./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI --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 71c9ad4d22d8803e8ce68978dcece5a0c38af93fd6faccf6f5517fe451659fc5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:02:31,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:02:31,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:02:31,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:02:31,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:02:31,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:02:31,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:02:31,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:02:31,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:02:31,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:02:31,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:02:31,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:02:31,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:02:31,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:02:31,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:02:31,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:02:31,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:02:31,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:02:31,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:02:31,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:02:31,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:02:31,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:02:31,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:02:31,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:02:31,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:02:31,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:02:31,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:02:31,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:02:31,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:02:31,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:02:31,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:02:31,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:02:31,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:02:31,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:02:31,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:02:31,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:02:31,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:02:31,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:02:31,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:02:31,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:02:31,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:02:31,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:02:31,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:02:31,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:02:31,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:02:31,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:02:31,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:02:31,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:02:31,732 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:02:31,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:02:31,732 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:02:31,732 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:02:31,733 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:02:31,734 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:02:31,734 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:02:31,734 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:02:31,734 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:02:31,735 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:02:31,735 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:02:31,735 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:02:31,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:02:31,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:02:31,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:02:31,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:02:31,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:02:31,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:02:31,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:02:31,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:02:31,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:02:31,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:02:31,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:02:31,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:31,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:02:31,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:02:31,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:02:31,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:02:31,740 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:02:31,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:02:31,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:02:31,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:02:31,741 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_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c9ad4d22d8803e8ce68978dcece5a0c38af93fd6faccf6f5517fe451659fc5 [2022-11-03 02:02:32,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:02:32,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:02:32,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:02:32,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:02:32,099 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:02:32,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c [2022-11-03 02:02:32,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/7662aec71/8d4a4fe3acd64cdd863ee38f700a80ef/FLAG69208aad4 [2022-11-03 02:02:32,730 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:02:32,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c [2022-11-03 02:02:32,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/7662aec71/8d4a4fe3acd64cdd863ee38f700a80ef/FLAG69208aad4 [2022-11-03 02:02:33,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/7662aec71/8d4a4fe3acd64cdd863ee38f700a80ef [2022-11-03 02:02:33,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:02:33,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:02:33,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:33,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:02:33,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:02:33,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c0228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33, skipping insertion in model container [2022-11-03 02:02:33,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:02:33,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:02:33,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c[1107,1120] [2022-11-03 02:02:33,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:33,429 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:02:33,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c[1107,1120] [2022-11-03 02:02:33,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:33,541 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:02:33,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33 WrapperNode [2022-11-03 02:02:33,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:33,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:33,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:02:33,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:02:33,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,608 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 458 [2022-11-03 02:02:33,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:33,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:02:33,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:02:33,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:02:33,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:02:33,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:02:33,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:02:33,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:02:33,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (1/1) ... [2022-11-03 02:02:33,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:33,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:02:33,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:02:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:02:33,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:02:33,994 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:02:34,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:02:34,627 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:02:35,146 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:02:35,146 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:02:35,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:35 BoogieIcfgContainer [2022-11-03 02:02:35,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:02:35,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:02:35,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:02:35,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:02:35,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:33" (1/3) ... [2022-11-03 02:02:35,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5879277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:35, skipping insertion in model container [2022-11-03 02:02:35,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:33" (2/3) ... [2022-11-03 02:02:35,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5879277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:35, skipping insertion in model container [2022-11-03 02:02:35,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:35" (3/3) ... [2022-11-03 02:02:35,162 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b08.c [2022-11-03 02:02:35,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:02:35,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:02:35,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:02:35,272 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;@6c6828ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:02:35,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:02:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:02:35,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:35,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:02:35,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:35,301 INFO L85 PathProgramCache]: Analyzing trace with hash 8806567, now seen corresponding path program 1 times [2022-11-03 02:02:35,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:35,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45989660] [2022-11-03 02:02:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:35,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:02:36,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:02:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:02:36,874 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:02:36,880 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:02:36,881 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:02:36,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:02:36,888 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:02:36,892 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:02:36,931 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:02:36,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:02:36 BoogieIcfgContainer [2022-11-03 02:02:36,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:02:36,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:02:36,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:02:36,949 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:02:36,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:35" (3/4) ... [2022-11-03 02:02:36,952 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:02:36,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:02:36,954 INFO L158 Benchmark]: Toolchain (without parser) took 3911.37ms. Allocated memory was 92.3MB in the beginning and 167.8MB in the end (delta: 75.5MB). Free memory was 52.4MB in the beginning and 124.4MB in the end (delta: -72.0MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-11-03 02:02:36,957 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:02:36,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.11ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 52.2MB in the beginning and 90.2MB in the end (delta: -38.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:02:36,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.01ms. Allocated memory is still 121.6MB. Free memory was 90.2MB in the beginning and 86.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:02:36,967 INFO L158 Benchmark]: Boogie Preprocessor took 65.14ms. Allocated memory is still 121.6MB. Free memory was 86.0MB in the beginning and 83.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:02:36,968 INFO L158 Benchmark]: RCFGBuilder took 1473.94ms. Allocated memory is still 121.6MB. Free memory was 83.4MB in the beginning and 49.7MB in the end (delta: 33.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2022-11-03 02:02:36,970 INFO L158 Benchmark]: TraceAbstraction took 1794.69ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 49.0MB in the beginning and 124.4MB in the end (delta: -75.4MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2022-11-03 02:02:36,970 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 167.8MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:02:36,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.11ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 52.2MB in the beginning and 90.2MB in the end (delta: -38.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.01ms. Allocated memory is still 121.6MB. Free memory was 90.2MB in the beginning and 86.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.14ms. Allocated memory is still 121.6MB. Free memory was 86.0MB in the beginning and 83.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1473.94ms. Allocated memory is still 121.6MB. Free memory was 83.4MB in the beginning and 49.7MB in the end (delta: 33.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1794.69ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 49.0MB in the beginning and 124.4MB in the end (delta: -75.4MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 167.8MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 294, overapproximation of bitwiseAnd at line 103. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 20); [L32] const SORT_6 msb_SORT_6 = (SORT_6)1 << (20 - 1); [L34] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 3); [L35] const SORT_9 msb_SORT_9 = (SORT_9)1 << (3 - 1); [L37] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 32); [L38] const SORT_13 msb_SORT_13 = (SORT_13)1 << (32 - 1); [L40] const SORT_90 mask_SORT_90 = (SORT_90)-1 >> (sizeof(SORT_90) * 8 - 4); [L41] const SORT_90 msb_SORT_90 = (SORT_90)1 << (4 - 1); [L43] const SORT_6 var_7 = 196596; [L44] const SORT_6 var_8 = 829275; [L45] const SORT_9 var_10 = 0; [L46] const SORT_13 var_15 = 6; [L47] const SORT_13 var_20 = 5; [L48] const SORT_13 var_25 = 4; [L49] const SORT_13 var_30 = 3; [L50] const SORT_13 var_35 = 2; [L51] const SORT_13 var_40 = 1; [L52] const SORT_13 var_45 = 0; [L53] const SORT_6 var_48 = 1047464; [L54] const SORT_6 var_60 = 1048430; [L55] const SORT_6 var_70 = 1046202; [L56] const SORT_6 var_78 = 692223; [L57] const SORT_6 var_84 = 236898; [L58] const SORT_6 var_88 = 522618; [L59] const SORT_1 var_96 = 1; [L60] const SORT_1 var_107 = 0; [L62] SORT_1 input_2; [L63] SORT_3 input_4; [L64] SORT_1 input_5; [L65] SORT_6 input_18; [L66] SORT_6 input_23; [L67] SORT_6 input_28; [L68] SORT_6 input_33; [L69] SORT_6 input_38; [L70] SORT_6 input_43; [L71] SORT_6 input_50; [L72] SORT_6 input_52; [L73] SORT_6 input_54; [L74] SORT_6 input_56; [L75] SORT_6 input_58; [L76] SORT_6 input_62; [L77] SORT_6 input_64; [L78] SORT_6 input_66; [L79] SORT_6 input_68; [L80] SORT_6 input_72; [L81] SORT_6 input_74; [L82] SORT_6 input_76; [L83] SORT_6 input_80; [L84] SORT_6 input_82; [L85] SORT_6 input_86; [L86] SORT_3 input_100; [L87] SORT_90 input_102; [L88] SORT_90 input_104; [L89] SORT_1 input_113; [L91] SORT_9 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L92] SORT_1 state_108 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_9 init_12_arg_1 = var_10; [L95] state_11 = init_12_arg_1 [L96] SORT_1 init_109_arg_1 = var_107; [L97] state_108 = init_109_arg_1 VAL [init_109_arg_1=0, init_12_arg_1=0, mask_SORT_1=1, mask_SORT_13=4294967295, mask_SORT_3=255, mask_SORT_6=4294967295, mask_SORT_9=7, mask_SORT_90=15, msb_SORT_1=1, msb_SORT_13=2147483648, msb_SORT_3=128, msb_SORT_6=524288, msb_SORT_9=4, msb_SORT_90=8, state_108=0, state_11=0, var_10=0, var_107=0, var_15=6, var_20=5, var_25=4, var_30=3, var_35=2, var_40=1, var_45=0, var_48=1047464, var_60=1048430, var_7=196596, var_70=1046202, var_78=692223, var_8=829275, var_84=236898, var_88=522618, var_96=1] [L100] input_2 = __VERIFIER_nondet_uchar() [L101] input_4 = __VERIFIER_nondet_uchar() [L102] input_5 = __VERIFIER_nondet_uchar() [L103] input_5 = input_5 & mask_SORT_1 [L104] input_18 = __VERIFIER_nondet_uint() [L105] input_23 = __VERIFIER_nondet_uint() [L106] input_28 = __VERIFIER_nondet_uint() [L107] input_33 = __VERIFIER_nondet_uint() [L108] input_38 = __VERIFIER_nondet_uint() [L109] input_43 = __VERIFIER_nondet_uint() [L110] input_50 = __VERIFIER_nondet_uint() [L111] input_52 = __VERIFIER_nondet_uint() [L112] input_54 = __VERIFIER_nondet_uint() [L113] input_56 = __VERIFIER_nondet_uint() [L114] input_58 = __VERIFIER_nondet_uint() [L115] input_62 = __VERIFIER_nondet_uint() [L116] input_64 = __VERIFIER_nondet_uint() [L117] input_66 = __VERIFIER_nondet_uint() [L118] input_68 = __VERIFIER_nondet_uint() [L119] input_72 = __VERIFIER_nondet_uint() [L120] input_74 = __VERIFIER_nondet_uint() [L121] input_76 = __VERIFIER_nondet_uint() [L122] input_80 = __VERIFIER_nondet_uint() [L123] input_82 = __VERIFIER_nondet_uint() [L124] input_86 = __VERIFIER_nondet_uint() [L125] input_100 = __VERIFIER_nondet_uchar() [L126] input_102 = __VERIFIER_nondet_uchar() [L127] input_104 = __VERIFIER_nondet_uchar() [L128] input_113 = __VERIFIER_nondet_uchar() [L131] SORT_9 var_44_arg_0 = state_11; [L132] var_44_arg_0 = var_44_arg_0 & mask_SORT_9 [L133] SORT_13 var_44 = var_44_arg_0; [L134] SORT_13 var_46_arg_0 = var_44; [L135] SORT_13 var_46_arg_1 = var_45; [L136] SORT_1 var_46 = var_46_arg_0 == var_46_arg_1; [L137] SORT_9 var_39_arg_0 = state_11; [L138] var_39_arg_0 = var_39_arg_0 & mask_SORT_9 [L139] SORT_13 var_39 = var_39_arg_0; [L140] SORT_13 var_41_arg_0 = var_39; [L141] SORT_13 var_41_arg_1 = var_40; [L142] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L143] SORT_9 var_34_arg_0 = state_11; [L144] var_34_arg_0 = var_34_arg_0 & mask_SORT_9 [L145] SORT_13 var_34 = var_34_arg_0; [L146] SORT_13 var_36_arg_0 = var_34; [L147] SORT_13 var_36_arg_1 = var_35; [L148] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L149] SORT_9 var_29_arg_0 = state_11; [L150] var_29_arg_0 = var_29_arg_0 & mask_SORT_9 [L151] SORT_13 var_29 = var_29_arg_0; [L152] SORT_13 var_31_arg_0 = var_29; [L153] SORT_13 var_31_arg_1 = var_30; [L154] SORT_1 var_31 = var_31_arg_0 == var_31_arg_1; [L155] SORT_9 var_24_arg_0 = state_11; [L156] var_24_arg_0 = var_24_arg_0 & mask_SORT_9 [L157] SORT_13 var_24 = var_24_arg_0; [L158] SORT_13 var_26_arg_0 = var_24; [L159] SORT_13 var_26_arg_1 = var_25; [L160] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L161] SORT_9 var_19_arg_0 = state_11; [L162] var_19_arg_0 = var_19_arg_0 & mask_SORT_9 [L163] SORT_13 var_19 = var_19_arg_0; [L164] SORT_13 var_21_arg_0 = var_19; [L165] SORT_13 var_21_arg_1 = var_20; [L166] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L167] SORT_9 var_14_arg_0 = state_11; [L168] var_14_arg_0 = var_14_arg_0 & mask_SORT_9 [L169] SORT_13 var_14 = var_14_arg_0; [L170] SORT_13 var_16_arg_0 = var_14; [L171] SORT_13 var_16_arg_1 = var_15; [L172] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L173] SORT_1 var_17_arg_0 = var_16; [L174] SORT_6 var_17_arg_1 = var_8; [L175] SORT_6 var_17_arg_2 = var_7; [L176] EXPR var_17_arg_0 ? var_17_arg_1 : var_17_arg_2 [L176] SORT_6 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L177] SORT_1 var_22_arg_0 = var_21; [L178] SORT_6 var_22_arg_1 = input_18; [L179] SORT_6 var_22_arg_2 = var_17; [L180] EXPR var_22_arg_0 ? var_22_arg_1 : var_22_arg_2 [L180] SORT_6 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L181] SORT_1 var_27_arg_0 = var_26; [L182] SORT_6 var_27_arg_1 = input_23; [L183] SORT_6 var_27_arg_2 = var_22; [L184] EXPR var_27_arg_0 ? var_27_arg_1 : var_27_arg_2 [L184] SORT_6 var_27 = var_27_arg_0 ? var_27_arg_1 : var_27_arg_2; [L185] SORT_1 var_32_arg_0 = var_31; [L186] SORT_6 var_32_arg_1 = input_28; [L187] SORT_6 var_32_arg_2 = var_27; [L188] EXPR var_32_arg_0 ? var_32_arg_1 : var_32_arg_2 [L188] SORT_6 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L189] SORT_1 var_37_arg_0 = var_36; [L190] SORT_6 var_37_arg_1 = input_33; [L191] SORT_6 var_37_arg_2 = var_32; [L192] EXPR var_37_arg_0 ? var_37_arg_1 : var_37_arg_2 [L192] SORT_6 var_37 = var_37_arg_0 ? var_37_arg_1 : var_37_arg_2; [L193] SORT_1 var_42_arg_0 = var_41; [L194] SORT_6 var_42_arg_1 = input_38; [L195] SORT_6 var_42_arg_2 = var_37; [L196] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L196] SORT_6 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L197] SORT_1 var_47_arg_0 = var_46; [L198] SORT_6 var_47_arg_1 = input_43; [L199] SORT_6 var_47_arg_2 = var_42; [L200] EXPR var_47_arg_0 ? var_47_arg_1 : var_47_arg_2 [L200] SORT_6 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L201] SORT_1 var_49_arg_0 = var_21; [L202] SORT_6 var_49_arg_1 = var_48; [L203] SORT_6 var_49_arg_2 = var_47; [L204] EXPR var_49_arg_0 ? var_49_arg_1 : var_49_arg_2 [L204] SORT_6 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L205] SORT_1 var_51_arg_0 = var_26; [L206] SORT_6 var_51_arg_1 = input_50; [L207] SORT_6 var_51_arg_2 = var_49; [L208] EXPR var_51_arg_0 ? var_51_arg_1 : var_51_arg_2 [L208] SORT_6 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L209] SORT_1 var_53_arg_0 = var_31; [L210] SORT_6 var_53_arg_1 = input_52; [L211] SORT_6 var_53_arg_2 = var_51; [L212] EXPR var_53_arg_0 ? var_53_arg_1 : var_53_arg_2 [L212] SORT_6 var_53 = var_53_arg_0 ? var_53_arg_1 : var_53_arg_2; [L213] SORT_1 var_55_arg_0 = var_36; [L214] SORT_6 var_55_arg_1 = input_54; [L215] SORT_6 var_55_arg_2 = var_53; [L216] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L216] SORT_6 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L217] SORT_1 var_57_arg_0 = var_41; [L218] SORT_6 var_57_arg_1 = input_56; [L219] SORT_6 var_57_arg_2 = var_55; [L220] EXPR var_57_arg_0 ? var_57_arg_1 : var_57_arg_2 [L220] SORT_6 var_57 = var_57_arg_0 ? var_57_arg_1 : var_57_arg_2; [L221] SORT_1 var_59_arg_0 = var_46; [L222] SORT_6 var_59_arg_1 = input_58; [L223] SORT_6 var_59_arg_2 = var_57; [L224] EXPR var_59_arg_0 ? var_59_arg_1 : var_59_arg_2 [L224] SORT_6 var_59 = var_59_arg_0 ? var_59_arg_1 : var_59_arg_2; [L225] SORT_1 var_61_arg_0 = var_26; [L226] SORT_6 var_61_arg_1 = var_60; [L227] SORT_6 var_61_arg_2 = var_59; [L228] EXPR var_61_arg_0 ? var_61_arg_1 : var_61_arg_2 [L228] SORT_6 var_61 = var_61_arg_0 ? var_61_arg_1 : var_61_arg_2; [L229] SORT_1 var_63_arg_0 = var_31; [L230] SORT_6 var_63_arg_1 = input_62; [L231] SORT_6 var_63_arg_2 = var_61; [L232] EXPR var_63_arg_0 ? var_63_arg_1 : var_63_arg_2 [L232] SORT_6 var_63 = var_63_arg_0 ? var_63_arg_1 : var_63_arg_2; [L233] SORT_1 var_65_arg_0 = var_36; [L234] SORT_6 var_65_arg_1 = input_64; [L235] SORT_6 var_65_arg_2 = var_63; [L236] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L236] SORT_6 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L237] SORT_1 var_67_arg_0 = var_41; [L238] SORT_6 var_67_arg_1 = input_66; [L239] SORT_6 var_67_arg_2 = var_65; [L240] EXPR var_67_arg_0 ? var_67_arg_1 : var_67_arg_2 [L240] SORT_6 var_67 = var_67_arg_0 ? var_67_arg_1 : var_67_arg_2; [L241] SORT_1 var_69_arg_0 = var_46; [L242] SORT_6 var_69_arg_1 = input_68; [L243] SORT_6 var_69_arg_2 = var_67; [L244] EXPR var_69_arg_0 ? var_69_arg_1 : var_69_arg_2 [L244] SORT_6 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L245] SORT_1 var_71_arg_0 = var_31; [L246] SORT_6 var_71_arg_1 = var_70; [L247] SORT_6 var_71_arg_2 = var_69; [L248] EXPR var_71_arg_0 ? var_71_arg_1 : var_71_arg_2 [L248] SORT_6 var_71 = var_71_arg_0 ? var_71_arg_1 : var_71_arg_2; [L249] SORT_1 var_73_arg_0 = var_36; [L250] SORT_6 var_73_arg_1 = input_72; [L251] SORT_6 var_73_arg_2 = var_71; [L252] EXPR var_73_arg_0 ? var_73_arg_1 : var_73_arg_2 [L252] SORT_6 var_73 = var_73_arg_0 ? var_73_arg_1 : var_73_arg_2; [L253] SORT_1 var_75_arg_0 = var_41; [L254] SORT_6 var_75_arg_1 = input_74; [L255] SORT_6 var_75_arg_2 = var_73; [L256] EXPR var_75_arg_0 ? var_75_arg_1 : var_75_arg_2 [L256] SORT_6 var_75 = var_75_arg_0 ? var_75_arg_1 : var_75_arg_2; [L257] SORT_1 var_77_arg_0 = var_46; [L258] SORT_6 var_77_arg_1 = input_76; [L259] SORT_6 var_77_arg_2 = var_75; [L260] EXPR var_77_arg_0 ? var_77_arg_1 : var_77_arg_2 [L260] SORT_6 var_77 = var_77_arg_0 ? var_77_arg_1 : var_77_arg_2; [L261] SORT_1 var_79_arg_0 = var_36; [L262] SORT_6 var_79_arg_1 = var_78; [L263] SORT_6 var_79_arg_2 = var_77; [L264] EXPR var_79_arg_0 ? var_79_arg_1 : var_79_arg_2 [L264] SORT_6 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L265] SORT_1 var_81_arg_0 = var_41; [L266] SORT_6 var_81_arg_1 = input_80; [L267] SORT_6 var_81_arg_2 = var_79; [L268] EXPR var_81_arg_0 ? var_81_arg_1 : var_81_arg_2 [L268] SORT_6 var_81 = var_81_arg_0 ? var_81_arg_1 : var_81_arg_2; [L269] SORT_1 var_83_arg_0 = var_46; [L270] SORT_6 var_83_arg_1 = input_82; [L271] SORT_6 var_83_arg_2 = var_81; [L272] EXPR var_83_arg_0 ? var_83_arg_1 : var_83_arg_2 [L272] SORT_6 var_83 = var_83_arg_0 ? var_83_arg_1 : var_83_arg_2; [L273] SORT_1 var_85_arg_0 = var_41; [L274] SORT_6 var_85_arg_1 = var_84; [L275] SORT_6 var_85_arg_2 = var_83; [L276] EXPR var_85_arg_0 ? var_85_arg_1 : var_85_arg_2 [L276] SORT_6 var_85 = var_85_arg_0 ? var_85_arg_1 : var_85_arg_2; [L277] SORT_1 var_87_arg_0 = var_46; [L278] SORT_6 var_87_arg_1 = input_86; [L279] SORT_6 var_87_arg_2 = var_85; [L280] EXPR var_87_arg_0 ? var_87_arg_1 : var_87_arg_2 [L280] SORT_6 var_87 = var_87_arg_0 ? var_87_arg_1 : var_87_arg_2; [L281] SORT_1 var_89_arg_0 = var_46; [L282] SORT_6 var_89_arg_1 = var_88; [L283] SORT_6 var_89_arg_2 = var_87; [L284] EXPR var_89_arg_0 ? var_89_arg_1 : var_89_arg_2 [L284] SORT_6 var_89 = var_89_arg_0 ? var_89_arg_1 : var_89_arg_2; [L285] SORT_6 var_91_arg_0 = var_89; [L286] SORT_90 var_91 = var_91_arg_0 >> 0; [L287] SORT_90 var_92_arg_0 = var_91; [L288] var_92_arg_0 = var_92_arg_0 & mask_SORT_90 [L289] SORT_13 var_92 = var_92_arg_0; [L290] SORT_13 var_93_arg_0 = var_92; [L291] SORT_13 var_93_arg_1 = var_45; [L292] SORT_1 var_93 = var_93_arg_0 != var_93_arg_1; [L293] SORT_1 var_97_arg_0 = var_93; [L294] SORT_1 var_97 = ~var_97_arg_0; [L295] SORT_1 var_98_arg_0 = var_96; [L296] SORT_1 var_98_arg_1 = var_97; [L297] SORT_1 var_98 = var_98_arg_0 & var_98_arg_1; [L298] var_98 = var_98 & mask_SORT_1 [L299] SORT_1 bad_99_arg_0 = var_98; [L300] CALL __VERIFIER_assert(!(bad_99_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:02:37,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI --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 71c9ad4d22d8803e8ce68978dcece5a0c38af93fd6faccf6f5517fe451659fc5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:02:39,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:02:39,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:02:39,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:02:39,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:02:39,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:02:39,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:02:39,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:02:39,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:02:39,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:02:39,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:02:39,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:02:39,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:02:39,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:02:39,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:02:39,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:02:39,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:02:39,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:02:39,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:02:39,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:02:39,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:02:39,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:02:39,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:02:39,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:02:39,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:02:39,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:02:39,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:02:39,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:02:39,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:02:39,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:02:39,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:02:39,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:02:39,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:02:39,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:02:39,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:02:39,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:02:39,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:02:39,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:02:39,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:02:39,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:02:39,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:02:39,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:02:39,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:02:39,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:02:39,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:02:39,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:02:39,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:02:39,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:02:39,447 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:02:39,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:02:39,448 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:02:39,448 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:02:39,449 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:02:39,449 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:02:39,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:02:39,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:02:39,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:02:39,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:02:39,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:02:39,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:02:39,452 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:02:39,452 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:02:39,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:02:39,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:02:39,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:02:39,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:02:39,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:02:39,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:02:39,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:39,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:02:39,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:02:39,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:02:39,454 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:02:39,454 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:02:39,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:02:39,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:02:39,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:02:39,455 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_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c9ad4d22d8803e8ce68978dcece5a0c38af93fd6faccf6f5517fe451659fc5 [2022-11-03 02:02:39,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:02:39,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:02:39,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:02:39,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:02:39,943 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:02:39,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c [2022-11-03 02:02:40,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/0743192cf/90f6959c832c41a3917b7967c1c981a6/FLAG634af2777 [2022-11-03 02:02:40,639 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:02:40,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c [2022-11-03 02:02:40,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/0743192cf/90f6959c832c41a3917b7967c1c981a6/FLAG634af2777 [2022-11-03 02:02:41,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/data/0743192cf/90f6959c832c41a3917b7967c1c981a6 [2022-11-03 02:02:41,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:02:41,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:02:41,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:41,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:02:41,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:02:41,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b1602d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41, skipping insertion in model container [2022-11-03 02:02:41,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:02:41,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:02:41,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c[1107,1120] [2022-11-03 02:02:41,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:41,416 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:02:41,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b08.c[1107,1120] [2022-11-03 02:02:41,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:41,522 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:02:41,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41 WrapperNode [2022-11-03 02:02:41,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:41,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:41,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:02:41,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:02:41,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,597 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 458 [2022-11-03 02:02:41,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:41,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:02:41,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:02:41,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:02:41,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:02:41,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:02:41,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:02:41,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:02:41,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (1/1) ... [2022-11-03 02:02:41,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:41,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:41,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:02:41,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:02:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:02:41,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:02:41,986 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:02:41,988 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:02:42,563 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:02:42,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:02:42,572 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:02:42,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:42 BoogieIcfgContainer [2022-11-03 02:02:42,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:02:42,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:02:42,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:02:42,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:02:42,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:41" (1/3) ... [2022-11-03 02:02:42,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2010114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:42, skipping insertion in model container [2022-11-03 02:02:42,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:41" (2/3) ... [2022-11-03 02:02:42,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2010114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:42, skipping insertion in model container [2022-11-03 02:02:42,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:42" (3/3) ... [2022-11-03 02:02:42,583 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b08.c [2022-11-03 02:02:42,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:02:42,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:02:42,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:02:42,661 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;@27ee6f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:02:42,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:02:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 74 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:42,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:42,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:42,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash -96594061, now seen corresponding path program 1 times [2022-11-03 02:02:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650790867] [2022-11-03 02:02:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:42,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:42,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:42,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:02:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:43,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:43,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:43,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:43,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:43,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650790867] [2022-11-03 02:02:43,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650790867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:43,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:43,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:02:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931730704] [2022-11-03 02:02:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:43,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:02:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:02:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:02:43,268 INFO L87 Difference]: Start difference. First operand has 75 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 74 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:43,411 INFO L93 Difference]: Finished difference Result 281 states and 419 transitions. [2022-11-03 02:02:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:02:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:43,430 INFO L225 Difference]: With dead ends: 281 [2022-11-03 02:02:43,431 INFO L226 Difference]: Without dead ends: 208 [2022-11-03 02:02:43,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:43,441 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 296 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:43,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 395 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-03 02:02:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 73. [2022-11-03 02:02:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 72 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 105 transitions. [2022-11-03 02:02:43,517 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 105 transitions. Word has length 61 [2022-11-03 02:02:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:43,518 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 105 transitions. [2022-11-03 02:02:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 105 transitions. [2022-11-03 02:02:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:43,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:43,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:43,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:43,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:43,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash 337135025, now seen corresponding path program 1 times [2022-11-03 02:02:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:43,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409890534] [2022-11-03 02:02:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:43,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:43,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:43,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:02:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:43,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:43,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:44,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:44,031 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:44,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409890534] [2022-11-03 02:02:44,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409890534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:44,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:44,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448537744] [2022-11-03 02:02:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:44,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:44,035 INFO L87 Difference]: Start difference. First operand 73 states and 105 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:44,147 INFO L93 Difference]: Finished difference Result 278 states and 404 transitions. [2022-11-03 02:02:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:44,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:44,149 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:44,149 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:44,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:44,152 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 390 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:44,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 584 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 75. [2022-11-03 02:02:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.445945945945946) internal successors, (107), 74 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 107 transitions. [2022-11-03 02:02:44,160 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 107 transitions. Word has length 61 [2022-11-03 02:02:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:44,161 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 107 transitions. [2022-11-03 02:02:44,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 107 transitions. [2022-11-03 02:02:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:44,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:44,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:44,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:44,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:44,386 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:44,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash 377809775, now seen corresponding path program 1 times [2022-11-03 02:02:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:44,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692202190] [2022-11-03 02:02:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:44,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:44,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:44,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:44,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:02:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:44,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:44,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:44,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:44,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:44,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692202190] [2022-11-03 02:02:44,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692202190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:44,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:44,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809238435] [2022-11-03 02:02:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:44,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:44,706 INFO L87 Difference]: Start difference. First operand 75 states and 107 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:44,818 INFO L93 Difference]: Finished difference Result 278 states and 403 transitions. [2022-11-03 02:02:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:44,820 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:44,820 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:44,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:44,822 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 383 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:44,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 577 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 77. [2022-11-03 02:02:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 76 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2022-11-03 02:02:44,829 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 61 [2022-11-03 02:02:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:44,830 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2022-11-03 02:02:44,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2022-11-03 02:02:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:44,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:44,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:44,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:45,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1253828781, now seen corresponding path program 1 times [2022-11-03 02:02:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:45,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625070898] [2022-11-03 02:02:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:45,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:45,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:45,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:45,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:02:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:45,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:45,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:45,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:45,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:45,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625070898] [2022-11-03 02:02:45,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625070898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:45,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:45,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:45,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896710212] [2022-11-03 02:02:45,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:45,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:45,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:45,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:45,321 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:45,452 INFO L93 Difference]: Finished difference Result 278 states and 402 transitions. [2022-11-03 02:02:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:45,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:45,456 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:45,456 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:45,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:45,464 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 376 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:45,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 570 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 79. [2022-11-03 02:02:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2022-11-03 02:02:45,471 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 61 [2022-11-03 02:02:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:45,472 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2022-11-03 02:02:45,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2022-11-03 02:02:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:45,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:45,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:45,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:45,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:45,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1502798485, now seen corresponding path program 1 times [2022-11-03 02:02:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:45,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835272855] [2022-11-03 02:02:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:45,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:45,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:45,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:02:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:45,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:45,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:45,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:45,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:45,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835272855] [2022-11-03 02:02:45,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835272855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:45,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:45,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:45,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184441092] [2022-11-03 02:02:45,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:45,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:45,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:45,968 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:46,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:46,072 INFO L93 Difference]: Finished difference Result 278 states and 401 transitions. [2022-11-03 02:02:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:46,074 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:46,074 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:46,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:46,075 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 369 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:46,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 563 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 81. [2022-11-03 02:02:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4125) internal successors, (113), 80 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2022-11-03 02:02:46,081 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 61 [2022-11-03 02:02:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:46,081 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2022-11-03 02:02:46,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2022-11-03 02:02:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:46,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:46,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:46,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:46,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:46,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:46,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1983878743, now seen corresponding path program 1 times [2022-11-03 02:02:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:46,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763907180] [2022-11-03 02:02:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:46,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:46,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:46,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:02:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:46,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:46,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:46,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:46,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:46,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763907180] [2022-11-03 02:02:46,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763907180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:46,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:46,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998467271] [2022-11-03 02:02:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:46,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:46,539 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:46,642 INFO L93 Difference]: Finished difference Result 278 states and 400 transitions. [2022-11-03 02:02:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:46,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:46,644 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:46,644 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:46,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:46,645 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 362 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:46,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 556 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 83. [2022-11-03 02:02:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 115 transitions. [2022-11-03 02:02:46,651 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 115 transitions. Word has length 61 [2022-11-03 02:02:46,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:46,651 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 115 transitions. [2022-11-03 02:02:46,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 115 transitions. [2022-11-03 02:02:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:46,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:46,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:46,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:46,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -44716697, now seen corresponding path program 1 times [2022-11-03 02:02:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:46,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000878025] [2022-11-03 02:02:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:46,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:46,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:46,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:46,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:02:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:47,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:47,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:47,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:47,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000878025] [2022-11-03 02:02:47,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000878025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:47,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:47,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450270405] [2022-11-03 02:02:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:47,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:47,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:47,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:47,181 INFO L87 Difference]: Start difference. First operand 83 states and 115 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:47,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:47,273 INFO L93 Difference]: Finished difference Result 278 states and 399 transitions. [2022-11-03 02:02:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:47,276 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:47,276 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:47,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:47,277 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 345 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:47,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 555 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 89. [2022-11-03 02:02:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 88 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2022-11-03 02:02:47,295 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 61 [2022-11-03 02:02:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:47,296 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2022-11-03 02:02:47,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2022-11-03 02:02:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:47,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:47,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:47,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:47,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:47,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash 203429797, now seen corresponding path program 1 times [2022-11-03 02:02:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:47,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780151492] [2022-11-03 02:02:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:47,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:47,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:47,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:47,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:02:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:47,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:47,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:47,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:47,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:47,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780151492] [2022-11-03 02:02:47,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780151492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:47,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:47,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:47,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874179543] [2022-11-03 02:02:47,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:47,773 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:47,873 INFO L93 Difference]: Finished difference Result 278 states and 398 transitions. [2022-11-03 02:02:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:47,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:47,874 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:47,875 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:47,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:47,876 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 338 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:47,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 548 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 91. [2022-11-03 02:02:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2022-11-03 02:02:47,880 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 61 [2022-11-03 02:02:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:47,880 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2022-11-03 02:02:47,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2022-11-03 02:02:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:47,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:47,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:47,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:48,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:48,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1168377501, now seen corresponding path program 1 times [2022-11-03 02:02:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:48,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531000136] [2022-11-03 02:02:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:48,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:48,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:48,098 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:48,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:02:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:48,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:48,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:48,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:48,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:48,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531000136] [2022-11-03 02:02:48,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531000136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:48,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:48,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:48,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441824166] [2022-11-03 02:02:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:48,394 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:48,497 INFO L93 Difference]: Finished difference Result 278 states and 397 transitions. [2022-11-03 02:02:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:48,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:48,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:48,499 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:48,499 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:48,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:48,500 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 331 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:48,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 541 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 93. [2022-11-03 02:02:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3804347826086956) internal successors, (127), 92 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 127 transitions. [2022-11-03 02:02:48,505 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 127 transitions. Word has length 61 [2022-11-03 02:02:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:48,505 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 127 transitions. [2022-11-03 02:02:48,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 127 transitions. [2022-11-03 02:02:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:48,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:48,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:48,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:48,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:48,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:48,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:48,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2097230497, now seen corresponding path program 1 times [2022-11-03 02:02:48,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:48,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761951530] [2022-11-03 02:02:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:48,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:48,717 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:48,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:02:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:48,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:48,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:48,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:48,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:48,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761951530] [2022-11-03 02:02:48,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761951530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:48,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:48,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396251257] [2022-11-03 02:02:48,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:48,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:49,000 INFO L87 Difference]: Start difference. First operand 93 states and 127 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:49,110 INFO L93 Difference]: Finished difference Result 278 states and 396 transitions. [2022-11-03 02:02:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:49,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:49,112 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:49,112 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:49,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:49,113 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 324 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:49,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 534 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 95. [2022-11-03 02:02:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.372340425531915) internal successors, (129), 94 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 129 transitions. [2022-11-03 02:02:49,119 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 129 transitions. Word has length 61 [2022-11-03 02:02:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:49,119 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 129 transitions. [2022-11-03 02:02:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 129 transitions. [2022-11-03 02:02:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:49,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:49,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:49,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:49,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:49,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:49,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1702863711, now seen corresponding path program 1 times [2022-11-03 02:02:49,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:49,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94568104] [2022-11-03 02:02:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:49,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:49,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:49,336 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:49,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:02:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:49,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:49,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:49,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:49,607 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:49,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94568104] [2022-11-03 02:02:49,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94568104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:49,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:49,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298532996] [2022-11-03 02:02:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:49,609 INFO L87 Difference]: Start difference. First operand 95 states and 129 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:49,697 INFO L93 Difference]: Finished difference Result 278 states and 395 transitions. [2022-11-03 02:02:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:49,701 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:49,701 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:49,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:49,702 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 312 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:49,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 536 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 99. [2022-11-03 02:02:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3673469387755102) internal successors, (134), 98 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 134 transitions. [2022-11-03 02:02:49,706 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 134 transitions. Word has length 61 [2022-11-03 02:02:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:49,707 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 134 transitions. [2022-11-03 02:02:49,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 134 transitions. [2022-11-03 02:02:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:49,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:49,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:49,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:49,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:49,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1977623325, now seen corresponding path program 1 times [2022-11-03 02:02:49,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:49,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003482015] [2022-11-03 02:02:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:49,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:49,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:49,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:02:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:50,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:50,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:50,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:50,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:50,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003482015] [2022-11-03 02:02:50,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003482015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:50,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:50,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507718083] [2022-11-03 02:02:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:50,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:50,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:50,184 INFO L87 Difference]: Start difference. First operand 99 states and 134 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:50,285 INFO L93 Difference]: Finished difference Result 278 states and 394 transitions. [2022-11-03 02:02:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:50,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:50,286 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:50,286 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:50,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:50,287 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 300 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:50,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 523 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 103. [2022-11-03 02:02:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3627450980392157) internal successors, (139), 102 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2022-11-03 02:02:50,291 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 61 [2022-11-03 02:02:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:50,292 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2022-11-03 02:02:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2022-11-03 02:02:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:50,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:50,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:50,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:50,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:50,493 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1468150235, now seen corresponding path program 1 times [2022-11-03 02:02:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:50,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220612027] [2022-11-03 02:02:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:50,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:50,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:50,495 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:50,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:02:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:50,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:50,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:50,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:50,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220612027] [2022-11-03 02:02:50,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220612027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:50,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:50,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931765308] [2022-11-03 02:02:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:50,779 INFO L87 Difference]: Start difference. First operand 103 states and 139 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:50,887 INFO L93 Difference]: Finished difference Result 278 states and 393 transitions. [2022-11-03 02:02:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:50,889 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:50,889 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:50,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:50,890 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 293 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:50,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 516 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 105. [2022-11-03 02:02:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 104 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 141 transitions. [2022-11-03 02:02:50,895 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 141 transitions. Word has length 61 [2022-11-03 02:02:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:50,896 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 141 transitions. [2022-11-03 02:02:50,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 141 transitions. [2022-11-03 02:02:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:50,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:50,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:50,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:51,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:51,111 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1530189849, now seen corresponding path program 1 times [2022-11-03 02:02:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132342033] [2022-11-03 02:02:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:51,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:51,113 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:51,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:02:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:51,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:51,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:51,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:51,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132342033] [2022-11-03 02:02:51,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132342033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:51,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:51,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582868765] [2022-11-03 02:02:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:51,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:51,393 INFO L87 Difference]: Start difference. First operand 105 states and 141 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:51,483 INFO L93 Difference]: Finished difference Result 278 states and 392 transitions. [2022-11-03 02:02:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:51,485 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:51,485 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:51,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:51,486 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 281 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:51,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 515 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 109. [2022-11-03 02:02:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 108 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2022-11-03 02:02:51,492 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 61 [2022-11-03 02:02:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:51,492 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2022-11-03 02:02:51,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2022-11-03 02:02:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:51,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:51,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:51,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:51,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1749044567, now seen corresponding path program 1 times [2022-11-03 02:02:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:51,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234061449] [2022-11-03 02:02:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:51,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:51,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:51,717 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:51,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:02:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:51,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:51,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:52,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:52,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:52,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234061449] [2022-11-03 02:02:52,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234061449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:52,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:52,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958036985] [2022-11-03 02:02:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:52,017 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:52,115 INFO L93 Difference]: Finished difference Result 278 states and 391 transitions. [2022-11-03 02:02:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:52,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:52,116 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:52,116 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:52,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:52,117 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 274 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:52,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 508 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 111. [2022-11-03 02:02:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3454545454545455) internal successors, (148), 110 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 148 transitions. [2022-11-03 02:02:52,122 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 148 transitions. Word has length 61 [2022-11-03 02:02:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:52,123 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 148 transitions. [2022-11-03 02:02:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 148 transitions. [2022-11-03 02:02:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:52,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:52,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:52,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:52,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:52,337 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:52,338 INFO L85 PathProgramCache]: Analyzing trace with hash 931396117, now seen corresponding path program 1 times [2022-11-03 02:02:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:52,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142375678] [2022-11-03 02:02:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:52,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:52,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:52,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:52,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:02:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:52,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:52,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:52,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:52,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142375678] [2022-11-03 02:02:52,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142375678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:52,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:52,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:52,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501492225] [2022-11-03 02:02:52,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:52,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:52,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:52,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:52,619 INFO L87 Difference]: Start difference. First operand 111 states and 148 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:52,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:52,729 INFO L93 Difference]: Finished difference Result 278 states and 390 transitions. [2022-11-03 02:02:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:52,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:52,730 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:52,731 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:52,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:52,732 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 267 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:52,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 501 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 113. [2022-11-03 02:02:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 112 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2022-11-03 02:02:52,737 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 61 [2022-11-03 02:02:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:52,737 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2022-11-03 02:02:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2022-11-03 02:02:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:52,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:52,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:52,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-03 02:02:52,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:52,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1062748589, now seen corresponding path program 1 times [2022-11-03 02:02:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401770129] [2022-11-03 02:02:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:52,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:52,960 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:52,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:02:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:53,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:53,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:53,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:53,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401770129] [2022-11-03 02:02:53,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401770129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:53,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:53,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016498965] [2022-11-03 02:02:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:53,268 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:53,367 INFO L93 Difference]: Finished difference Result 278 states and 389 transitions. [2022-11-03 02:02:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:53,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:53,368 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:53,368 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:53,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:53,369 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 255 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:53,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 497 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 117. [2022-11-03 02:02:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3362068965517242) internal successors, (155), 116 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 155 transitions. [2022-11-03 02:02:53,374 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 155 transitions. Word has length 61 [2022-11-03 02:02:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:53,375 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 155 transitions. [2022-11-03 02:02:53,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 155 transitions. [2022-11-03 02:02:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:53,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:53,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:53,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:53,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:53,576 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:53,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:53,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2073865839, now seen corresponding path program 1 times [2022-11-03 02:02:53,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:53,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624218107] [2022-11-03 02:02:53,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:53,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:53,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:53,578 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:53,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:02:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:02:53,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:53,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:53,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:53,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624218107] [2022-11-03 02:02:53,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624218107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:53,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:53,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:53,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135513389] [2022-11-03 02:02:53,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:53,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:53,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:53,865 INFO L87 Difference]: Start difference. First operand 117 states and 155 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:53,960 INFO L93 Difference]: Finished difference Result 278 states and 388 transitions. [2022-11-03 02:02:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:53,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:53,961 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:02:53,961 INFO L226 Difference]: Without dead ends: 209 [2022-11-03 02:02:53,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:53,962 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 238 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:53,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 484 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-03 02:02:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 123. [2022-11-03 02:02:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 122 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2022-11-03 02:02:53,983 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 61 [2022-11-03 02:02:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:53,984 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2022-11-03 02:02:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:53,984 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2022-11-03 02:02:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:53,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:53,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:54,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:54,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:54,185 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1411754831, now seen corresponding path program 1 times [2022-11-03 02:02:54,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:54,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172134626] [2022-11-03 02:02:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:54,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:54,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:54,188 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:54,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:02:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:02:54,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:55,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:55,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:55,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172134626] [2022-11-03 02:02:55,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172134626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:55,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:55,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:02:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781829128] [2022-11-03 02:02:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:55,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:02:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:02:55,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:02:55,048 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:55,198 INFO L93 Difference]: Finished difference Result 197 states and 270 transitions. [2022-11-03 02:02:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:55,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:55,202 INFO L225 Difference]: With dead ends: 197 [2022-11-03 02:02:55,202 INFO L226 Difference]: Without dead ends: 195 [2022-11-03 02:02:55,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:02:55,203 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 371 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:55,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 539 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-03 02:02:55,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 125. [2022-11-03 02:02:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3306451612903225) internal successors, (165), 124 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2022-11-03 02:02:55,216 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 61 [2022-11-03 02:02:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:55,217 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2022-11-03 02:02:55,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2022-11-03 02:02:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 02:02:55,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:55,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:55,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:55,431 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1411814413, now seen corresponding path program 1 times [2022-11-03 02:02:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366513978] [2022-11-03 02:02:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:55,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:55,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:55,433 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:02:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:55,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:02:55,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:55,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:55,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:55,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366513978] [2022-11-03 02:02:55,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366513978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:55,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:55,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:02:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020573365] [2022-11-03 02:02:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:55,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:55,727 INFO L87 Difference]: Start difference. First operand 125 states and 165 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:55,840 INFO L93 Difference]: Finished difference Result 266 states and 371 transitions. [2022-11-03 02:02:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:55,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 02:02:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:55,842 INFO L225 Difference]: With dead ends: 266 [2022-11-03 02:02:55,842 INFO L226 Difference]: Without dead ends: 195 [2022-11-03 02:02:55,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:02:55,843 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 202 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:55,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 440 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-03 02:02:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 129. [2022-11-03 02:02:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.328125) internal successors, (170), 128 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2022-11-03 02:02:55,849 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 61 [2022-11-03 02:02:55,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:55,849 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2022-11-03 02:02:55,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2022-11-03 02:02:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:02:55,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:55,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:55,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:56,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:56,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1553666891, now seen corresponding path program 1 times [2022-11-03 02:02:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:56,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443193416] [2022-11-03 02:02:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:56,068 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:56,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:02:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:56,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:02:56,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:56,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:56,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443193416] [2022-11-03 02:02:56,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443193416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:56,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:56,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:02:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894441159] [2022-11-03 02:02:56,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:56,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:02:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:02:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:02:56,462 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:56,494 INFO L93 Difference]: Finished difference Result 281 states and 389 transitions. [2022-11-03 02:02:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:02:56,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:02:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:56,496 INFO L225 Difference]: With dead ends: 281 [2022-11-03 02:02:56,496 INFO L226 Difference]: Without dead ends: 210 [2022-11-03 02:02:56,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:56,497 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 129 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:56,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 371 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:02:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-03 02:02:56,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 133. [2022-11-03 02:02:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-11-03 02:02:56,505 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 128 [2022-11-03 02:02:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:56,505 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-11-03 02:02:56,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-11-03 02:02:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:02:56,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:56,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:56,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:56,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:56,724 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1525146679, now seen corresponding path program 1 times [2022-11-03 02:02:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:56,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683899571] [2022-11-03 02:02:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:56,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:56,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:56,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:56,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:02:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:57,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:02:57,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:57,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:57,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683899571] [2022-11-03 02:02:57,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683899571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:57,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:57,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:02:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280564690] [2022-11-03 02:02:57,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:57,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:02:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:02:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:02:57,155 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:57,184 INFO L93 Difference]: Finished difference Result 281 states and 388 transitions. [2022-11-03 02:02:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:02:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:02:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:57,188 INFO L225 Difference]: With dead ends: 281 [2022-11-03 02:02:57,188 INFO L226 Difference]: Without dead ends: 210 [2022-11-03 02:02:57,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:02:57,189 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 113 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:57,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 370 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:02:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-03 02:02:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 139. [2022-11-03 02:02:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.318840579710145) internal successors, (182), 138 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2022-11-03 02:02:57,195 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 128 [2022-11-03 02:02:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:57,195 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2022-11-03 02:02:57,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2022-11-03 02:02:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:02:57,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:57,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:57,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:57,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:57,413 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash -808245959, now seen corresponding path program 1 times [2022-11-03 02:02:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:57,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301999207] [2022-11-03 02:02:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:57,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:57,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:57,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:02:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:57,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:02:57,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:02:58,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:02:58,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:58,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301999207] [2022-11-03 02:02:58,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301999207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:58,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1267690560] [2022-11-03 02:02:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:58,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:02:58,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:02:58,463 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:02:58,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-03 02:02:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:58,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:02:58,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:02:58,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:02:58,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1267690560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:58,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:02:58,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:02:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353490793] [2022-11-03 02:02:58,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:02:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:02:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:02:58,863 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:59,002 INFO L93 Difference]: Finished difference Result 409 states and 559 transitions. [2022-11-03 02:02:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:02:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:02:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:59,005 INFO L225 Difference]: With dead ends: 409 [2022-11-03 02:02:59,005 INFO L226 Difference]: Without dead ends: 338 [2022-11-03 02:02:59,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:02:59,006 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 332 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:59,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 557 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-03 02:02:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 151. [2022-11-03 02:02:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3266666666666667) internal successors, (199), 150 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2022-11-03 02:02:59,012 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 128 [2022-11-03 02:02:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:59,013 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2022-11-03 02:02:59,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2022-11-03 02:02:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:02:59,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:59,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:59,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:59,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-03 02:02:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:02:59,415 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1241141883, now seen corresponding path program 1 times [2022-11-03 02:02:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:59,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351566671] [2022-11-03 02:02:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:59,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:59,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:59,418 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:59,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:02:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:02:59,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:00,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:00,388 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:00,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351566671] [2022-11-03 02:03:00,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351566671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:00,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1042222463] [2022-11-03 02:03:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:00,389 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:00,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:00,390 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:00,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 02:03:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:00,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:00,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:03:00,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:00,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1042222463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:00,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:00,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774655190] [2022-11-03 02:03:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:00,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:00,818 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:00,971 INFO L93 Difference]: Finished difference Result 453 states and 625 transitions. [2022-11-03 02:03:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:00,975 INFO L225 Difference]: With dead ends: 453 [2022-11-03 02:03:00,975 INFO L226 Difference]: Without dead ends: 370 [2022-11-03 02:03:00,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:00,976 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 318 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:00,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 569 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-03 02:03:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 181. [2022-11-03 02:03:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.3444444444444446) internal successors, (242), 180 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 242 transitions. [2022-11-03 02:03:00,982 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 242 transitions. Word has length 128 [2022-11-03 02:03:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:00,982 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 242 transitions. [2022-11-03 02:03:00,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 242 transitions. [2022-11-03 02:03:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:00,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:00,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:01,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:01,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2022-11-03 02:03:01,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:01,401 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:01,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1218509629, now seen corresponding path program 1 times [2022-11-03 02:03:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:01,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000716618] [2022-11-03 02:03:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:01,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:01,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:01,403 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:01,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:03:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:01,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:02,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:02,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:02,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000716618] [2022-11-03 02:03:02,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000716618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:02,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1852730613] [2022-11-03 02:03:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:02,344 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:02,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:02,345 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:02,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-03 02:03:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:02,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:02,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:03:02,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:02,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1852730613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:02,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:02,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846145724] [2022-11-03 02:03:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:02,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:02,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:02,767 INFO L87 Difference]: Start difference. First operand 181 states and 242 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:02,931 INFO L93 Difference]: Finished difference Result 571 states and 798 transitions. [2022-11-03 02:03:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:02,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:02,934 INFO L225 Difference]: With dead ends: 571 [2022-11-03 02:03:02,935 INFO L226 Difference]: Without dead ends: 458 [2022-11-03 02:03:02,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:02,936 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 305 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:02,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 586 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-03 02:03:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 243. [2022-11-03 02:03:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.3677685950413223) internal successors, (331), 242 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 331 transitions. [2022-11-03 02:03:02,953 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 331 transitions. Word has length 128 [2022-11-03 02:03:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:02,954 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 331 transitions. [2022-11-03 02:03:02,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:02,955 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 331 transitions. [2022-11-03 02:03:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:02,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:02,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:02,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:03,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:03,367 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash 960344191, now seen corresponding path program 1 times [2022-11-03 02:03:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:03,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675111889] [2022-11-03 02:03:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:03,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:03,370 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:03:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:03,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:03,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:03,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:04,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675111889] [2022-11-03 02:03:04,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675111889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:04,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1808264008] [2022-11-03 02:03:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:04,309 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:04,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:04,310 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:04,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-03 02:03:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:04,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:04,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:04,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:04,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1808264008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:04,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:04,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230437478] [2022-11-03 02:03:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:04,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:04,805 INFO L87 Difference]: Start difference. First operand 243 states and 331 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:04,940 INFO L93 Difference]: Finished difference Result 881 states and 1237 transitions. [2022-11-03 02:03:04,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:04,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:04,944 INFO L225 Difference]: With dead ends: 881 [2022-11-03 02:03:04,944 INFO L226 Difference]: Without dead ends: 706 [2022-11-03 02:03:04,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:04,946 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 408 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:04,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 418 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-03 02:03:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 359. [2022-11-03 02:03:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.388268156424581) internal successors, (497), 358 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 497 transitions. [2022-11-03 02:03:04,957 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 497 transitions. Word has length 128 [2022-11-03 02:03:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:04,958 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 497 transitions. [2022-11-03 02:03:04,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 497 transitions. [2022-11-03 02:03:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:04,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:04,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:04,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:05,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-11-03 02:03:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:05,374 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1406350403, now seen corresponding path program 1 times [2022-11-03 02:03:05,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:05,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313641869] [2022-11-03 02:03:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:05,377 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:05,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:03:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:05,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:05,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:06,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:06,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313641869] [2022-11-03 02:03:06,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313641869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:06,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [908283263] [2022-11-03 02:03:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:06,224 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:06,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:06,225 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:06,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-03 02:03:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:06,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:06,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:06,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:06,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [908283263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:06,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:06,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:06,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534378885] [2022-11-03 02:03:06,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:06,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:06,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:06,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:06,593 INFO L87 Difference]: Start difference. First operand 359 states and 497 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:06,749 INFO L93 Difference]: Finished difference Result 1013 states and 1400 transitions. [2022-11-03 02:03:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:06,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:06,753 INFO L225 Difference]: With dead ends: 1013 [2022-11-03 02:03:06,753 INFO L226 Difference]: Without dead ends: 682 [2022-11-03 02:03:06,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:06,755 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 249 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:06,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 584 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:06,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-03 02:03:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 371. [2022-11-03 02:03:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.3675675675675676) internal successors, (506), 370 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 506 transitions. [2022-11-03 02:03:06,767 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 506 transitions. Word has length 128 [2022-11-03 02:03:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:06,767 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 506 transitions. [2022-11-03 02:03:06,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 506 transitions. [2022-11-03 02:03:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:06,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:06,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:06,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:06,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:07,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:07,187 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:07,188 INFO L85 PathProgramCache]: Analyzing trace with hash 644633595, now seen corresponding path program 1 times [2022-11-03 02:03:07,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:07,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597584768] [2022-11-03 02:03:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:07,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:07,190 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:07,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:03:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:07,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:07,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:07,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:08,007 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597584768] [2022-11-03 02:03:08,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597584768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1724521425] [2022-11-03 02:03:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:08,008 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:08,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:08,009 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:08,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-03 02:03:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:08,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:08,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:08,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:08,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1724521425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:08,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:08,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476991863] [2022-11-03 02:03:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:08,411 INFO L87 Difference]: Start difference. First operand 371 states and 506 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:08,564 INFO L93 Difference]: Finished difference Result 1025 states and 1411 transitions. [2022-11-03 02:03:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:08,566 INFO L225 Difference]: With dead ends: 1025 [2022-11-03 02:03:08,567 INFO L226 Difference]: Without dead ends: 704 [2022-11-03 02:03:08,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:08,568 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:08,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 609 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-03 02:03:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 381. [2022-11-03 02:03:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.355263157894737) internal successors, (515), 380 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 515 transitions. [2022-11-03 02:03:08,579 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 515 transitions. Word has length 128 [2022-11-03 02:03:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:08,579 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 515 transitions. [2022-11-03 02:03:08,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 515 transitions. [2022-11-03 02:03:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:08,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:08,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:08,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:08,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:08,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:08,985 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:08,985 INFO L85 PathProgramCache]: Analyzing trace with hash 510620089, now seen corresponding path program 1 times [2022-11-03 02:03:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:08,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009594112] [2022-11-03 02:03:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:08,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:08,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:08,987 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:08,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:03:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:09,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:09,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:09,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:09,860 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:09,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009594112] [2022-11-03 02:03:09,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009594112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346061737] [2022-11-03 02:03:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:09,861 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:09,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:09,862 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:09,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-03 02:03:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:10,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:10,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:10,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346061737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:10,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:10,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:10,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415130987] [2022-11-03 02:03:10,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:10,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:10,237 INFO L87 Difference]: Start difference. First operand 381 states and 515 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:10,397 INFO L93 Difference]: Finished difference Result 1025 states and 1410 transitions. [2022-11-03 02:03:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:10,400 INFO L225 Difference]: With dead ends: 1025 [2022-11-03 02:03:10,400 INFO L226 Difference]: Without dead ends: 712 [2022-11-03 02:03:10,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:10,402 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 229 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:10,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 628 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-03 02:03:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 389. [2022-11-03 02:03:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.342783505154639) internal successors, (521), 388 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 521 transitions. [2022-11-03 02:03:10,413 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 521 transitions. Word has length 128 [2022-11-03 02:03:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:10,414 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 521 transitions. [2022-11-03 02:03:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 521 transitions. [2022-11-03 02:03:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:10,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:10,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:10,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:10,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2022-11-03 02:03:10,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:10,832 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash -510448265, now seen corresponding path program 1 times [2022-11-03 02:03:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:10,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570494941] [2022-11-03 02:03:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:10,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:10,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:10,835 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:10,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:03:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:11,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:11,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:11,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:11,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570494941] [2022-11-03 02:03:11,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570494941] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1530167151] [2022-11-03 02:03:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:11,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:11,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:11,711 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:11,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-03 02:03:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:12,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:12,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:12,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:12,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1530167151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:12,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:12,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103764441] [2022-11-03 02:03:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:12,095 INFO L87 Difference]: Start difference. First operand 389 states and 521 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:12,251 INFO L93 Difference]: Finished difference Result 1025 states and 1405 transitions. [2022-11-03 02:03:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:12,257 INFO L225 Difference]: With dead ends: 1025 [2022-11-03 02:03:12,257 INFO L226 Difference]: Without dead ends: 718 [2022-11-03 02:03:12,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:12,259 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 222 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:12,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 641 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-03 02:03:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 395. [2022-11-03 02:03:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3375634517766497) internal successors, (527), 394 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 527 transitions. [2022-11-03 02:03:12,279 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 527 transitions. Word has length 128 [2022-11-03 02:03:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:12,279 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 527 transitions. [2022-11-03 02:03:12,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 527 transitions. [2022-11-03 02:03:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:12,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:12,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:12,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:12,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-03 02:03:12,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:12,684 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:12,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash -903475275, now seen corresponding path program 1 times [2022-11-03 02:03:12,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:12,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736706344] [2022-11-03 02:03:12,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:12,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:12,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:12,687 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:12,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:03:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:12,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:12,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:13,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:13,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:13,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736706344] [2022-11-03 02:03:13,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736706344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:13,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1239554115] [2022-11-03 02:03:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:13,561 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:13,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:13,563 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:13,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-03 02:03:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:13,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:03:13,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:03:13,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:03:13,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1239554115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:13,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:03:13,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 14 [2022-11-03 02:03:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712090501] [2022-11-03 02:03:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:03:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:03:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:03:13,967 INFO L87 Difference]: Start difference. First operand 395 states and 527 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:14,131 INFO L93 Difference]: Finished difference Result 1021 states and 1397 transitions. [2022-11-03 02:03:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:03:14,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:14,134 INFO L225 Difference]: With dead ends: 1021 [2022-11-03 02:03:14,134 INFO L226 Difference]: Without dead ends: 718 [2022-11-03 02:03:14,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:03:14,135 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 217 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:14,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 648 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:03:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-03 02:03:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 399. [2022-11-03 02:03:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3316582914572865) internal successors, (530), 398 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 530 transitions. [2022-11-03 02:03:14,146 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 530 transitions. Word has length 128 [2022-11-03 02:03:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:14,146 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 530 transitions. [2022-11-03 02:03:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 530 transitions. [2022-11-03 02:03:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-03 02:03:14,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:14,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:14,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:14,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 02:03:14,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:14,555 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash -846216973, now seen corresponding path program 1 times [2022-11-03 02:03:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:14,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077944377] [2022-11-03 02:03:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:14,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:14,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:14,556 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:14,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:03:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:14,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:14,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:15,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:15,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:15,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077944377] [2022-11-03 02:03:15,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077944377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:15,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1177876711] [2022-11-03 02:03:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:15,364 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:15,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:15,367 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:15,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-03 02:03:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:15,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:03:15,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:16,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:16,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1177876711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:16,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632998841] [2022-11-03 02:03:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:16,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:16,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:16,684 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:16,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-03 02:03:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:16,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:03:16,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:17,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:03:17,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632998841] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:17,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:03:17,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 8, 7, 7] total 31 [2022-11-03 02:03:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981008521] [2022-11-03 02:03:17,677 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:17,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-03 02:03:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-03 02:03:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:03:17,679 INFO L87 Difference]: Start difference. First operand 399 states and 530 transitions. Second operand has 31 states, 31 states have (on average 16.096774193548388) internal successors, (499), 31 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:18,555 INFO L93 Difference]: Finished difference Result 1734 states and 2404 transitions. [2022-11-03 02:03:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:03:18,556 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 16.096774193548388) internal successors, (499), 31 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-03 02:03:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:18,560 INFO L225 Difference]: With dead ends: 1734 [2022-11-03 02:03:18,560 INFO L226 Difference]: Without dead ends: 1391 [2022-11-03 02:03:18,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 731 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1493, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 02:03:18,566 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1650 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:18,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 3687 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 229 Invalid, 0 Unknown, 144 Unchecked, 0.4s Time] [2022-11-03 02:03:18,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-11-03 02:03:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 530. [2022-11-03 02:03:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.3686200378071833) internal successors, (724), 529 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 724 transitions. [2022-11-03 02:03:18,590 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 724 transitions. Word has length 128 [2022-11-03 02:03:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:18,590 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 724 transitions. [2022-11-03 02:03:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 16.096774193548388) internal successors, (499), 31 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 724 transitions. [2022-11-03 02:03:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 02:03:18,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:18,593 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:03:18,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:18,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:19,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-03 02:03:19,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:19,207 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -819888193, now seen corresponding path program 1 times [2022-11-03 02:03:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870395311] [2022-11-03 02:03:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:19,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:19,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:19,210 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:19,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:03:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:19,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:03:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 125 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:03:19,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 125 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:03:20,193 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:03:20,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870395311] [2022-11-03 02:03:20,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870395311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:20,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096619100] [2022-11-03 02:03:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:20,194 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:03:20,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:03:20,194 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:03:20,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-03 02:03:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:20,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:03:20,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 88 proven. 36 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-03 02:03:21,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 88 proven. 36 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-03 02:03:22,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096619100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:22,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447672971] [2022-11-03 02:03:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:22,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:22,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:22,320 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:22,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-03 02:03:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:22,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:03:22,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-03 02:03:22,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 119 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-03 02:03:23,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447672971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:23,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:03:23,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 9, 7, 7] total 33 [2022-11-03 02:03:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960097583] [2022-11-03 02:03:23,241 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 02:03:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 02:03:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:03:23,243 INFO L87 Difference]: Start difference. First operand 530 states and 724 transitions. Second operand has 33 states, 33 states have (on average 16.272727272727273) internal successors, (537), 33 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:24,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:24,921 INFO L93 Difference]: Finished difference Result 1250 states and 1763 transitions. [2022-11-03 02:03:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:03:24,923 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 16.272727272727273) internal successors, (537), 33 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-11-03 02:03:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:24,924 INFO L225 Difference]: With dead ends: 1250 [2022-11-03 02:03:24,924 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:03:24,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1190 GetRequests, 1135 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=776, Invalid=2194, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:03:24,929 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1220 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:24,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 2798 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 564 Invalid, 0 Unknown, 82 Unchecked, 0.6s Time] [2022-11-03 02:03:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:03:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:03:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:03:24,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 195 [2022-11-03 02:03:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:24,930 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:03:24,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.272727272727273) internal successors, (537), 33 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:03:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:03:24,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:03:24,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:03:24,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:25,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:25,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 02:03:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:25,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:09:36,422 WARN L234 SmtUtils]: Spent 6.18m on a formula simplification that was a NOOP. DAG size: 163 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-03 02:09:37,047 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2022-11-03 02:09:37,047 INFO L899 garLoopResultBuilder]: For program point L184-2(line 184) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L317(line 317) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L284(line 284) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L317-2(line 317) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L284-2(line 284) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-03 02:09:37,048 INFO L899 garLoopResultBuilder]: For program point L268(line 268) no Hoare annotation was computed. [2022-11-03 02:09:37,049 INFO L899 garLoopResultBuilder]: For program point L268-2(line 268) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L252(line 252) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L252-2(line 252) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L236(line 236) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L236-2(line 236) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L220(line 220) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L220-2(line 220) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L204(line 204) no Hoare annotation was computed. [2022-11-03 02:09:37,050 INFO L899 garLoopResultBuilder]: For program point L204-2(line 204) no Hoare annotation was computed. [2022-11-03 02:09:37,051 INFO L899 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2022-11-03 02:09:37,051 INFO L899 garLoopResultBuilder]: For program point L188-2(line 188) no Hoare annotation was computed. [2022-11-03 02:09:37,051 INFO L899 garLoopResultBuilder]: For program point L321(line 321) no Hoare annotation was computed. [2022-11-03 02:09:37,051 INFO L899 garLoopResultBuilder]: For program point L321-2(line 321) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L305(line 305) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L272(line 272) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L305-2(line 305) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L272-2(line 272) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L256(line 256) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L256-2(line 256) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L240(line 240) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L240-2(line 240) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L224(line 224) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L224-2(line 224) no Hoare annotation was computed. [2022-11-03 02:09:37,052 INFO L899 garLoopResultBuilder]: For program point L208(line 208) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L208-2(line 208) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L192(line 192) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L192-2(line 192) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L176-2(line 176) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L276(line 276) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L276-2(line 276) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L260(line 260) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L260-2(line 260) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L244(line 244) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L244-2(line 244) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L228(line 228) no Hoare annotation was computed. [2022-11-03 02:09:37,053 INFO L899 garLoopResultBuilder]: For program point L228-2(line 228) no Hoare annotation was computed. [2022-11-03 02:09:37,054 INFO L899 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2022-11-03 02:09:37,056 INFO L899 garLoopResultBuilder]: For program point L212-2(line 212) no Hoare annotation was computed. [2022-11-03 02:09:37,056 INFO L895 garLoopResultBuilder]: At program point L328(lines 22 329) the Hoare annotation is: false [2022-11-03 02:09:37,056 INFO L899 garLoopResultBuilder]: For program point L196(line 196) no Hoare annotation was computed. [2022-11-03 02:09:37,056 INFO L899 garLoopResultBuilder]: For program point L196-2(line 196) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point L180(line 180) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point L180-2(line 180) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L895 garLoopResultBuilder]: At program point L98-2(lines 98 327) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= (_ bv15 8) |ULTIMATE.start_main_~mask_SORT_90~0#1|)) (.cse2 (= (_ bv522618 32) |ULTIMATE.start_main_~var_88~0#1|)) (.cse3 (= |ULTIMATE.start_main_~var_10~0#1| (_ bv0 8))) (.cse4 (= (_ bv0 8) |ULTIMATE.start_main_~state_11~0#1|)) (.cse5 (= |ULTIMATE.start_main_~var_20~0#1| (_ bv5 32))) (.cse6 (= |ULTIMATE.start_main_~var_107~0#1| (_ bv0 8))) (.cse7 (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_9~0#1|)) (.cse8 (= |ULTIMATE.start_main_~var_45~0#1| (_ bv0 32)))) (or (and (= (_ bv6 32) |ULTIMATE.start_main_~var_15~0#1|) .cse0 (= (_ bv0 8) |ULTIMATE.start_main_~state_108~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~var_40~0#1| (_ bv1 32)) (= (_ bv2 32) |ULTIMATE.start_main_~var_35~0#1|) .cse6 (= (_ bv3 32) |ULTIMATE.start_main_~var_30~0#1|) .cse7 .cse8 (= (_ bv4 32) |ULTIMATE.start_main_~var_25~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~var_47_arg_0~0#1| |ULTIMATE.start_main_~var_46~0#1|) .cse1 (= (_ bv522618 32) |ULTIMATE.start_main_~var_89_arg_1~0#1|) (= |ULTIMATE.start_main_~next_112_arg_1~0#1| (_ bv0 8)) .cse2 .cse3 (= |ULTIMATE.start_main_~var_32_arg_0~0#1| |ULTIMATE.start_main_~var_31~0#1|) .cse4 (= |ULTIMATE.start_main_~var_21~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_111_arg_1~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_46~0#1|) .cse5 (= |ULTIMATE.start_main_~var_22_arg_0~0#1| (_ bv0 8)) .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~var_42_arg_0~0#1| |ULTIMATE.start_main_~var_41~0#1|)))) [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point L98-3(lines 98 327) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point L313(line 313) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point L280(line 280) no Hoare annotation was computed. [2022-11-03 02:09:37,057 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L313-2(line 313) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L280-2(line 280) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L264(line 264) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L264-2(line 264) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L248(line 248) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L248-2(line 248) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L232(line 232) no Hoare annotation was computed. [2022-11-03 02:09:37,058 INFO L899 garLoopResultBuilder]: For program point L232-2(line 232) no Hoare annotation was computed. [2022-11-03 02:09:37,059 INFO L899 garLoopResultBuilder]: For program point L216(line 216) no Hoare annotation was computed. [2022-11-03 02:09:37,059 INFO L899 garLoopResultBuilder]: For program point L216-2(line 216) no Hoare annotation was computed. [2022-11-03 02:09:37,059 INFO L899 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2022-11-03 02:09:37,059 INFO L899 garLoopResultBuilder]: For program point L200-2(line 200) no Hoare annotation was computed. [2022-11-03 02:09:37,062 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:37,064 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:09:37,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:09:37 BoogieIcfgContainer [2022-11-03 02:09:37,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:09:37,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:09:37,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:09:37,095 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:09:37,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:42" (3/4) ... [2022-11-03 02:09:37,111 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:09:37,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 02:09:37,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 02:09:37,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:09:37,188 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:09:37,191 INFO L158 Benchmark]: Toolchain (without parser) took 416152.99ms. Allocated memory was 67.1MB in the beginning and 302.0MB in the end (delta: 234.9MB). Free memory was 43.0MB in the beginning and 268.6MB in the end (delta: -225.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,191 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 50.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:09:37,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.05ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 43.2MB in the end (delta: -439.7kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.15ms. Allocated memory is still 67.1MB. Free memory was 43.0MB in the beginning and 39.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,192 INFO L158 Benchmark]: Boogie Preprocessor took 88.61ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 37.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,192 INFO L158 Benchmark]: RCFGBuilder took 886.97ms. Allocated memory is still 67.1MB. Free memory was 37.4MB in the beginning and 41.4MB in the end (delta: -4.1MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,193 INFO L158 Benchmark]: TraceAbstraction took 414518.08ms. Allocated memory was 67.1MB in the beginning and 302.0MB in the end (delta: 234.9MB). Free memory was 40.5MB in the beginning and 273.8MB in the end (delta: -233.3MB). Peak memory consumption was 183.7MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,193 INFO L158 Benchmark]: Witness Printer took 95.86ms. Allocated memory is still 302.0MB. Free memory was 273.8MB in the beginning and 268.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 02:09:37,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 50.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.05ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 43.2MB in the end (delta: -439.7kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.15ms. Allocated memory is still 67.1MB. Free memory was 43.0MB in the beginning and 39.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.61ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 37.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 886.97ms. Allocated memory is still 67.1MB. Free memory was 37.4MB in the beginning and 41.4MB in the end (delta: -4.1MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 414518.08ms. Allocated memory was 67.1MB in the beginning and 302.0MB in the end (delta: 234.9MB). Free memory was 40.5MB in the beginning and 273.8MB in the end (delta: -233.3MB). Peak memory consumption was 183.7MB. Max. memory is 16.1GB. * Witness Printer took 95.86ms. Allocated memory is still 302.0MB. Free memory was 273.8MB in the beginning and 268.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 414.4s, OverallIterations: 33, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 371.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11937 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11937 mSDsluCounter, 22948 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 226 IncrementalHoareTripleChecker+Unchecked, 17348 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1840 IncrementalHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 5600 mSDtfsCounter, 1840 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6966 GetRequests, 6595 SyntacticMatches, 17 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=530occurred in iteration=32, InterpolantAutomatonStates: 250, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 33 MinimizatonAttempts, 5727 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 103 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 370.9s HoareSimplificationTime, 2 FomulaSimplificationsInter, 73718784 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 2.7s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 4749 NumberOfCodeBlocks, 4749 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 6809 ConstructedInterpolants, 748 QuantifiedInterpolants, 27114 SizeOfPredicates, 446 NumberOfNonLiveVariables, 21172 ConjunctsInSsa, 511 ConjunctsInUnsatCore, 61 InterpolantComputations, 31 PerfectInterpolantSequences, 2994/3128 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: ((((((((((((((6bv32 == var_15 && 1bv8 == mask_SORT_1) && 0bv8 == state_108) && 15bv8 == mask_SORT_90) && 522618bv32 == var_88) && var_10 == 0bv8) && 0bv8 == state_11) && var_20 == 5bv32) && var_40 == 1bv32) && 2bv32 == var_35) && var_107 == 0bv8) && 3bv32 == var_30) && 7bv8 == mask_SORT_9) && var_45 == 0bv32) && 4bv32 == var_25) || (((((((((((((((((1bv8 == mask_SORT_1 && var_47_arg_0 == var_46) && 15bv8 == mask_SORT_90) && 522618bv32 == var_89_arg_1) && next_112_arg_1 == 0bv8) && 522618bv32 == var_88) && var_10 == 0bv8) && var_32_arg_0 == var_31) && 0bv8 == state_11) && var_21 == 0bv8) && var_111_arg_1 == 0bv8) && 1bv8 == var_46) && var_20 == 5bv32) && var_22_arg_0 == 0bv8) && var_107 == 0bv8) && 7bv8 == mask_SORT_9) && var_45 == 0bv32) && var_42_arg_0 == var_41) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:09:37,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_978cb2ad-b1f1-47ad-b314-fdfb690ae8db/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null