226 Difference]: Without dead ends: 638 [2022-11-16 20:20:25,976 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 [2022-11-16 20:20:25,982 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 5 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:20:25,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2608 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 20:20:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-16 20:20:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2022-11-16 20:20:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 395 states have (on average 1.369620253164557) internal successors, (541), 419 states have internal predecessors, (541), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-16 20:20:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 939 transitions. [2022-11-16 20:20:26,089 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 939 transitions. Word has length 45 [2022-11-16 20:20:26,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:20:26,090 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 939 transitions. [2022-11-16 20:20:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:20:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 939 transitions. [2022-11-16 20:20:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 20:20:26,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:26,098 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 20:20:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:20:26,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:20:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1602965888, now seen corresponding path program 1 times [2022-11-16 20:20:26,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:26,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084049212] [2022-11-16 20:20:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:20:26,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:26,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084049212] [2022-11-16 20:20:26,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084049212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:26,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:26,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:20:26,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175313055] [2022-11-16 20:20:26,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:26,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:20:26,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:26,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:20:26,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:20:26,501 INFO L87 Difference]: Start difference. First operand 638 states and 939 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:20:28,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:20:29,950 INFO L93 Difference]: Finished difference Result 1019 states and 1559 transitions. [2022-11-16 20:20:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:20:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47 [2022-11-16 20:20:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:20:29,956 INFO L225 Difference]: With dead ends: 1019 [2022-11-16 20:20:29,957 INFO L226 Difference]: Without dead ends: 1017 [2022-11-16 20:20:29,957 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 [2022-11-16 20:20:29,960 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 599 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 215 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:20:29,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 3401 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 20:20:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-16 20:20:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 640. [2022-11-16 20:20:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 397 states have (on average 1.3677581863979849) internal successors, (543), 421 states have internal predecessors, (543), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-16 20:20:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 941 transitions. [2022-11-16 20:20:30,039 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 941 transitions. Word has length 47 [2022-11-16 20:20:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:20:30,040 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 941 transitions. [2022-11-16 20:20:30,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:20:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 941 transitions. [2022-11-16 20:20:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 20:20:30,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:30,047 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 20:20:30,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:20:30,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:20:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1342306410, now seen corresponding path program 1 times [2022-11-16 20:20:30,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:30,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030915129] [2022-11-16 20:20:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:30,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:20:30,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:30,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030915129] [2022-11-16 20:20:30,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030915129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:30,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:30,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:20:30,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987471609] [2022-11-16 20:20:30,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:30,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:20:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:30,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:20:30,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:20:30,383 INFO L87 Difference]: Start difference. First operand 640 states and 941 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 20:20:33,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:35,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:20:36,981 INFO L93 Difference]: Finished difference Result 1648 states and 2484 transitions. [2022-11-16 20:20:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:20:36,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2022-11-16 20:20:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:20:36,989 INFO L225 Difference]: With dead ends: 1648 [2022-11-16 20:20:36,990 INFO L226 Difference]: Without dead ends: 1021 [2022-11-16 20:20:36,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:20:36,998 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 1460 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:20:37,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1590 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 904 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-11-16 20:20:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-11-16 20:20:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 641. [2022-11-16 20:20:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 398 states have (on average 1.3668341708542713) internal successors, (544), 422 states have internal predecessors, (544), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-16 20:20:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 942 transitions. [2022-11-16 20:20:37,055 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 942 transitions. Word has length 55 [2022-11-16 20:20:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:20:37,057 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 942 transitions. [2022-11-16 20:20:37,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 20:20:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 942 transitions. [2022-11-16 20:20:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 20:20:37,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:37,063 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 20:20:37,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:20:37,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:20:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1926133285, now seen corresponding path program 1 times [2022-11-16 20:20:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:37,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26246993] [2022-11-16 20:20:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:37,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:20:37,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26246993] [2022-11-16 20:20:37,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26246993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:37,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:37,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:20:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165117509] [2022-11-16 20:20:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:20:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:20:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:20:37,341 INFO L87 Difference]: Start difference. First operand 641 states and 942 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:20:40,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:42,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:45,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:47,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:20:48,818 INFO L93 Difference]: Finished difference Result 1922 states and 3025 transitions. [2022-11-16 20:20:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:20:48,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2022-11-16 20:20:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:20:48,832 INFO L225 Difference]: With dead ends: 1922 [2022-11-16 20:20:48,832 INFO L226 Difference]: Without dead ends: 1920 [2022-11-16 20:20:48,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:20:48,834 INFO L413 NwaCegarLoop]: 1848 mSDtfsCounter, 1772 mSDsluCounter, 4521 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 588 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 6369 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:20:48,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 6369 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 681 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2022-11-16 20:20:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-11-16 20:20:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 643. [2022-11-16 20:20:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 399 states have (on average 1.3659147869674186) internal successors, (545), 422 states have internal predecessors, (545), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-11-16 20:20:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 945 transitions. [2022-11-16 20:20:48,942 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 945 transitions. Word has length 56 [2022-11-16 20:20:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:20:48,943 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 945 transitions. [2022-11-16 20:20:48,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:20:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 945 transitions. [2022-11-16 20:20:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 20:20:48,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:48,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:20:48,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:20:48,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:20:48,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1016551155, now seen corresponding path program 1 times [2022-11-16 20:20:48,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898201526] [2022-11-16 20:20:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:48,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:20:49,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:49,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898201526] [2022-11-16 20:20:49,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898201526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:49,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:49,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:20:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307161915] [2022-11-16 20:20:49,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:49,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:20:49,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:20:49,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:20:49,181 INFO L87 Difference]: Start difference. First operand 643 states and 945 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 20:20:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:20:50,627 INFO L93 Difference]: Finished difference Result 1285 states and 1882 transitions. [2022-11-16 20:20:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:20:50,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 80 [2022-11-16 20:20:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:20:50,633 INFO L225 Difference]: With dead ends: 1285 [2022-11-16 20:20:50,633 INFO L226 Difference]: Without dead ends: 655 [2022-11-16 20:20:50,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:20:50,636 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 900 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:20:50,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 836 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 20:20:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-16 20:20:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-11-16 20:20:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 405 states have (on average 1.3580246913580247) internal successors, (550), 428 states have internal predecessors, (550), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-16 20:20:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 954 transitions. [2022-11-16 20:20:50,745 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 954 transitions. Word has length 80 [2022-11-16 20:20:50,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:20:50,745 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 954 transitions. [2022-11-16 20:20:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 20:20:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 954 transitions. [2022-11-16 20:20:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 20:20:50,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:20:50,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:20:50,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:20:50,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:20:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:20:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash -243431597, now seen corresponding path program 1 times [2022-11-16 20:20:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:20:50,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551980773] [2022-11-16 20:20:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:20:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:20:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:20:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:20:51,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:20:51,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551980773] [2022-11-16 20:20:51,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551980773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:20:51,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:20:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:20:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719548218] [2022-11-16 20:20:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:20:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:20:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:20:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:20:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:20:51,059 INFO L87 Difference]: Start difference. First operand 655 states and 954 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 20:20:53,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:57,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:20:59,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:21:02,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:21:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:04,065 INFO L93 Difference]: Finished difference Result 2431 states and 3741 transitions. [2022-11-16 20:21:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:21:04,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 82 [2022-11-16 20:21:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:04,077 INFO L225 Difference]: With dead ends: 2431 [2022-11-16 20:21:04,078 INFO L226 Difference]: Without dead ends: 1801 [2022-11-16 20:21:04,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:21:04,083 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 2188 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 470 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:04,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2326 Valid, 3517 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1828 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-11-16 20:21:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-11-16 20:21:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 658. [2022-11-16 20:21:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 408 states have (on average 1.357843137254902) internal successors, (554), 431 states have internal predecessors, (554), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-16 20:21:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 958 transitions. [2022-11-16 20:21:04,211 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 958 transitions. Word has length 82 [2022-11-16 20:21:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:04,212 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 958 transitions. [2022-11-16 20:21:04,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 20:21:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 958 transitions. [2022-11-16 20:21:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 20:21:04,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:04,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:04,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:21:04,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:21:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1794307585, now seen corresponding path program 1 times [2022-11-16 20:21:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:21:04,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968699622] [2022-11-16 20:21:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:04,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:21:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:21:04,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:21:04,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968699622] [2022-11-16 20:21:04,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968699622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:21:04,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527422739] [2022-11-16 20:21:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:04,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:21:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:21:04,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:21:04,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:21:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:05,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 20:21:05,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:21:05,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:21:05,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527422739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:21:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [56983112] [2022-11-16 20:21:05,623 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-16 20:21:05,623 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:21:05,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:21:05,631 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:21:05,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:21:06,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:06,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:06,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:06,389 INFO L217 Elim1Store]: Index analysis took 126 ms [2022-11-16 20:21:08,598 INFO L321 Elim1Store]: treesize reduction 1134, result has 27.6 percent of original size [2022-11-16 20:21:08,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 29 select indices, 29 select index equivalence classes, 415 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 30 case distinctions, treesize of input 158 treesize of output 530 [2022-11-16 20:21:09,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:09,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:09,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:09,504 INFO L217 Elim1Store]: Index analysis took 360 ms [2022-11-16 20:21:13,473 INFO L321 Elim1Store]: treesize reduction 1776, result has 21.5 percent of original size [2022-11-16 20:21:13,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 33 select indices, 33 select index equivalence classes, 441 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 119 case distinctions, treesize of input 190 treesize of output 613 [2022-11-16 20:21:15,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 20:21:15,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 20:21:15,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:15,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:15,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 499 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 97 [2022-11-16 20:21:16,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:16,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:16,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:16,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 528 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-16 20:21:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:17,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:17,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:17,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 499 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 97 [2022-11-16 20:21:17,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:17,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:21:17,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 528 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-16 20:22:36,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 20:22:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 20:22:36,807 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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) 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) [2022-11-16 20:22:36,811 INFO L158 Benchmark]: Toolchain (without parser) took 140695.13ms. Allocated memory was 109.1MB in the beginning and 916.5MB in the end (delta: 807.4MB). Free memory was 80.4MB in the beginning and 312.8MB in the end (delta: -232.4MB). Peak memory consumption was 613.2MB. Max. memory is 16.1GB. [2022-11-16 20:22:36,811 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:22:36,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1921.25ms. Allocated memory was 109.1MB in the beginning and 140.5MB in the end (delta: 31.5MB). Free memory was 80.0MB in the beginning and 52.3MB in the end (delta: 27.7MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2022-11-16 20:22:36,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 226.52ms. Allocated memory is still 140.5MB. Free memory was 52.3MB in the beginning and 77.4MB in the end (delta: -25.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-11-16 20:22:36,812 INFO L158 Benchmark]: Boogie Preprocessor took 190.53ms. Allocated memory is still 140.5MB. Free memory was 77.4MB in the beginning and 60.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 20:22:36,812 INFO L158 Benchmark]: RCFGBuilder took 4673.66ms. Allocated memory was 140.5MB in the beginning and 385.9MB in the end (delta: 245.4MB). Free memory was 60.6MB in the beginning and 141.4MB in the end (delta: -80.9MB). Peak memory consumption was 163.1MB. Max. memory is 16.1GB. [2022-11-16 20:22:36,812 INFO L158 Benchmark]: TraceAbstraction took 133675.02ms. Allocated memory was 385.9MB in the beginning and 916.5MB in the end (delta: 530.6MB). Free memory was 141.4MB in the beginning and 312.8MB in the end (delta: -171.3MB). Peak memory consumption was 399.2MB. Max. memory is 16.1GB. [2022-11-16 20:22:36,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1921.25ms. Allocated memory was 109.1MB in the beginning and 140.5MB in the end (delta: 31.5MB). Free memory was 80.0MB in the beginning and 52.3MB in the end (delta: 27.7MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 226.52ms. Allocated memory is still 140.5MB. Free memory was 52.3MB in the beginning and 77.4MB in the end (delta: -25.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 190.53ms. Allocated memory is still 140.5MB. Free memory was 77.4MB in the beginning and 60.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 4673.66ms. Allocated memory was 140.5MB in the beginning and 385.9MB in the end (delta: 245.4MB). Free memory was 60.6MB in the beginning and 141.4MB in the end (delta: -80.9MB). Peak memory consumption was 163.1MB. Max. memory is 16.1GB. * TraceAbstraction took 133675.02ms. Allocated memory was 385.9MB in the beginning and 916.5MB in the end (delta: 530.6MB). Free memory was 141.4MB in the beginning and 312.8MB in the end (delta: -171.3MB). Peak memory consumption was 399.2MB. 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. [2022-11-16 20:22:36,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- 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-e04fb08 [2022-11-16 20:22:39,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:22:39,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:22:39,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:22:39,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:22:39,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:22:39,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:22:39,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:22:39,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:22:39,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:22:39,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:22:39,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:22:39,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:22:39,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:22:39,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:22:39,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:22:39,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:22:39,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:22:39,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:22:39,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:22:39,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:22:39,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:22:39,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:22:39,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:22:39,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:22:39,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:22:39,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:22:39,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:22:39,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:22:39,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:22:39,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:22:39,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:22:39,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:22:39,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:22:39,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:22:39,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:22:39,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:22:39,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:22:39,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:22:39,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:22:39,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:22:39,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 20:22:39,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:22:39,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:22:39,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:22:39,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:22:39,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:22:39,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:22:39,226 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:22:39,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:22:39,226 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:22:39,226 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:22:39,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:22:39,228 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:22:39,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:22:39,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:22:39,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:22:39,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:22:39,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:22:39,231 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:22:39,231 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:22:39,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:22:39,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:22:39,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:22:39,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:22:39,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:22:39,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:22:39,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:22:39,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:22:39,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:22:39,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:22:39,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:22:39,233 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:22:39,234 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:39,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:22:39,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:22:39,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:22:39,235 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-16 20:22:39,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:22:39,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:22:39,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:22:39,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:22:39,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:22:39,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-16 20:22:39,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/7b53045c5/2c5e19fea43d4a69a3145076e0789266/FLAG0a2a311ad [2022-11-16 20:22:40,571 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:22:40,572 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-16 20:22:40,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/7b53045c5/2c5e19fea43d4a69a3145076e0789266/FLAG0a2a311ad [2022-11-16 20:22:41,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/data/7b53045c5/2c5e19fea43d4a69a3145076e0789266 [2022-11-16 20:22:41,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:22:41,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:22:41,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:22:41,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:22:41,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:22:41,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:22:41" (1/1) ... [2022-11-16 20:22:41,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68df0c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:41, skipping insertion in model container [2022-11-16 20:22:41,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:22:41" (1/1) ... [2022-11-16 20:22:41,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:22:41,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:22:42,742 WARN L229 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-16 20:22:42,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:22:42,814 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 20:22:42,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:22:43,179 WARN L229 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-16 20:22:43,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:22:43,206 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:22:43,469 WARN L229 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_608e2a01-7b61-445f-b9d1-28d0f467c8f4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-16 20:22:43,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:22:43,577 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:22:43,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43 WrapperNode [2022-11-16 20:22:43,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:22:43,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:22:43,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:22:43,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:22:43,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:43,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:43,856 INFO L138 Inliner]: procedures = 170, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2683 [2022-11-16 20:22:43,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:22:43,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:22:43,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:22:43,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:22:43,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:43,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:43,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:43,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:44,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:44,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:44,094 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:44,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:44,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:22:44,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:22:44,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:22:44,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:22:44,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (1/1) ... [2022-11-16 20:22:44,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:22:44,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:44,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:22:44,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:22:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 20:22:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-16 20:22:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-16 20:22:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 20:22:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 20:22:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 20:22:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-16 20:22:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-16 20:22:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-16 20:22:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-16 20:22:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-16 20:22:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-16 20:22:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 20:22:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 20:22:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-16 20:22:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-16 20:22:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:22:44,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:22:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 20:22:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 20:22:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-16 20:22:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-16 20:22:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-16 20:22:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-16 20:22:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 20:22:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 20:22:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-16 20:22:44,207 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-16 20:22:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-16 20:22:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-16 20:22:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-16 20:22:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-16 20:22:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-16 20:22:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-16 20:22:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-16 20:22:44,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-16 20:22:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-16 20:22:44,209 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-16 20:22:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 20:22:44,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 20:22:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-16 20:22:44,209 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-16 20:22:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-16 20:22:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-16 20:22:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:22:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-16 20:22:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-16 20:22:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-16 20:22:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-16 20:22:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:22:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-16 20:22:44,213 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-16 20:22:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-16 20:22:44,214 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-16 20:22:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:22:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:22:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 20:22:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-16 20:22:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-16 20:22:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-16 20:22:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-16 20:22:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-16 20:22:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:22:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-16 20:22:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-16 20:22:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-16 20:22:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-16 20:22:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-16 20:22:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-16 20:22:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-16 20:22:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-16 20:22:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-16 20:22:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-16 20:22:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-16 20:22:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-16 20:22:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-16 20:22:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:22:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 20:22:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-16 20:22:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-16 20:22:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:22:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-16 20:22:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-16 20:22:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-16 20:22:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-16 20:22:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-16 20:22:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-16 20:22:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 20:22:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-16 20:22:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 20:22:44,223 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 20:22:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-16 20:22:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-16 20:22:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-16 20:22:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-16 20:22:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-16 20:22:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-16 20:22:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 20:22:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 20:22:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-16 20:22:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-16 20:22:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-16 20:22:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-16 20:22:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-16 20:22:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-16 20:22:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-16 20:22:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-16 20:22:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-16 20:22:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-16 20:22:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-16 20:22:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:22:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:22:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-16 20:22:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-16 20:22:44,231 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-16 20:22:44,231 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-16 20:22:44,953 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:22:44,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:23:06,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:23:06,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:23:06,218 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 20:23:06,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:23:06 BoogieIcfgContainer [2022-11-16 20:23:06,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:23:06,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:23:06,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:23:06,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:23:06,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:22:41" (1/3) ... [2022-11-16 20:23:06,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebd8904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:23:06, skipping insertion in model container [2022-11-16 20:23:06,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:22:43" (2/3) ... [2022-11-16 20:23:06,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebd8904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:23:06, skipping insertion in model container [2022-11-16 20:23:06,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:23:06" (3/3) ... [2022-11-16 20:23:06,236 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-16 20:23:06,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:23:06,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:23:06,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:23:06,374 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=FINITE_AUTOMATA, 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;@63dcaa5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:23:06,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:23:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 709 states have (on average 1.4287729196050776) internal successors, (1013), 736 states have internal predecessors, (1013), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-16 20:23:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 20:23:06,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:06,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:06,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -409076956, now seen corresponding path program 1 times [2022-11-16 20:23:06,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:06,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031691878] [2022-11-16 20:23:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:06,442 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 [2022-11-16 20:23:06,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:06,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:06,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:07,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:23:07,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:23:07,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:07,276 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:07,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031691878] [2022-11-16 20:23:07,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031691878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:07,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:07,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:23:07,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956084130] [2022-11-16 20:23:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:07,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:23:07,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:23:07,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:23:07,339 INFO L87 Difference]: Start difference. First operand has 961 states, 709 states have (on average 1.4287729196050776) internal successors, (1013), 736 states have internal predecessors, (1013), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:23:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:07,534 INFO L93 Difference]: Finished difference Result 1918 states and 2864 transitions. [2022-11-16 20:23:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:23:07,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-16 20:23:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:07,554 INFO L225 Difference]: With dead ends: 1918 [2022-11-16 20:23:07,554 INFO L226 Difference]: Without dead ends: 922 [2022-11-16 20:23:07,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:23:07,564 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1405 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:07,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1411 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:23:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-16 20:23:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-11-16 20:23:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 679 states have (on average 1.4182621502209132) internal successors, (963), 703 states have internal predecessors, (963), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-16 20:23:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1361 transitions. [2022-11-16 20:23:07,699 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1361 transitions. Word has length 59 [2022-11-16 20:23:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:07,701 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1361 transitions. [2022-11-16 20:23:07,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:23:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1361 transitions. [2022-11-16 20:23:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 20:23:07,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:07,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:07,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:07,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:07,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash 14569766, now seen corresponding path program 1 times [2022-11-16 20:23:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:07,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032699457] [2022-11-16 20:23:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:07,922 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 [2022-11-16 20:23:07,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:07,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:07,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:08,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:23:08,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:23:08,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:08,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:08,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032699457] [2022-11-16 20:23:08,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032699457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:08,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:08,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:23:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386032199] [2022-11-16 20:23:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:23:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:23:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:08,454 INFO L87 Difference]: Start difference. First operand 922 states and 1361 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:23:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:08,626 INFO L93 Difference]: Finished difference Result 1827 states and 2699 transitions. [2022-11-16 20:23:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:23:08,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-16 20:23:08,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:08,635 INFO L225 Difference]: With dead ends: 1827 [2022-11-16 20:23:08,635 INFO L226 Difference]: Without dead ends: 922 [2022-11-16 20:23:08,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:23:08,639 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:08,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4075 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:23:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-16 20:23:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-11-16 20:23:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 679 states have (on average 1.4167893961708395) internal successors, (962), 703 states have internal predecessors, (962), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-16 20:23:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1360 transitions. [2022-11-16 20:23:08,758 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1360 transitions. Word has length 59 [2022-11-16 20:23:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:08,759 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1360 transitions. [2022-11-16 20:23:08,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:23:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1360 transitions. [2022-11-16 20:23:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 20:23:08,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:08,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:08,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:08,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:08,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:08,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1156177197, now seen corresponding path program 1 times [2022-11-16 20:23:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:08,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497956495] [2022-11-16 20:23:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:08,983 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 [2022-11-16 20:23:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:08,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:08,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:09,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 20:23:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 20:23:09,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:09,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497956495] [2022-11-16 20:23:09,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497956495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:09,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:09,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 20:23:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052640583] [2022-11-16 20:23:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:09,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 20:23:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 20:23:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:23:09,781 INFO L87 Difference]: Start difference. First operand 922 states and 1360 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:23:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:11,196 INFO L93 Difference]: Finished difference Result 1866 states and 2747 transitions. [2022-11-16 20:23:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 20:23:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-11-16 20:23:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:11,202 INFO L225 Difference]: With dead ends: 1866 [2022-11-16 20:23:11,202 INFO L226 Difference]: Without dead ends: 950 [2022-11-16 20:23:11,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-16 20:23:11,206 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 42 mSDsluCounter, 9470 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10830 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:11,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10830 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 20:23:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-16 20:23:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 944. [2022-11-16 20:23:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 694 states have (on average 1.4092219020172911) internal successors, (978), 719 states have internal predecessors, (978), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-16 20:23:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1381 transitions. [2022-11-16 20:23:11,266 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1381 transitions. Word has length 62 [2022-11-16 20:23:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:11,268 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1381 transitions. [2022-11-16 20:23:11,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 20:23:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1381 transitions. [2022-11-16 20:23:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 20:23:11,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:11,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:11,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:11,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1594030711, now seen corresponding path program 1 times [2022-11-16 20:23:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:11,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584312840] [2022-11-16 20:23:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:11,488 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 [2022-11-16 20:23:11,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:11,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:11,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:11,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:23:11,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:23:12,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:12,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:12,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584312840] [2022-11-16 20:23:12,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584312840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:12,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:12,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:23:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327195608] [2022-11-16 20:23:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:23:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:23:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:12,021 INFO L87 Difference]: Start difference. First operand 944 states and 1381 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:23:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:12,750 INFO L93 Difference]: Finished difference Result 1455 states and 2196 transitions. [2022-11-16 20:23:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:23:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-11-16 20:23:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:12,759 INFO L225 Difference]: With dead ends: 1455 [2022-11-16 20:23:12,759 INFO L226 Difference]: Without dead ends: 1453 [2022-11-16 20:23:12,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:23:12,761 INFO L413 NwaCegarLoop]: 2163 mSDtfsCounter, 915 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:12,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 5328 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:23:12,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2022-11-16 20:23:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 946. [2022-11-16 20:23:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 696 states have (on average 1.4080459770114941) internal successors, (980), 721 states have internal predecessors, (980), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-16 20:23:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1383 transitions. [2022-11-16 20:23:12,854 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1383 transitions. Word has length 65 [2022-11-16 20:23:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:12,855 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1383 transitions. [2022-11-16 20:23:12,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:23:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1383 transitions. [2022-11-16 20:23:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 20:23:12,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:12,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:12,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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)] Forceful destruction successful, exit code 0 [2022-11-16 20:23:13,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:13,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2133834646, now seen corresponding path program 1 times [2022-11-16 20:23:13,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:13,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431835737] [2022-11-16 20:23:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:13,077 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 [2022-11-16 20:23:13,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:13,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:13,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (6)] Waiting until timeout for monitored process [2022-11-16 20:23:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:13,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:23:13,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:23:13,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:13,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:13,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431835737] [2022-11-16 20:23:13,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431835737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:13,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:13,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:23:13,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348214902] [2022-11-16 20:23:13,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:13,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:23:13,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:13,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:23:13,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:13,599 INFO L87 Difference]: Start difference. First operand 946 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:23:14,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:14,328 INFO L93 Difference]: Finished difference Result 1458 states and 2199 transitions. [2022-11-16 20:23:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:23:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2022-11-16 20:23:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:14,341 INFO L225 Difference]: With dead ends: 1458 [2022-11-16 20:23:14,341 INFO L226 Difference]: Without dead ends: 1456 [2022-11-16 20:23:14,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:23:14,343 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 915 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:14,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 5336 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:23:14,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-11-16 20:23:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 946. [2022-11-16 20:23:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 696 states have (on average 1.4080459770114941) internal successors, (980), 721 states have internal predecessors, (980), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-16 20:23:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1383 transitions. [2022-11-16 20:23:14,457 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1383 transitions. Word has length 66 [2022-11-16 20:23:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:14,457 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1383 transitions. [2022-11-16 20:23:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 20:23:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1383 transitions. [2022-11-16 20:23:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 20:23:14,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:14,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:14,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:23:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:14,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2126255121, now seen corresponding path program 1 times [2022-11-16 20:23:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:14,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458251963] [2022-11-16 20:23:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:14,677 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 [2022-11-16 20:23:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:14,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (7)] Waiting until timeout for monitored process [2022-11-16 20:23:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:15,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:23:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:23:15,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:15,491 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:15,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458251963] [2022-11-16 20:23:15,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458251963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:15,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:15,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:23:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131990658] [2022-11-16 20:23:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:15,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:23:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:23:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:15,493 INFO L87 Difference]: Start difference. First operand 946 states and 1383 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:23:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:18,910 INFO L93 Difference]: Finished difference Result 2362 states and 3536 transitions. [2022-11-16 20:23:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:23:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 75 [2022-11-16 20:23:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:18,919 INFO L225 Difference]: With dead ends: 2362 [2022-11-16 20:23:18,919 INFO L226 Difference]: Without dead ends: 1457 [2022-11-16 20:23:18,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:18,923 INFO L413 NwaCegarLoop]: 1845 mSDtfsCounter, 1835 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:18,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2795 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 20:23:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2022-11-16 20:23:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 947. [2022-11-16 20:23:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 697 states have (on average 1.4074605451936872) internal successors, (981), 722 states have internal predecessors, (981), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-16 20:23:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1384 transitions. [2022-11-16 20:23:19,066 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1384 transitions. Word has length 75 [2022-11-16 20:23:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:19,067 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1384 transitions. [2022-11-16 20:23:19,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:23:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1384 transitions. [2022-11-16 20:23:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 20:23:19,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:19,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:19,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:23:19,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:19,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1326022320, now seen corresponding path program 1 times [2022-11-16 20:23:19,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:19,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543303731] [2022-11-16 20:23:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:19,288 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 [2022-11-16 20:23:19,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:19,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:19,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (8)] Waiting until timeout for monitored process [2022-11-16 20:23:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:19,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:23:19,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:23:19,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:19,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543303731] [2022-11-16 20:23:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543303731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:19,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:19,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:23:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454872279] [2022-11-16 20:23:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:23:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:23:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:23:19,770 INFO L87 Difference]: Start difference. First operand 947 states and 1384 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:23:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:20,704 INFO L93 Difference]: Finished difference Result 1464 states and 2207 transitions. [2022-11-16 20:23:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:23:20,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-16 20:23:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:20,713 INFO L225 Difference]: With dead ends: 1464 [2022-11-16 20:23:20,713 INFO L226 Difference]: Without dead ends: 1462 [2022-11-16 20:23:20,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:23:20,715 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 1299 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:20,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 6996 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 20:23:20,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-16 20:23:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 949. [2022-11-16 20:23:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 698 states have (on average 1.4068767908309456) internal successors, (982), 723 states have internal predecessors, (982), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-16 20:23:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1387 transitions. [2022-11-16 20:23:20,859 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1387 transitions. Word has length 77 [2022-11-16 20:23:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:20,860 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1387 transitions. [2022-11-16 20:23:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 20:23:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1387 transitions. [2022-11-16 20:23:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 20:23:20,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:20,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:20,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:23:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:21,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:21,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash 523121960, now seen corresponding path program 1 times [2022-11-16 20:23:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:21,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293056065] [2022-11-16 20:23:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:21,087 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 [2022-11-16 20:23:21,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:21,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:21,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (9)] Waiting until timeout for monitored process [2022-11-16 20:23:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:21,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:23:21,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 20:23:21,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:21,860 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:21,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293056065] [2022-11-16 20:23:21,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293056065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:21,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:21,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:23:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057496118] [2022-11-16 20:23:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:21,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:23:21,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:23:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:23:21,863 INFO L87 Difference]: Start difference. First operand 949 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 20:23:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:22,544 INFO L93 Difference]: Finished difference Result 1857 states and 2729 transitions. [2022-11-16 20:23:22,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:23:22,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-16 20:23:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:22,571 INFO L225 Difference]: With dead ends: 1857 [2022-11-16 20:23:22,571 INFO L226 Difference]: Without dead ends: 949 [2022-11-16 20:23:22,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:23:22,579 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1305 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:22,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1396 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:23:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-16 20:23:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-11-16 20:23:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 698 states have (on average 1.4054441260744985) internal successors, (981), 723 states have internal predecessors, (981), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-16 20:23:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1386 transitions. [2022-11-16 20:23:22,786 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1386 transitions. Word has length 85 [2022-11-16 20:23:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:22,787 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1386 transitions. [2022-11-16 20:23:22,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 20:23:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1386 transitions. [2022-11-16 20:23:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 20:23:22,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:22,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:22,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (9)] Forceful destruction successful, exit code 0 [2022-11-16 20:23:23,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:23,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash 596960674, now seen corresponding path program 1 times [2022-11-16 20:23:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:23,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308573452] [2022-11-16 20:23:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:23,009 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 [2022-11-16 20:23:23,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:23,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:23,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (10)] Waiting until timeout for monitored process [2022-11-16 20:23:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:23,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:23:23,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:23:23,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:23,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:23,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308573452] [2022-11-16 20:23:23,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308573452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:23,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:23,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:23:23,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870039726] [2022-11-16 20:23:23,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:23,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:23:23,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:23:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:23,773 INFO L87 Difference]: Start difference. First operand 949 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 20:23:26,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:23:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:23:28,843 INFO L93 Difference]: Finished difference Result 2370 states and 3544 transitions. [2022-11-16 20:23:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:23:28,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-16 20:23:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:23:28,850 INFO L225 Difference]: With dead ends: 2370 [2022-11-16 20:23:28,851 INFO L226 Difference]: Without dead ends: 1462 [2022-11-16 20:23:28,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:23:28,854 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 2042 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:23:28,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 2858 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 20:23:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-16 20:23:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 953. [2022-11-16 20:23:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 702 states have (on average 1.4045584045584045) internal successors, (986), 727 states have internal predecessors, (986), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-16 20:23:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1391 transitions. [2022-11-16 20:23:29,014 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1391 transitions. Word has length 87 [2022-11-16 20:23:29,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:23:29,015 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1391 transitions. [2022-11-16 20:23:29,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 20:23:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1391 transitions. [2022-11-16 20:23:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 20:23:29,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:23:29,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:23:29,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (10)] Forceful destruction successful, exit code 0 [2022-11-16 20:23:29,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:23:29,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:23:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:23:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash -272015955, now seen corresponding path program 1 times [2022-11-16 20:23:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:23:29,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596446436] [2022-11-16 20:23:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:23:29,233 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 [2022-11-16 20:23:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:23:29,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:23:29,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (11)] Waiting until timeout for monitored process [2022-11-16 20:23:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:23:29,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 20:23:29,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:23:30,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2022-11-16 20:23:30,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2022-11-16 20:23:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 20:23:30,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:23:30,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:23:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596446436] [2022-11-16 20:23:30,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596446436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:23:30,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:23:30,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 20:23:30,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571854525] [2022-11-16 20:23:30,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:23:30,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 20:23:30,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:23:30,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 20:23:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:23:30,307 INFO L87 Difference]: Start difference. First operand 953 states and 1391 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 20:23:32,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:23:34,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:23:39,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:23:50,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:23:52,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:23:54,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:01,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:06,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:10,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:11,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:21,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:23,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:26,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:28,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:29,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:31,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:34,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:37,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:39,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:24:41,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:12,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:14,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:15,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:17,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:20,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:22,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:23,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:24,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:26,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:29,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:37,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:39,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:45,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:46,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:48,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:50,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:52,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:25:55,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:01,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:03,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:05,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:10,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:12,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:13,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:15,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:18,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:20,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:22,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:24,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:26,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:30,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:32,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:35,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:37,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:39,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:41,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:43,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:45,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:26:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:26:45,866 INFO L93 Difference]: Finished difference Result 6167 states and 9619 transitions. [2022-11-16 20:26:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 20:26:45,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 90 [2022-11-16 20:26:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:26:45,893 INFO L225 Difference]: With dead ends: 6167 [2022-11-16 20:26:45,893 INFO L226 Difference]: Without dead ends: 5255 [2022-11-16 20:26:45,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:26:45,899 INFO L413 NwaCegarLoop]: 3217 mSDtfsCounter, 5246 mSDsluCounter, 21213 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 1970 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5591 SdHoareTripleChecker+Valid, 24430 SdHoareTripleChecker+Invalid, 7287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1970 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:26:45,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5591 Valid, 24430 Invalid, 7287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1970 Valid, 5286 Invalid, 31 Unknown, 0 Unchecked, 192.9s Time] [2022-11-16 20:26:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2022-11-16 20:26:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 1591. [2022-11-16 20:26:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1178 states have (on average 1.4185059422750423) internal successors, (1671), 1217 states have internal predecessors, (1671), 327 states have call successors, (327), 84 states have call predecessors, (327), 85 states have return successors, (338), 317 states have call predecessors, (338), 327 states have call successors, (338) [2022-11-16 20:26:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2336 transitions. [2022-11-16 20:26:46,349 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2336 transitions. Word has length 90 [2022-11-16 20:26:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:26:46,349 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2336 transitions. [2022-11-16 20:26:46,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 20:26:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2336 transitions. [2022-11-16 20:26:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 20:26:46,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:26:46,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 20:26:46,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (11)] Forceful destruction successful, exit code 0 [2022-11-16 20:26:46,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:26:46,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:26:46,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:26:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash -875753156, now seen corresponding path program 1 times [2022-11-16 20:26:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:26:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33274050] [2022-11-16 20:26:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:26:46,573 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 [2022-11-16 20:26:46,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:26:46,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:26:46,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (12)] Waiting until timeout for monitored process [2022-11-16 20:26:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:26:47,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:26:47,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:26:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:26:47,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:26:47,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:26:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33274050] [2022-11-16 20:26:47,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33274050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:26:47,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:26:47,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:26:47,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546422317] [2022-11-16 20:26:47,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:26:47,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:26:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:26:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:26:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:26:47,243 INFO L87 Difference]: Start difference. First operand 1591 states and 2336 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 20:26:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:26:48,743 INFO L93 Difference]: Finished difference Result 2828 states and 4316 transitions. [2022-11-16 20:26:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:26:48,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2022-11-16 20:26:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:26:48,756 INFO L225 Difference]: With dead ends: 2828 [2022-11-16 20:26:48,757 INFO L226 Difference]: Without dead ends: 2826 [2022-11-16 20:26:48,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:26:48,758 INFO L413 NwaCegarLoop]: 2285 mSDtfsCounter, 1789 mSDsluCounter, 5556 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 7841 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:26:48,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 7841 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 20:26:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-11-16 20:26:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1587. [2022-11-16 20:26:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1175 states have (on average 1.4187234042553192) internal successors, (1667), 1213 states have internal predecessors, (1667), 326 states have call successors, (326), 84 states have call predecessors, (326), 85 states have return successors, (337), 316 states have call predecessors, (337), 326 states have call successors, (337) [2022-11-16 20:26:49,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2330 transitions. [2022-11-16 20:26:49,165 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2330 transitions. Word has length 99 [2022-11-16 20:26:49,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:26:49,165 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2330 transitions. [2022-11-16 20:26:49,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 20:26:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2330 transitions. [2022-11-16 20:26:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 20:26:49,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:26:49,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 20:26:49,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (12)] Forceful destruction successful, exit code 0 [2022-11-16 20:26:49,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:26:49,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:26:49,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:26:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1938229159, now seen corresponding path program 1 times [2022-11-16 20:26:49,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:26:49,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805117060] [2022-11-16 20:26:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:26:49,390 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 [2022-11-16 20:26:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:26:49,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:26:49,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (13)] Waiting until timeout for monitored process [2022-11-16 20:26:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:26:49,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 20:26:49,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:26:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 20:26:50,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:26:50,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:26:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805117060] [2022-11-16 20:26:50,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805117060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:26:50,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:26:50,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:26:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901551575] [2022-11-16 20:26:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:26:50,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:26:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:26:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:26:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:26:50,050 INFO L87 Difference]: Start difference. First operand 1587 states and 2330 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 20:26:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:26:52,266 INFO L93 Difference]: Finished difference Result 4499 states and 6831 transitions. [2022-11-16 20:26:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:26:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-16 20:26:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:26:52,279 INFO L225 Difference]: With dead ends: 4499 [2022-11-16 20:26:52,279 INFO L226 Difference]: Without dead ends: 2953 [2022-11-16 20:26:52,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:26:52,285 INFO L413 NwaCegarLoop]: 2094 mSDtfsCounter, 1176 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:26:52,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 5521 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 20:26:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-11-16 20:26:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1589. [2022-11-16 20:26:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1177 states have (on average 1.4171622769753611) internal successors, (1668), 1215 states have internal predecessors, (1668), 326 states have call successors, (326), 84 states have call predecessors, (326), 85 states have return successors, (337), 316 states have call predecessors, (337), 326 states have call successors, (337) [2022-11-16 20:26:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2331 transitions. [2022-11-16 20:26:52,652 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2331 transitions. Word has length 121 [2022-11-16 20:26:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:26:52,653 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2331 transitions. [2022-11-16 20:26:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 20:26:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2331 transitions. [2022-11-16 20:26:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 20:26:52,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:26:52,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 20:26:52,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (13)] Forceful destruction successful, exit code 0 [2022-11-16 20:26:52,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:26:52,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:26:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:26:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -575832018, now seen corresponding path program 1 times [2022-11-16 20:26:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:26:52,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187482961] [2022-11-16 20:26:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:26:52,876 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 [2022-11-16 20:26:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:26:52,877 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:26:52,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (14)] Waiting until timeout for monitored process [2022-11-16 20:26:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:26:53,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 20:26:53,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:26:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 20:26:53,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:26:53,795 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:26:53,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187482961] [2022-11-16 20:26:53,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187482961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:26:53,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:26:53,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:26:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166246657] [2022-11-16 20:26:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:26:53,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:26:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:26:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:26:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:26:53,797 INFO L87 Difference]: Start difference. First operand 1589 states and 2331 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 20:26:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:26:56,616 INFO L93 Difference]: Finished difference Result 4687 states and 7111 transitions. [2022-11-16 20:26:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:26:56,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-16 20:26:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:26:56,636 INFO L225 Difference]: With dead ends: 4687 [2022-11-16 20:26:56,636 INFO L226 Difference]: Without dead ends: 3139 [2022-11-16 20:26:56,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:26:56,641 INFO L413 NwaCegarLoop]: 2273 mSDtfsCounter, 1362 mSDsluCounter, 8165 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 10438 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:26:56,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 10438 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 20:26:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-16 20:26:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1599. [2022-11-16 20:26:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1185 states have (on average 1.4143459915611813) internal successors, (1676), 1223 states have internal predecessors, (1676), 326 states have call successors, (326), 84 states have call predecessors, (326), 87 states have return successors, (343), 318 states have call predecessors, (343), 326 states have call successors, (343) [2022-11-16 20:26:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2345 transitions. [2022-11-16 20:26:57,122 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2345 transitions. Word has length 138 [2022-11-16 20:26:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:26:57,122 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2345 transitions. [2022-11-16 20:26:57,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 20:26:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2345 transitions. [2022-11-16 20:26:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 20:26:57,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:26:57,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 20:26:57,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (14)] Forceful destruction successful, exit code 0 [2022-11-16 20:26:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:26:57,347 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:26:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:26:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash -285051848, now seen corresponding path program 2 times [2022-11-16 20:26:57,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:26:57,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773542900] [2022-11-16 20:26:57,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:26:57,348 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 [2022-11-16 20:26:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:26:57,349 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:26:57,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (15)] Waiting until timeout for monitored process [2022-11-16 20:26:57,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 20:26:57,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:26:57,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:26:57,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:26:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 20:26:57,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:26:57,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:26:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773542900] [2022-11-16 20:26:57,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773542900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:26:57,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:26:57,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:26:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971678163] [2022-11-16 20:26:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:26:57,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:26:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:26:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:26:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:26:57,977 INFO L87 Difference]: Start difference. First operand 1599 states and 2345 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 20:26:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:26:58,407 INFO L93 Difference]: Finished difference Result 3159 states and 4663 transitions. [2022-11-16 20:26:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:26:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-16 20:26:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:26:58,415 INFO L225 Difference]: With dead ends: 3159 [2022-11-16 20:26:58,416 INFO L226 Difference]: Without dead ends: 1601 [2022-11-16 20:26:58,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:26:58,421 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 0 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:26:58,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2701 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:26:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-11-16 20:26:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1599. [2022-11-16 20:26:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1185 states have (on average 1.409282700421941) internal successors, (1670), 1223 states have internal predecessors, (1670), 326 states have call successors, (326), 84 states have call predecessors, (326), 87 states have return successors, (343), 318 states have call predecessors, (343), 326 states have call successors, (343) [2022-11-16 20:26:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2339 transitions. [2022-11-16 20:26:58,934 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2339 transitions. Word has length 141 [2022-11-16 20:26:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:26:58,934 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2339 transitions. [2022-11-16 20:26:58,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 20:26:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2339 transitions. [2022-11-16 20:26:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 20:26:58,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:26:58,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 20:26:58,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (15)] Forceful destruction successful, exit code 0 [2022-11-16 20:26:59,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:26:59,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:26:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:26:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1782033489, now seen corresponding path program 1 times [2022-11-16 20:26:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:26:59,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882433222] [2022-11-16 20:26:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:26:59,164 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 [2022-11-16 20:26:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:26:59,165 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:26:59,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/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 (16)] Waiting until timeout for monitored process [2022-11-16 20:27:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:27:04,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-16 20:27:04,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:27:05,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 20:27:06,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:07,137 INFO L321 Elim1Store]: treesize reduction 127, result has 20.6 percent of original size [2022-11-16 20:27:07,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 48 [2022-11-16 20:27:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:08,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 20:27:08,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:08,887 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 20:27:08,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 20:27:09,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:27:09,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:27:09,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:27:09,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 81 [2022-11-16 20:27:11,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:11,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 37 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 100 [2022-11-16 20:27:11,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 20:27:11,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 20:27:12,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-16 20:27:12,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2022-11-16 20:27:12,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 20:27:13,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 79 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 138 [2022-11-16 20:27:14,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 94 [2022-11-16 20:27:14,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 96 [2022-11-16 20:27:15,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 79 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 118 [2022-11-16 20:27:15,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-16 20:27:15,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 46 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 80 [2022-11-16 20:27:15,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-16 20:27:15,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-16 20:27:15,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-16 20:27:16,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:16,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:16,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 20:27:16,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 36 [2022-11-16 20:27:16,910 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:27:16,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 20:27:16,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:16,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:16,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 20:27:16,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:16,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:16,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-11-16 20:27:17,037 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:27:17,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-16 20:27:17,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 20:27:17,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:17,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:17,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2022-11-16 20:27:17,154 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 20:27:17,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2022-11-16 20:27:19,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:19,977 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 20:27:19,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 20:27:20,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 21 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 69 [2022-11-16 20:27:20,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:20,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-11-16 20:27:24,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 20:27:24,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 20:27:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2022-11-16 20:27:24,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:24,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 21 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 69 [2022-11-16 20:27:30,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 508 treesize of output 328 [2022-11-16 20:27:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:32,358 INFO L321 Elim1Store]: treesize reduction 1228, result has 7.0 percent of original size [2022-11-16 20:27:32,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 7 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 184 case distinctions, treesize of input 427 treesize of output 279 [2022-11-16 20:27:32,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 243 [2022-11-16 20:27:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:27:32,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 121 [2022-11-16 20:27:32,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 82 [2022-11-16 20:27:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 20:27:33,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:27:33,430 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1084 (Array (_ BitVec 64) (_ BitVec 8))) (v_ArrVal_1083 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1085 (Array (_ BitVec 64) (_ BitVec 64)))) (bvsle ((_ extract 31 0) (let ((.cse2 (bvadd |c_ULTIMATE.start_slip_open_~sl~12#1.offset| (_ bv12 64)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1084) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1083) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse2))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_slip_open_~tty#1.base| v_ArrVal_1085) |c_ULTIMATE.start_slip_open_~sl~12#1.base|) .cse2))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv119 64))) (select .cse0 (bvadd (_ bv118 64) .cse1))) (select .cse0 (bvadd .cse1 (_ bv117 64)))) (select .cse0 (bvadd (_ bv116 64) .cse1))) (select .cse0 (bvadd .cse1 (_ bv115 64)))) (select .cse0 (bvadd .cse1 (_ bv114 64)))) (select .cse0 (bvadd (_ bv113 64) .cse1))) (select .cse0 (bvadd (_ bv112 64) .cse1)))))) (_ bv0 32))) is different from false [2022-11-16 20:27:33,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:27:33,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882433222] [2022-11-16 20:27:33,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882433222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:27:33,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2012922256] [2022-11-16 20:27:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:27:33,468 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:27:33,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:27:33,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:27:33,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_608e2a01-7b61-445f-b9d1-28d0f467c8f4/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process