./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/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_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/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_0841902f-26b9-43d6-9778-604d983bbdd6/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 3dde7400d155ca28a4f0749972f412852f62227f635858fd0984dd87b9b6bdc1 --- 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 02:21:49,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:21:49,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:21:49,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:21:49,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:21:49,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:21:49,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:21:49,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:21:49,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:21:49,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:21:49,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:21:49,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:21:49,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:21:49,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:21:49,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:21:49,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:21:49,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:21:49,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:21:49,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:21:49,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:21:49,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:21:49,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:21:49,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:21:49,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:21:49,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:21:49,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:21:49,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:21:49,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:21:49,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:21:49,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:21:49,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:21:49,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:21:49,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:21:49,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:21:49,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:21:49,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:21:49,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:21:49,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:21:49,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:21:49,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:21:49,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:21:49,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:21:49,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:21:49,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:21:49,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:21:49,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:21:49,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:21:49,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:21:49,995 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:21:49,995 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:21:49,996 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:21:49,996 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:21:49,996 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:21:49,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:21:49,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:21:49,997 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:21:49,997 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:21:49,998 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:21:49,998 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:21:49,998 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:21:49,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:21:49,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:21:50,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:21:50,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:21:50,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:21:50,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:21:50,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:21:50,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:21:50,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:21:50,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:21:50,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:21:50,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:50,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:21:50,003 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:21:50,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:21:50,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:21:50,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:21:50,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:21:50,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:21:50,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:21:50,005 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_0841902f-26b9-43d6-9778-604d983bbdd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dde7400d155ca28a4f0749972f412852f62227f635858fd0984dd87b9b6bdc1 [2022-11-03 02:21:50,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:21:50,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:21:50,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:21:50,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:21:50,474 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:21:50,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c [2022-11-03 02:21:50,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/2e06e7f11/eb89a248b7954056be8b603392c80524/FLAG2bfb6dc00 [2022-11-03 02:21:51,416 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:21:51,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c [2022-11-03 02:21:51,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/2e06e7f11/eb89a248b7954056be8b603392c80524/FLAG2bfb6dc00 [2022-11-03 02:21:51,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/2e06e7f11/eb89a248b7954056be8b603392c80524 [2022-11-03 02:21:51,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:21:51,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:21:51,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:51,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:21:51,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:21:51,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:51" (1/1) ... [2022-11-03 02:21:51,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bfe3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:51, skipping insertion in model container [2022-11-03 02:21:51,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:51" (1/1) ... [2022-11-03 02:21:51,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:21:51,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:21:51,960 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_0841902f-26b9-43d6-9778-604d983bbdd6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c[1107,1120] [2022-11-03 02:21:52,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:52,465 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:21:52,479 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_0841902f-26b9-43d6-9778-604d983bbdd6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c[1107,1120] [2022-11-03 02:21:52,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:52,689 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:21:52,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52 WrapperNode [2022-11-03 02:21:52,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:52,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:52,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:21:52,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:21:52,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:52,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,014 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1834 [2022-11-03 02:21:53,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:53,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:21:53,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:21:53,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:21:53,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,303 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:21:53,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:21:53,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:21:53,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:21:53,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (1/1) ... [2022-11-03 02:21:53,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:53,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:53,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:21:53,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:21:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:21:53,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:21:54,028 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:21:54,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:22:01,267 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:22:09,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:22:09,116 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:22:09,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:22:09 BoogieIcfgContainer [2022-11-03 02:22:09,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:22:09,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:22:09,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:22:09,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:22:09,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:21:51" (1/3) ... [2022-11-03 02:22:09,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d64cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:22:09, skipping insertion in model container [2022-11-03 02:22:09,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:52" (2/3) ... [2022-11-03 02:22:09,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d64cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:22:09, skipping insertion in model container [2022-11-03 02:22:09,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:22:09" (3/3) ... [2022-11-03 02:22:09,132 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal9.c [2022-11-03 02:22:09,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:22:09,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:22:09,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:22:09,229 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;@6cbc66d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:22:09,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:22:09,236 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 02:22:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:22:09,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:09,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:22:09,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:09,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 23427792, now seen corresponding path program 1 times [2022-11-03 02:22:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354204315] [2022-11-03 02:22:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:23:00,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:23:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:23:44,054 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:23:44,057 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:23:44,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:23:44,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:23:44,067 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:23:44,073 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:23:44,178 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:23:44,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:23:44 BoogieIcfgContainer [2022-11-03 02:23:44,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:23:44,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:23:44,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:23:44,236 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:23:44,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:22:09" (3/4) ... [2022-11-03 02:23:44,242 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:23:44,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:23:44,244 INFO L158 Benchmark]: Toolchain (without parser) took 112680.20ms. Allocated memory was 132.1MB in the beginning and 4.0GB in the end (delta: 3.9GB). Free memory was 91.7MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-03 02:23:44,245 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 132.1MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:23:44,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1124.71ms. Allocated memory is still 132.1MB. Free memory was 91.6MB in the beginning and 68.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 02:23:44,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 324.25ms. Allocated memory is still 132.1MB. Free memory was 68.0MB in the beginning and 86.0MB in the end (delta: -17.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-03 02:23:44,249 INFO L158 Benchmark]: Boogie Preprocessor took 351.30ms. Allocated memory is still 132.1MB. Free memory was 86.0MB in the beginning and 79.5MB in the end (delta: 6.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2022-11-03 02:23:44,256 INFO L158 Benchmark]: RCFGBuilder took 15751.87ms. Allocated memory was 132.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 79.5MB in the beginning and 698.8MB in the end (delta: -619.3MB). Peak memory consumption was 513.0MB. Max. memory is 16.1GB. [2022-11-03 02:23:44,257 INFO L158 Benchmark]: TraceAbstraction took 95111.29ms. Allocated memory was 1.3GB in the beginning and 4.0GB in the end (delta: 2.8GB). Free memory was 697.8MB in the beginning and 2.9GB in the end (delta: -2.2GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-03 02:23:44,258 INFO L158 Benchmark]: Witness Printer took 6.28ms. Allocated memory is still 4.0GB. Free memory is still 2.9GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:23:44,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 132.1MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1124.71ms. Allocated memory is still 132.1MB. Free memory was 91.6MB in the beginning and 68.0MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 324.25ms. Allocated memory is still 132.1MB. Free memory was 68.0MB in the beginning and 86.0MB in the end (delta: -17.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 351.30ms. Allocated memory is still 132.1MB. Free memory was 86.0MB in the beginning and 79.5MB in the end (delta: 6.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * RCFGBuilder took 15751.87ms. Allocated memory was 132.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 79.5MB in the beginning and 698.8MB in the end (delta: -619.3MB). Peak memory consumption was 513.0MB. Max. memory is 16.1GB. * TraceAbstraction took 95111.29ms. Allocated memory was 1.3GB in the beginning and 4.0GB in the end (delta: 2.8GB). Free memory was 697.8MB in the beginning and 2.9GB in the end (delta: -2.2GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 6.28ms. Allocated memory is still 4.0GB. Free memory is still 2.9GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 192, overapproximation of bitwiseAnd at line 158, overapproximation of bitwiseComplement at line 189, overapproximation of bitwiseXOr at line 195. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 2); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (2 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 3); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (3 - 1); [L34] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 5); [L35] const SORT_14 msb_SORT_14 = (SORT_14)1 << (5 - 1); [L37] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 8); [L38] const SORT_17 msb_SORT_17 = (SORT_17)1 << (8 - 1); [L40] const SORT_105 mask_SORT_105 = (SORT_105)-1 >> (sizeof(SORT_105) * 8 - 4); [L41] const SORT_105 msb_SORT_105 = (SORT_105)1 << (4 - 1); [L43] const SORT_145 mask_SORT_145 = (SORT_145)-1 >> (sizeof(SORT_145) * 8 - 6); [L44] const SORT_145 msb_SORT_145 = (SORT_145)1 << (6 - 1); [L46] const SORT_147 mask_SORT_147 = (SORT_147)-1 >> (sizeof(SORT_147) * 8 - 7); [L47] const SORT_147 msb_SORT_147 = (SORT_147)1 << (7 - 1); [L49] const SORT_150 mask_SORT_150 = (SORT_150)-1 >> (sizeof(SORT_150) * 8 - 9); [L50] const SORT_150 msb_SORT_150 = (SORT_150)1 << (9 - 1); [L52] const SORT_152 mask_SORT_152 = (SORT_152)-1 >> (sizeof(SORT_152) * 8 - 10); [L53] const SORT_152 msb_SORT_152 = (SORT_152)1 << (10 - 1); [L55] const SORT_154 mask_SORT_154 = (SORT_154)-1 >> (sizeof(SORT_154) * 8 - 11); [L56] const SORT_154 msb_SORT_154 = (SORT_154)1 << (11 - 1); [L58] const SORT_156 mask_SORT_156 = (SORT_156)-1 >> (sizeof(SORT_156) * 8 - 12); [L59] const SORT_156 msb_SORT_156 = (SORT_156)1 << (12 - 1); [L61] const SORT_1 var_27 = 0; [L62] const SORT_17 var_31 = 0; [L63] const SORT_6 var_37 = 0; [L64] const SORT_1 var_45 = 1; [L65] const SORT_8 var_46 = 1; [L66] const SORT_8 var_49 = 3; [L67] const SORT_8 var_52 = 2; [L68] const SORT_8 var_56 = 5; [L69] const SORT_8 var_59 = 7; [L70] const SORT_8 var_62 = 6; [L71] const SORT_8 var_66 = 4; [L72] const SORT_6 var_72 = 2; [L73] const SORT_6 var_74 = 1; [L74] const SORT_6 var_84 = 3; [L75] const SORT_14 var_95 = 11; [L76] const SORT_14 var_97 = 10; [L77] const SORT_14 var_99 = 2; [L78] const SORT_14 var_101 = 9; [L79] const SORT_14 var_117 = 21; [L80] const SORT_14 var_119 = 20; [L81] const SORT_14 var_121 = 19; [L82] const SORT_14 var_123 = 18; [L83] const SORT_14 var_125 = 17; [L84] const SORT_14 var_127 = 16; [L85] const SORT_14 var_129 = 15; [L86] const SORT_14 var_131 = 14; [L87] const SORT_14 var_133 = 8; [L88] const SORT_14 var_135 = 6; [L89] const SORT_14 var_137 = 3; [L90] const SORT_14 var_139 = 5; [L91] const SORT_14 var_159 = 4; [L92] const SORT_14 var_161 = 1; [L93] const SORT_14 var_171 = 7; [L94] const SORT_14 var_189 = 13; [L95] const SORT_14 var_197 = 12; [L96] const SORT_14 var_218 = 23; [L97] const SORT_14 var_221 = 22; [L98] const SORT_14 var_230 = 25; [L99] const SORT_14 var_233 = 27; [L100] const SORT_14 var_236 = 26; [L101] const SORT_14 var_240 = 29; [L102] const SORT_14 var_243 = 31; [L103] const SORT_14 var_246 = 30; [L104] const SORT_14 var_250 = 28; [L105] const SORT_14 var_256 = 24; [L106] const SORT_145 var_279 = 0; [L107] const SORT_17 var_299 = 2; [L108] const SORT_17 var_302 = 1; [L109] const SORT_17 var_405 = 3; [L111] SORT_1 input_2; [L112] SORT_1 input_3; [L113] SORT_1 input_4; [L114] SORT_1 input_5; [L115] SORT_6 input_7; [L116] SORT_8 input_9; [L117] SORT_6 input_10; [L118] SORT_1 input_11; [L119] SORT_1 input_12; [L120] SORT_1 input_13; [L121] SORT_14 input_15; [L122] SORT_6 input_16; [L123] SORT_17 input_18; [L124] SORT_6 input_19; [L125] SORT_1 input_20; [L126] SORT_1 input_21; [L127] SORT_6 input_22; [L128] SORT_17 input_23; [L129] SORT_17 input_24; [L130] SORT_1 input_25; [L131] SORT_6 input_26; [L133] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L134] SORT_17 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L135] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L136] SORT_6 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L137] SORT_17 state_307 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L138] SORT_1 state_324 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L139] SORT_6 state_353 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L141] SORT_1 init_29_arg_1 = var_27; [L142] state_28 = init_29_arg_1 [L143] SORT_17 init_33_arg_1 = var_31; [L144] state_32 = init_33_arg_1 [L145] SORT_1 init_35_arg_1 = var_27; [L146] state_34 = init_35_arg_1 [L147] SORT_6 init_39_arg_1 = var_37; [L148] state_38 = init_39_arg_1 [L149] SORT_17 init_308_arg_1 = var_31; [L150] state_307 = init_308_arg_1 [L151] SORT_1 init_325_arg_1 = var_27; [L152] state_324 = init_325_arg_1 [L153] SORT_6 init_354_arg_1 = var_37; [L154] state_353 = init_354_arg_1 VAL [init_29_arg_1=0, init_308_arg_1=0, init_325_arg_1=0, init_33_arg_1=0, init_354_arg_1=0, init_35_arg_1=0, init_39_arg_1=0, mask_SORT_1=1, mask_SORT_105=15, mask_SORT_14=31, mask_SORT_145=63, mask_SORT_147=127, mask_SORT_150=511, mask_SORT_152=1023, mask_SORT_154=2047, mask_SORT_156=4095, mask_SORT_17=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_105=8, msb_SORT_14=16, msb_SORT_145=32, msb_SORT_147=64, msb_SORT_150=256, msb_SORT_152=512, msb_SORT_154=1024, msb_SORT_156=2048, msb_SORT_17=128, msb_SORT_6=2, msb_SORT_8=4, state_28=0, state_307=0, state_32=0, state_324=0, state_34=0, state_353=0, state_38=0, var_101=9, var_117=21, var_119=20, var_121=19, var_123=18, var_125=17, var_127=16, var_129=15, var_131=14, var_133=8, var_135=6, var_137=3, var_139=5, var_159=4, var_161=1, var_171=7, var_189=13, var_197=12, var_218=23, var_221=22, var_230=25, var_233=27, var_236=26, var_240=29, var_243=31, var_246=30, var_250=28, var_256=24, var_27=0, var_279=0, var_299=2, var_302=1, var_31=0, var_37=0, var_405=3, var_45=1, var_46=1, var_49=3, var_52=2, var_56=5, var_59=7, var_62=6, var_66=4, var_72=2, var_74=1, var_84=3, var_95=11, var_97=10, var_99=2] [L157] input_2 = __VERIFIER_nondet_uchar() [L158] input_2 = input_2 & mask_SORT_1 [L159] input_3 = __VERIFIER_nondet_uchar() [L160] input_3 = input_3 & mask_SORT_1 [L161] input_4 = __VERIFIER_nondet_uchar() [L162] input_5 = __VERIFIER_nondet_uchar() [L163] input_5 = input_5 & mask_SORT_1 [L164] input_7 = __VERIFIER_nondet_uchar() [L165] input_7 = input_7 & mask_SORT_6 [L166] input_9 = __VERIFIER_nondet_uchar() [L167] input_9 = input_9 & mask_SORT_8 [L168] input_10 = __VERIFIER_nondet_uchar() [L169] input_10 = input_10 & mask_SORT_6 [L170] input_11 = __VERIFIER_nondet_uchar() [L171] input_11 = input_11 & mask_SORT_1 [L172] input_12 = __VERIFIER_nondet_uchar() [L173] input_13 = __VERIFIER_nondet_uchar() [L174] input_15 = __VERIFIER_nondet_uchar() [L175] input_15 = input_15 & mask_SORT_14 [L176] input_16 = __VERIFIER_nondet_uchar() [L177] input_18 = __VERIFIER_nondet_uchar() [L178] input_19 = __VERIFIER_nondet_uchar() [L179] input_20 = __VERIFIER_nondet_uchar() [L180] input_21 = __VERIFIER_nondet_uchar() [L181] input_22 = __VERIFIER_nondet_uchar() [L182] input_23 = __VERIFIER_nondet_uchar() [L183] input_24 = __VERIFIER_nondet_uchar() [L184] input_25 = __VERIFIER_nondet_uchar() [L185] input_26 = __VERIFIER_nondet_uchar() [L188] SORT_1 var_30_arg_0 = state_28; [L189] SORT_1 var_30 = ~var_30_arg_0; [L190] SORT_1 var_81_arg_0 = input_12; [L191] SORT_1 var_81_arg_1 = input_11; [L192] SORT_6 var_81 = ((SORT_6)var_81_arg_0 << 1) | var_81_arg_1; [L193] var_81 = var_81 & mask_SORT_6 [L194] SORT_6 var_82_arg_0 = var_81; [L195] var_82_arg_0 ^= var_82_arg_0 >> 4 [L196] var_82_arg_0 ^= var_82_arg_0 >> 2 [L197] var_82_arg_0 ^= var_82_arg_0 >> 1 [L198] SORT_1 var_82 = var_82_arg_0; [L199] SORT_8 var_287_arg_0 = input_9; [L200] SORT_8 var_287_arg_1 = var_52; [L201] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L202] SORT_8 var_286_arg_0 = input_9; [L203] SORT_8 var_286_arg_1 = var_46; [L204] SORT_1 var_286 = var_286_arg_0 == var_286_arg_1; [L205] SORT_8 var_285_arg_0 = input_9; [L206] SORT_8 var_285_arg_1 = var_66; [L207] SORT_1 var_285 = var_285_arg_0 == var_285_arg_1; [L208] SORT_8 var_284_arg_0 = input_9; [L209] SORT_8 var_284_arg_1 = var_56; [L210] SORT_1 var_284 = var_284_arg_0 == var_284_arg_1; [L211] SORT_1 var_288_arg_0 = var_285; [L212] SORT_1 var_288_arg_1 = var_284; [L213] SORT_6 var_288 = ((SORT_6)var_288_arg_0 << 1) | var_288_arg_1; [L214] var_288 = var_288 & mask_SORT_6 [L215] SORT_1 var_289_arg_0 = var_286; [L216] SORT_6 var_289_arg_1 = var_288; [L217] SORT_8 var_289 = ((SORT_8)var_289_arg_0 << 2) | var_289_arg_1; [L218] var_289 = var_289 & mask_SORT_8 [L219] SORT_1 var_290_arg_0 = var_287; [L220] SORT_8 var_290_arg_1 = var_289; [L221] SORT_105 var_290 = ((SORT_105)var_290_arg_0 << 3) | var_290_arg_1; [L222] var_290 = var_290 & mask_SORT_105 [L223] SORT_105 var_291_arg_0 = var_290; [L224] SORT_1 var_291 = var_291_arg_0 != 0; [L225] SORT_6 var_75_arg_0 = input_10; [L226] SORT_6 var_75_arg_1 = var_74; [L227] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L228] SORT_8 var_63_arg_0 = input_9; [L229] SORT_8 var_63_arg_1 = var_62; [L230] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L231] SORT_8 var_60_arg_0 = input_9; [L232] SORT_8 var_60_arg_1 = var_59; [L233] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L234] SORT_1 var_64_arg_0 = var_63; [L235] SORT_1 var_64_arg_1 = var_60; [L236] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L237] var_64 = var_64 & mask_SORT_1 [L238] SORT_8 var_57_arg_0 = input_9; [L239] SORT_8 var_57_arg_1 = var_56; [L240] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L241] SORT_8 var_67_arg_0 = input_9; [L242] SORT_8 var_67_arg_1 = var_66; [L243] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L244] SORT_1 var_68_arg_0 = var_57; [L245] SORT_1 var_68_arg_1 = var_67; [L246] SORT_6 var_68 = ((SORT_6)var_68_arg_0 << 1) | var_68_arg_1; [L247] var_68 = var_68 & mask_SORT_6 [L248] SORT_1 var_69_arg_0 = var_64; [L249] SORT_6 var_69_arg_1 = var_68; [L250] SORT_8 var_69 = ((SORT_8)var_69_arg_0 << 2) | var_69_arg_1; [L251] var_69 = var_69 & mask_SORT_8 [L252] SORT_8 var_70_arg_0 = var_69; [L253] SORT_1 var_70 = var_70_arg_0 != 0; [L254] SORT_1 var_61_arg_0 = var_60; [L255] SORT_1 var_61_arg_1 = var_45; [L256] SORT_1 var_61_arg_2 = var_45; [L257] EXPR var_61_arg_0 ? var_61_arg_1 : var_61_arg_2 [L257] SORT_1 var_61 = var_61_arg_0 ? var_61_arg_1 : var_61_arg_2; [L258] SORT_1 var_58_arg_0 = var_57; [L259] SORT_1 var_58_arg_1 = var_27; [L260] SORT_1 var_58_arg_2 = var_27; [L261] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L261] SORT_1 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L262] SORT_1 var_65_arg_0 = var_64; [L263] SORT_1 var_65_arg_1 = var_61; [L264] SORT_1 var_65_arg_2 = var_58; [L265] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L265] SORT_1 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L266] SORT_8 var_53_arg_0 = input_9; [L267] SORT_8 var_53_arg_1 = var_52; [L268] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L269] SORT_8 var_50_arg_0 = input_9; [L270] SORT_8 var_50_arg_1 = var_49; [L271] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L272] SORT_1 var_54_arg_0 = var_53; [L273] SORT_1 var_54_arg_1 = var_50; [L274] SORT_1 var_54 = var_54_arg_0 | var_54_arg_1; [L275] var_54 = var_54 & mask_SORT_1 [L276] SORT_1 var_51_arg_0 = var_50; [L277] SORT_1 var_51_arg_1 = var_45; [L278] SORT_1 var_51_arg_2 = var_27; [L279] EXPR var_51_arg_0 ? var_51_arg_1 : var_51_arg_2 [L279] SORT_1 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L280] SORT_8 var_47_arg_0 = input_9; [L281] SORT_8 var_47_arg_1 = var_46; [L282] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L283] SORT_1 var_48_arg_0 = var_47; [L284] SORT_1 var_48_arg_1 = var_27; [L285] SORT_1 var_48_arg_2 = var_45; [L286] EXPR var_48_arg_0 ? var_48_arg_1 : var_48_arg_2 [L286] SORT_1 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L287] SORT_1 var_55_arg_0 = var_54; [L288] SORT_1 var_55_arg_1 = var_51; [L289] SORT_1 var_55_arg_2 = var_48; [L290] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L290] SORT_1 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L291] SORT_1 var_71_arg_0 = var_70; [L292] SORT_1 var_71_arg_1 = var_65; [L293] SORT_1 var_71_arg_2 = var_55; [L294] EXPR var_71_arg_0 ? var_71_arg_1 : var_71_arg_2 [L294] SORT_1 var_71 = var_71_arg_0 ? var_71_arg_1 : var_71_arg_2; [L295] var_71 = var_71 & mask_SORT_1 [L296] SORT_6 var_73_arg_0 = input_10; [L297] SORT_6 var_73_arg_1 = var_72; [L298] SORT_1 var_73 = var_73_arg_0 == var_73_arg_1; [L299] SORT_1 var_281_arg_0 = var_75; [L300] SORT_1 var_281_arg_1 = var_73; [L301] SORT_6 var_281 = ((SORT_6)var_281_arg_0 << 1) | var_281_arg_1; [L302] var_281 = var_281 & mask_SORT_6 [L303] SORT_6 var_282_arg_0 = var_281; [L304] SORT_1 var_282 = var_282_arg_0 != 0; [L305] SORT_1 var_283_arg_0 = var_71; [L306] SORT_1 var_283_arg_1 = var_282; [L307] SORT_1 var_283_arg_2 = var_27; [L308] EXPR var_283_arg_0 ? var_283_arg_1 : var_283_arg_2 [L308] SORT_1 var_283 = var_283_arg_0 ? var_283_arg_1 : var_283_arg_2; [L309] SORT_1 var_292_arg_0 = var_291; [L310] SORT_1 var_292_arg_1 = var_75; [L311] SORT_1 var_292_arg_2 = var_283; [L312] EXPR var_292_arg_0 ? var_292_arg_1 : var_292_arg_2 [L312] SORT_1 var_292 = var_292_arg_0 ? var_292_arg_1 : var_292_arg_2; [L313] SORT_6 var_85_arg_0 = input_7; [L314] SORT_6 var_85_arg_1 = var_84; [L315] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L316] SORT_1 var_293_arg_0 = var_292; [L317] SORT_1 var_293_arg_1 = var_85; [L318] SORT_6 var_293 = ((SORT_6)var_293_arg_0 << 1) | var_293_arg_1; [L319] var_293 = var_293 & mask_SORT_6 [L320] SORT_1 var_294_arg_0 = var_82; [L321] SORT_6 var_294_arg_1 = var_293; [L322] SORT_8 var_294 = ((SORT_8)var_294_arg_0 << 2) | var_294_arg_1; [L323] var_294 = var_294 & mask_SORT_8 [L324] SORT_8 var_295_arg_0 = var_294; [L325] SORT_1 var_295 = var_295_arg_0 != 0; [L326] SORT_1 var_296_arg_0 = input_13; [L327] SORT_1 var_296_arg_1 = var_295; [L328] SORT_6 var_296 = ((SORT_6)var_296_arg_0 << 1) | var_296_arg_1; [L329] var_296 = var_296 & mask_SORT_6 [L330] SORT_6 var_297_arg_0 = var_296; [L331] SORT_1 var_297 = var_297_arg_0 == mask_SORT_6; [L332] SORT_14 var_247_arg_0 = input_15; [L333] SORT_14 var_247_arg_1 = var_246; [L334] SORT_1 var_247 = var_247_arg_0 == var_247_arg_1; [L335] SORT_14 var_244_arg_0 = input_15; [L336] SORT_14 var_244_arg_1 = var_243; [L337] SORT_1 var_244 = var_244_arg_0 == var_244_arg_1; [L338] SORT_1 var_248_arg_0 = var_247; [L339] SORT_1 var_248_arg_1 = var_244; [L340] SORT_1 var_248 = var_248_arg_0 | var_248_arg_1; [L341] var_248 = var_248 & mask_SORT_1 [L342] SORT_14 var_241_arg_0 = input_15; [L343] SORT_14 var_241_arg_1 = var_240; [L344] SORT_1 var_241 = var_241_arg_0 == var_241_arg_1; [L345] SORT_14 var_251_arg_0 = input_15; [L346] SORT_14 var_251_arg_1 = var_250; [L347] SORT_1 var_251 = var_251_arg_0 == var_251_arg_1; [L348] SORT_1 var_252_arg_0 = var_241; [L349] SORT_1 var_252_arg_1 = var_251; [L350] SORT_6 var_252 = ((SORT_6)var_252_arg_0 << 1) | var_252_arg_1; [L351] var_252 = var_252 & mask_SORT_6 [L352] SORT_1 var_253_arg_0 = var_248; [L353] SORT_6 var_253_arg_1 = var_252; [L354] SORT_8 var_253 = ((SORT_8)var_253_arg_0 << 2) | var_253_arg_1; [L355] var_253 = var_253 & mask_SORT_8 [L356] SORT_8 var_254_arg_0 = var_253; [L357] SORT_1 var_254 = var_254_arg_0 != 0; [L358] SORT_14 var_237_arg_0 = input_15; [L359] SORT_14 var_237_arg_1 = var_236; [L360] SORT_1 var_237 = var_237_arg_0 == var_237_arg_1; [L361] SORT_14 var_234_arg_0 = input_15; [L362] SORT_14 var_234_arg_1 = var_233; [L363] SORT_1 var_234 = var_234_arg_0 == var_234_arg_1; [L364] SORT_1 var_238_arg_0 = var_237; [L365] SORT_1 var_238_arg_1 = var_234; [L366] SORT_1 var_238 = var_238_arg_0 | var_238_arg_1; [L367] var_238 = var_238 & mask_SORT_1 [L368] SORT_14 var_231_arg_0 = input_15; [L369] SORT_14 var_231_arg_1 = var_230; [L370] SORT_1 var_231 = var_231_arg_0 == var_231_arg_1; [L371] SORT_14 var_257_arg_0 = input_15; [L372] SORT_14 var_257_arg_1 = var_256; [L373] SORT_1 var_257 = var_257_arg_0 == var_257_arg_1; [L374] SORT_1 var_258_arg_0 = var_231; [L375] SORT_1 var_258_arg_1 = var_257; [L376] SORT_6 var_258 = ((SORT_6)var_258_arg_0 << 1) | var_258_arg_1; [L377] var_258 = var_258 & mask_SORT_6 [L378] SORT_1 var_259_arg_0 = var_238; [L379] SORT_6 var_259_arg_1 = var_258; [L380] SORT_8 var_259 = ((SORT_8)var_259_arg_0 << 2) | var_259_arg_1; [L381] var_259 = var_259 & mask_SORT_8 [L382] SORT_1 var_260_arg_0 = var_254; [L383] SORT_8 var_260_arg_1 = var_259; [L384] SORT_105 var_260 = ((SORT_105)var_260_arg_0 << 3) | var_260_arg_1; [L385] var_260 = var_260 & mask_SORT_105 [L386] SORT_105 var_261_arg_0 = var_260; [L387] SORT_1 var_261 = var_261_arg_0 != 0; [L388] SORT_14 var_222_arg_0 = input_15; [L389] SORT_14 var_222_arg_1 = var_221; [L390] SORT_1 var_222 = var_222_arg_0 == var_222_arg_1; [L391] SORT_14 var_219_arg_0 = input_15; [L392] SORT_14 var_219_arg_1 = var_218; [L393] SORT_1 var_219 = var_219_arg_0 == var_219_arg_1; [L394] SORT_1 var_223_arg_0 = var_222; [L395] SORT_1 var_223_arg_1 = var_219; [L396] SORT_1 var_223 = var_223_arg_0 | var_223_arg_1; [L397] var_223 = var_223 & mask_SORT_1 [L398] SORT_14 var_216_arg_0 = input_15; [L399] SORT_14 var_216_arg_1 = var_117; [L400] SORT_1 var_216 = var_216_arg_0 == var_216_arg_1; [L401] SORT_14 var_225_arg_0 = input_15; [L402] SORT_14 var_225_arg_1 = var_119; [L403] SORT_1 var_225 = var_225_arg_0 == var_225_arg_1; [L404] SORT_1 var_226_arg_0 = var_216; [L405] SORT_1 var_226_arg_1 = var_225; [L406] SORT_6 var_226 = ((SORT_6)var_226_arg_0 << 1) | var_226_arg_1; [L407] var_226 = var_226 & mask_SORT_6 [L408] SORT_1 var_227_arg_0 = var_223; [L409] SORT_6 var_227_arg_1 = var_226; [L410] SORT_8 var_227 = ((SORT_8)var_227_arg_0 << 2) | var_227_arg_1; [L411] var_227 = var_227 & mask_SORT_8 [L412] SORT_8 var_228_arg_0 = var_227; [L413] SORT_1 var_228 = var_228_arg_0 != 0; [L414] SORT_14 var_213_arg_0 = input_15; [L415] SORT_14 var_213_arg_1 = var_123; [L416] SORT_1 var_213 = var_213_arg_0 == var_213_arg_1; [L417] SORT_14 var_211_arg_0 = input_15; [L418] SORT_14 var_211_arg_1 = var_121; [L419] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L420] SORT_1 var_214_arg_0 = var_213; [L421] SORT_1 var_214_arg_1 = var_211; [L422] SORT_1 var_214 = var_214_arg_0 | var_214_arg_1; [L423] var_214 = var_214 & mask_SORT_1 [L424] SORT_14 var_209_arg_0 = input_15; [L425] SORT_14 var_209_arg_1 = var_125; [L426] SORT_1 var_209 = var_209_arg_0 == var_209_arg_1; [L427] SORT_14 var_263_arg_0 = input_15; [L428] SORT_14 var_263_arg_1 = var_127; [L429] SORT_1 var_263 = var_263_arg_0 == var_263_arg_1; [L430] SORT_1 var_264_arg_0 = var_209; [L431] SORT_1 var_264_arg_1 = var_263; [L432] SORT_6 var_264 = ((SORT_6)var_264_arg_0 << 1) | var_264_arg_1; [L433] var_264 = var_264 & mask_SORT_6 [L434] SORT_1 var_265_arg_0 = var_214; [L435] SORT_6 var_265_arg_1 = var_264; [L436] SORT_8 var_265 = ((SORT_8)var_265_arg_0 << 2) | var_265_arg_1; [L437] var_265 = var_265 & mask_SORT_8 [L438] SORT_1 var_266_arg_0 = var_228; [L439] SORT_8 var_266_arg_1 = var_265; [L440] SORT_105 var_266 = ((SORT_105)var_266_arg_0 << 3) | var_266_arg_1; [L441] var_266 = var_266 & mask_SORT_105 [L442] SORT_1 var_267_arg_0 = var_261; [L443] SORT_105 var_267_arg_1 = var_266; [L444] SORT_14 var_267 = ((SORT_14)var_267_arg_0 << 4) | var_267_arg_1; [L445] var_267 = var_267 & mask_SORT_14 [L446] SORT_14 var_268_arg_0 = var_267; [L447] SORT_1 var_268 = var_268_arg_0 != 0; [L448] SORT_1 var_245_arg_0 = var_244; [L449] SORT_1 var_245_arg_1 = var_45; [L450] SORT_1 var_245_arg_2 = var_45; [L451] EXPR var_245_arg_0 ? var_245_arg_1 : var_245_arg_2 [L451] SORT_1 var_245 = var_245_arg_0 ? var_245_arg_1 : var_245_arg_2; [L452] SORT_1 var_242_arg_0 = var_241; [L453] SORT_1 var_242_arg_1 = var_45; [L454] SORT_1 var_242_arg_2 = var_45; [L455] EXPR var_242_arg_0 ? var_242_arg_1 : var_242_arg_2 [L455] SORT_1 var_242 = var_242_arg_0 ? var_242_arg_1 : var_242_arg_2; [L456] SORT_1 var_249_arg_0 = var_248; [L457] SORT_1 var_249_arg_1 = var_245; [L458] SORT_1 var_249_arg_2 = var_242; [L459] EXPR var_249_arg_0 ? var_249_arg_1 : var_249_arg_2 [L459] SORT_1 var_249 = var_249_arg_0 ? var_249_arg_1 : var_249_arg_2; [L460] SORT_1 var_235_arg_0 = var_234; [L461] SORT_1 var_235_arg_1 = var_45; [L462] SORT_1 var_235_arg_2 = var_45; [L463] EXPR var_235_arg_0 ? var_235_arg_1 : var_235_arg_2 [L463] SORT_1 var_235 = var_235_arg_0 ? var_235_arg_1 : var_235_arg_2; [L464] SORT_1 var_232_arg_0 = var_231; [L465] SORT_1 var_232_arg_1 = var_45; [L466] SORT_1 var_232_arg_2 = var_45; [L467] EXPR var_232_arg_0 ? var_232_arg_1 : var_232_arg_2 [L467] SORT_1 var_232 = var_232_arg_0 ? var_232_arg_1 : var_232_arg_2; [L468] SORT_1 var_239_arg_0 = var_238; [L469] SORT_1 var_239_arg_1 = var_235; [L470] SORT_1 var_239_arg_2 = var_232; [L471] EXPR var_239_arg_0 ? var_239_arg_1 : var_239_arg_2 [L471] SORT_1 var_239 = var_239_arg_0 ? var_239_arg_1 : var_239_arg_2; [L472] SORT_1 var_255_arg_0 = var_254; [L473] SORT_1 var_255_arg_1 = var_249; [L474] SORT_1 var_255_arg_2 = var_239; [L475] EXPR var_255_arg_0 ? var_255_arg_1 : var_255_arg_2 [L475] SORT_1 var_255 = var_255_arg_0 ? var_255_arg_1 : var_255_arg_2; [L476] SORT_1 var_220_arg_0 = var_219; [L477] SORT_1 var_220_arg_1 = var_45; [L478] SORT_1 var_220_arg_2 = var_45; [L479] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L479] SORT_1 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L480] SORT_1 var_217_arg_0 = var_216; [L481] SORT_1 var_217_arg_1 = var_27; [L482] SORT_1 var_217_arg_2 = var_27; [L483] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L483] SORT_1 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L484] SORT_1 var_224_arg_0 = var_223; [L485] SORT_1 var_224_arg_1 = var_220; [L486] SORT_1 var_224_arg_2 = var_217; [L487] EXPR var_224_arg_0 ? var_224_arg_1 : var_224_arg_2 [L487] SORT_1 var_224 = var_224_arg_0 ? var_224_arg_1 : var_224_arg_2; [L488] SORT_1 var_212_arg_0 = var_211; [L489] SORT_1 var_212_arg_1 = var_27; [L490] SORT_1 var_212_arg_2 = var_27; [L491] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L491] SORT_1 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L492] SORT_1 var_210_arg_0 = var_209; [L493] SORT_1 var_210_arg_1 = var_27; [L494] SORT_1 var_210_arg_2 = var_27; [L495] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L495] SORT_1 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L496] SORT_1 var_215_arg_0 = var_214; [L497] SORT_1 var_215_arg_1 = var_212; [L498] SORT_1 var_215_arg_2 = var_210; [L499] EXPR var_215_arg_0 ? var_215_arg_1 : var_215_arg_2 [L499] SORT_1 var_215 = var_215_arg_0 ? var_215_arg_1 : var_215_arg_2; [L500] SORT_1 var_229_arg_0 = var_228; [L501] SORT_1 var_229_arg_1 = var_224; [L502] SORT_1 var_229_arg_2 = var_215; [L503] EXPR var_229_arg_0 ? var_229_arg_1 : var_229_arg_2 [L503] SORT_1 var_229 = var_229_arg_0 ? var_229_arg_1 : var_229_arg_2; [L504] SORT_1 var_262_arg_0 = var_261; [L505] SORT_1 var_262_arg_1 = var_255; [L506] SORT_1 var_262_arg_2 = var_229; [L507] EXPR var_262_arg_0 ? var_262_arg_1 : var_262_arg_2 [L507] SORT_1 var_262 = var_262_arg_0 ? var_262_arg_1 : var_262_arg_2; [L508] SORT_14 var_194_arg_0 = input_15; [L509] SORT_14 var_194_arg_1 = var_131; [L510] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L511] SORT_14 var_192_arg_0 = input_15; [L512] SORT_14 var_192_arg_1 = var_129; [L513] SORT_1 var_192 = var_192_arg_0 == var_192_arg_1; [L514] SORT_1 var_195_arg_0 = var_194; [L515] SORT_1 var_195_arg_1 = var_192; [L516] SORT_1 var_195 = var_195_arg_0 | var_195_arg_1; [L517] var_195 = var_195 & mask_SORT_1 [L518] SORT_14 var_190_arg_0 = input_15; [L519] SORT_14 var_190_arg_1 = var_189; [L520] SORT_1 var_190 = var_190_arg_0 == var_190_arg_1; [L521] SORT_14 var_198_arg_0 = input_15; [L522] SORT_14 var_198_arg_1 = var_197; [L523] SORT_1 var_198 = var_198_arg_0 == var_198_arg_1; [L524] SORT_1 var_199_arg_0 = var_190; [L525] SORT_1 var_199_arg_1 = var_198; [L526] SORT_6 var_199 = ((SORT_6)var_199_arg_0 << 1) | var_199_arg_1; [L527] var_199 = var_199 & mask_SORT_6 [L528] SORT_1 var_200_arg_0 = var_195; [L529] SORT_6 var_200_arg_1 = var_199; [L530] SORT_8 var_200 = ((SORT_8)var_200_arg_0 << 2) | var_200_arg_1; [L531] var_200 = var_200 & mask_SORT_8 [L532] SORT_8 var_201_arg_0 = var_200; [L533] SORT_1 var_201 = var_201_arg_0 != 0; [L534] SORT_14 var_186_arg_0 = input_15; [L535] SORT_14 var_186_arg_1 = var_97; [L536] SORT_1 var_186 = var_186_arg_0 == var_186_arg_1; [L537] SORT_14 var_184_arg_0 = input_15; [L538] SORT_14 var_184_arg_1 = var_95; [L539] SORT_1 var_184 = var_184_arg_0 == var_184_arg_1; [L540] SORT_1 var_187_arg_0 = var_186; [L541] SORT_1 var_187_arg_1 = var_184; [L542] SORT_1 var_187 = var_187_arg_0 | var_187_arg_1; [L543] var_187 = var_187 & mask_SORT_1 [L544] SORT_14 var_182_arg_0 = input_15; [L545] SORT_14 var_182_arg_1 = var_101; [L546] SORT_1 var_182 = var_182_arg_0 == var_182_arg_1; [L547] SORT_14 var_203_arg_0 = input_15; [L548] SORT_14 var_203_arg_1 = var_133; [L549] SORT_1 var_203 = var_203_arg_0 == var_203_arg_1; [L550] SORT_1 var_204_arg_0 = var_182; [L551] SORT_1 var_204_arg_1 = var_203; [L552] SORT_6 var_204 = ((SORT_6)var_204_arg_0 << 1) | var_204_arg_1; [L553] var_204 = var_204 & mask_SORT_6 [L554] SORT_1 var_205_arg_0 = var_187; [L555] SORT_6 var_205_arg_1 = var_204; [L556] SORT_8 var_205 = ((SORT_8)var_205_arg_0 << 2) | var_205_arg_1; [L557] var_205 = var_205 & mask_SORT_8 [L558] SORT_1 var_206_arg_0 = var_201; [L559] SORT_8 var_206_arg_1 = var_205; [L560] SORT_105 var_206 = ((SORT_105)var_206_arg_0 << 3) | var_206_arg_1; [L561] var_206 = var_206 & mask_SORT_105 [L562] SORT_105 var_207_arg_0 = var_206; [L563] SORT_1 var_207 = var_207_arg_0 != 0; [L564] SORT_1 var_193_arg_0 = var_192; [L565] SORT_1 var_193_arg_1 = var_27; [L566] SORT_1 var_193_arg_2 = var_27; [L567] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L567] SORT_1 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L568] SORT_1 var_191_arg_0 = var_190; [L569] SORT_1 var_191_arg_1 = var_45; [L570] SORT_1 var_191_arg_2 = var_45; [L571] EXPR var_191_arg_0 ? var_191_arg_1 : var_191_arg_2 [L571] SORT_1 var_191 = var_191_arg_0 ? var_191_arg_1 : var_191_arg_2; [L572] SORT_1 var_196_arg_0 = var_195; [L573] SORT_1 var_196_arg_1 = var_193; [L574] SORT_1 var_196_arg_2 = var_191; [L575] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L575] SORT_1 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L576] SORT_1 var_185_arg_0 = var_184; [L577] SORT_1 var_185_arg_1 = var_27; [L578] SORT_1 var_185_arg_2 = var_27; [L579] EXPR var_185_arg_0 ? var_185_arg_1 : var_185_arg_2 [L579] SORT_1 var_185 = var_185_arg_0 ? var_185_arg_1 : var_185_arg_2; [L580] SORT_1 var_183_arg_0 = var_182; [L581] SORT_1 var_183_arg_1 = var_27; [L582] SORT_1 var_183_arg_2 = var_27; [L583] EXPR var_183_arg_0 ? var_183_arg_1 : var_183_arg_2 [L583] SORT_1 var_183 = var_183_arg_0 ? var_183_arg_1 : var_183_arg_2; [L584] SORT_1 var_188_arg_0 = var_187; [L585] SORT_1 var_188_arg_1 = var_185; [L586] SORT_1 var_188_arg_2 = var_183; [L587] EXPR var_188_arg_0 ? var_188_arg_1 : var_188_arg_2 [L587] SORT_1 var_188 = var_188_arg_0 ? var_188_arg_1 : var_188_arg_2; [L588] SORT_1 var_202_arg_0 = var_201; [L589] SORT_1 var_202_arg_1 = var_196; [L590] SORT_1 var_202_arg_2 = var_188; [L591] EXPR var_202_arg_0 ? var_202_arg_1 : var_202_arg_2 [L591] SORT_1 var_202 = var_202_arg_0 ? var_202_arg_1 : var_202_arg_2; [L592] SORT_14 var_174_arg_0 = input_15; [L593] SORT_14 var_174_arg_1 = var_135; [L594] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L595] SORT_14 var_172_arg_0 = input_15; [L596] SORT_14 var_172_arg_1 = var_171; [L597] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L598] SORT_1 var_175_arg_0 = var_174; [L599] SORT_1 var_175_arg_1 = var_172; [L600] SORT_1 var_175 = var_175_arg_0 | var_175_arg_1; [L601] var_175 = var_175 & mask_SORT_1 [L602] SORT_14 var_169_arg_0 = input_15; [L603] SORT_14 var_169_arg_1 = var_139; [L604] SORT_1 var_169 = var_169_arg_0 == var_169_arg_1; [L605] SORT_14 var_177_arg_0 = input_15; [L606] SORT_14 var_177_arg_1 = var_159; [L607] SORT_1 var_177 = var_177_arg_0 == var_177_arg_1; [L608] SORT_1 var_178_arg_0 = var_169; [L609] SORT_1 var_178_arg_1 = var_177; [L610] SORT_6 var_178 = ((SORT_6)var_178_arg_0 << 1) | var_178_arg_1; [L611] var_178 = var_178 & mask_SORT_6 [L612] SORT_1 var_179_arg_0 = var_175; [L613] SORT_6 var_179_arg_1 = var_178; [L614] SORT_8 var_179 = ((SORT_8)var_179_arg_0 << 2) | var_179_arg_1; [L615] var_179 = var_179 & mask_SORT_8 [L616] SORT_8 var_180_arg_0 = var_179; [L617] SORT_1 var_180 = var_180_arg_0 != 0; [L618] SORT_1 var_173_arg_0 = var_172; [L619] SORT_1 var_173_arg_1 = var_45; [L620] SORT_1 var_173_arg_2 = var_27; [L621] EXPR var_173_arg_0 ? var_173_arg_1 : var_173_arg_2 [L621] SORT_1 var_173 = var_173_arg_0 ? var_173_arg_1 : var_173_arg_2; [L622] SORT_1 var_170_arg_0 = var_169; [L623] SORT_1 var_170_arg_1 = var_27; [L624] SORT_1 var_170_arg_2 = var_27; [L625] EXPR var_170_arg_0 ? var_170_arg_1 : var_170_arg_2 [L625] SORT_1 var_170 = var_170_arg_0 ? var_170_arg_1 : var_170_arg_2; [L626] SORT_1 var_176_arg_0 = var_175; [L627] SORT_1 var_176_arg_1 = var_173; [L628] SORT_1 var_176_arg_2 = var_170; [L629] EXPR var_176_arg_0 ? var_176_arg_1 : var_176_arg_2 [L629] SORT_1 var_176 = var_176_arg_0 ? var_176_arg_1 : var_176_arg_2; [L630] SORT_14 var_166_arg_0 = input_15; [L631] SORT_14 var_166_arg_1 = var_99; [L632] SORT_1 var_166 = var_166_arg_0 == var_166_arg_1; [L633] SORT_14 var_164_arg_0 = input_15; [L634] SORT_14 var_164_arg_1 = var_137; [L635] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L636] SORT_1 var_167_arg_0 = var_166; [L637] SORT_1 var_167_arg_1 = var_164; [L638] SORT_1 var_167 = var_167_arg_0 | var_167_arg_1; [L639] var_167 = var_167 & mask_SORT_1 [L640] SORT_1 var_165_arg_0 = var_164; [L641] SORT_1 var_165_arg_1 = var_27; [L642] SORT_1 var_165_arg_2 = var_27; [L643] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L643] SORT_1 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L644] SORT_14 var_162_arg_0 = input_15; [L645] SORT_14 var_162_arg_1 = var_161; [L646] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L647] SORT_1 var_163_arg_0 = var_162; [L648] SORT_1 var_163_arg_1 = var_45; [L649] SORT_1 var_163_arg_2 = var_45; [L650] EXPR var_163_arg_0 ? var_163_arg_1 : var_163_arg_2 [L650] SORT_1 var_163 = var_163_arg_0 ? var_163_arg_1 : var_163_arg_2; [L651] SORT_1 var_168_arg_0 = var_167; [L652] SORT_1 var_168_arg_1 = var_165; [L653] SORT_1 var_168_arg_2 = var_163; [L654] EXPR var_168_arg_0 ? var_168_arg_1 : var_168_arg_2 [L654] SORT_1 var_168 = var_168_arg_0 ? var_168_arg_1 : var_168_arg_2; [L655] SORT_1 var_181_arg_0 = var_180; [L656] SORT_1 var_181_arg_1 = var_176; [L657] SORT_1 var_181_arg_2 = var_168; [L658] EXPR var_181_arg_0 ? var_181_arg_1 : var_181_arg_2 [L658] SORT_1 var_181 = var_181_arg_0 ? var_181_arg_1 : var_181_arg_2; [L659] SORT_1 var_208_arg_0 = var_207; [L660] SORT_1 var_208_arg_1 = var_202; [L661] SORT_1 var_208_arg_2 = var_181; [L662] EXPR var_208_arg_0 ? var_208_arg_1 : var_208_arg_2 [L662] SORT_1 var_208 = var_208_arg_0 ? var_208_arg_1 : var_208_arg_2; [L663] SORT_1 var_269_arg_0 = var_268; [L664] SORT_1 var_269_arg_1 = var_262; [L665] SORT_1 var_269_arg_2 = var_208; [L666] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L666] SORT_1 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L667] SORT_14 var_160_arg_0 = input_15; [L668] SORT_14 var_160_arg_1 = var_159; [L669] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L670] SORT_14 var_140_arg_0 = input_15; [L671] SORT_14 var_140_arg_1 = var_139; [L672] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L673] SORT_14 var_138_arg_0 = input_15; [L674] SORT_14 var_138_arg_1 = var_137; [L675] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L676] SORT_14 var_136_arg_0 = input_15; [L677] SORT_14 var_136_arg_1 = var_135; [L678] SORT_1 var_136 = var_136_arg_0 == var_136_arg_1; [L679] SORT_14 var_134_arg_0 = input_15; [L680] SORT_14 var_134_arg_1 = var_133; [L681] SORT_1 var_134 = var_134_arg_0 == var_134_arg_1; [L682] SORT_14 var_132_arg_0 = input_15; [L683] SORT_14 var_132_arg_1 = var_131; [L684] SORT_1 var_132 = var_132_arg_0 == var_132_arg_1; [L685] SORT_14 var_130_arg_0 = input_15; [L686] SORT_14 var_130_arg_1 = var_129; [L687] SORT_1 var_130 = var_130_arg_0 == var_130_arg_1; [L688] SORT_14 var_128_arg_0 = input_15; [L689] SORT_14 var_128_arg_1 = var_127; [L690] SORT_1 var_128 = var_128_arg_0 == var_128_arg_1; [L691] SORT_14 var_126_arg_0 = input_15; [L692] SORT_14 var_126_arg_1 = var_125; [L693] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L694] SORT_14 var_124_arg_0 = input_15; [L695] SORT_14 var_124_arg_1 = var_123; [L696] SORT_1 var_124 = var_124_arg_0 == var_124_arg_1; [L697] SORT_14 var_122_arg_0 = input_15; [L698] SORT_14 var_122_arg_1 = var_121; [L699] SORT_1 var_122 = var_122_arg_0 == var_122_arg_1; [L700] SORT_14 var_120_arg_0 = input_15; [L701] SORT_14 var_120_arg_1 = var_119; [L702] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L703] SORT_14 var_118_arg_0 = input_15; [L704] SORT_14 var_118_arg_1 = var_117; [L705] SORT_1 var_118 = var_118_arg_0 == var_118_arg_1; [L706] SORT_1 var_141_arg_0 = var_120; [L707] SORT_1 var_141_arg_1 = var_118; [L708] SORT_6 var_141 = ((SORT_6)var_141_arg_0 << 1) | var_141_arg_1; [L709] var_141 = var_141 & mask_SORT_6 [L710] SORT_1 var_142_arg_0 = var_122; [L711] SORT_6 var_142_arg_1 = var_141; [L712] SORT_8 var_142 = ((SORT_8)var_142_arg_0 << 2) | var_142_arg_1; [L713] var_142 = var_142 & mask_SORT_8 [L714] SORT_1 var_143_arg_0 = var_124; [L715] SORT_8 var_143_arg_1 = var_142; [L716] SORT_105 var_143 = ((SORT_105)var_143_arg_0 << 3) | var_143_arg_1; [L717] var_143 = var_143 & mask_SORT_105 [L718] SORT_1 var_144_arg_0 = var_126; [L719] SORT_105 var_144_arg_1 = var_143; [L720] SORT_14 var_144 = ((SORT_14)var_144_arg_0 << 4) | var_144_arg_1; [L721] var_144 = var_144 & mask_SORT_14 [L722] SORT_1 var_146_arg_0 = var_128; [L723] SORT_14 var_146_arg_1 = var_144; [L724] SORT_145 var_146 = ((SORT_145)var_146_arg_0 << 5) | var_146_arg_1; [L725] var_146 = var_146 & mask_SORT_145 [L726] SORT_1 var_148_arg_0 = var_130; [L727] SORT_145 var_148_arg_1 = var_146; [L728] SORT_147 var_148 = ((SORT_147)var_148_arg_0 << 6) | var_148_arg_1; [L729] var_148 = var_148 & mask_SORT_147 [L730] SORT_1 var_149_arg_0 = var_132; [L731] SORT_147 var_149_arg_1 = var_148; [L732] SORT_17 var_149 = ((SORT_17)var_149_arg_0 << 7) | var_149_arg_1; [L733] var_149 = var_149 & mask_SORT_17 [L734] SORT_1 var_151_arg_0 = var_134; [L735] SORT_17 var_151_arg_1 = var_149; [L736] SORT_150 var_151 = ((SORT_150)var_151_arg_0 << 8) | var_151_arg_1; [L737] var_151 = var_151 & mask_SORT_150 [L738] SORT_1 var_153_arg_0 = var_136; [L739] SORT_150 var_153_arg_1 = var_151; [L740] SORT_152 var_153 = ((SORT_152)var_153_arg_0 << 9) | var_153_arg_1; [L741] var_153 = var_153 & mask_SORT_152 [L742] SORT_1 var_155_arg_0 = var_138; [L743] SORT_152 var_155_arg_1 = var_153; [L744] SORT_154 var_155 = ((SORT_154)var_155_arg_0 << 10) | var_155_arg_1; [L745] var_155 = var_155 & mask_SORT_154 [L746] SORT_1 var_157_arg_0 = var_140; [L747] SORT_154 var_157_arg_1 = var_155; [L748] SORT_156 var_157 = ((SORT_156)var_157_arg_0 << 11) | var_157_arg_1; [L749] var_157 = var_157 & mask_SORT_156 [L750] SORT_156 var_158_arg_0 = var_157; [L751] SORT_1 var_158 = var_158_arg_0 != 0; [L752] SORT_1 var_270_arg_0 = var_160; [L753] SORT_1 var_270_arg_1 = var_158; [L754] SORT_6 var_270 = ((SORT_6)var_270_arg_0 << 1) | var_270_arg_1; [L755] var_270 = var_270 & mask_SORT_6 [L756] SORT_1 var_271_arg_0 = var_269; [L757] SORT_6 var_271_arg_1 = var_270; [L758] SORT_8 var_271 = ((SORT_8)var_271_arg_0 << 2) | var_271_arg_1; [L759] var_271 = var_271 & mask_SORT_8 [L760] SORT_8 var_272_arg_0 = var_271; [L761] SORT_1 var_272 = var_272_arg_0 != 0; [L762] SORT_1 var_86_arg_0 = var_85; [L763] SORT_1 var_86 = ~var_86_arg_0; [L764] var_86 = var_86 & mask_SORT_1 [L765] SORT_1 var_87_arg_0 = input_13; [L766] SORT_1 var_87_arg_1 = var_86; [L767] SORT_6 var_87 = ((SORT_6)var_87_arg_0 << 1) | var_87_arg_1; [L768] var_87 = var_87 & mask_SORT_6 [L769] SORT_6 var_88_arg_0 = var_87; [L770] SORT_1 var_88 = var_88_arg_0 == mask_SORT_6; [L771] SORT_1 var_273_arg_0 = var_272; [L772] SORT_1 var_273_arg_1 = var_88; [L773] SORT_6 var_273 = ((SORT_6)var_273_arg_0 << 1) | var_273_arg_1; [L774] var_273 = var_273 & mask_SORT_6 [L775] SORT_1 var_274_arg_0 = var_82; [L776] SORT_6 var_274_arg_1 = var_273; [L777] SORT_8 var_274 = ((SORT_8)var_274_arg_0 << 2) | var_274_arg_1; [L778] var_274 = var_274 & mask_SORT_8 [L779] SORT_8 var_275_arg_0 = var_274; [L780] SORT_1 var_275 = var_275_arg_0 == mask_SORT_8; [L781] SORT_1 var_114_arg_0 = input_13; [L782] SORT_1 var_114 = ~var_114_arg_0; [L783] SORT_1 var_112_arg_0 = input_13; [L784] SORT_1 var_112_arg_1 = var_85; [L785] SORT_6 var_112 = ((SORT_6)var_112_arg_0 << 1) | var_112_arg_1; [L786] var_112 = var_112 & mask_SORT_6 [L787] SORT_6 var_113_arg_0 = var_112; [L788] SORT_1 var_113 = var_113_arg_0 == mask_SORT_6; [L789] SORT_1 var_115_arg_0 = var_114; [L790] SORT_1 var_115_arg_1 = var_113; [L791] SORT_6 var_115 = ((SORT_6)var_115_arg_0 << 1) | var_115_arg_1; [L792] var_115 = var_115 & mask_SORT_6 [L793] SORT_6 var_116_arg_0 = var_115; [L794] SORT_1 var_116 = var_116_arg_0 != 0; [L795] SORT_1 var_276_arg_0 = var_275; [L796] SORT_1 var_276_arg_1 = var_116; [L797] SORT_6 var_276 = ((SORT_6)var_276_arg_0 << 1) | var_276_arg_1; [L798] var_276 = var_276 & mask_SORT_6 [L799] SORT_6 var_277_arg_0 = var_276; [L800] SORT_1 var_277 = var_277_arg_0 != 0; [L801] SORT_14 var_102_arg_0 = input_15; [L802] SORT_14 var_102_arg_1 = var_101; [L803] SORT_1 var_102 = var_102_arg_0 == var_102_arg_1; [L804] SORT_14 var_100_arg_0 = input_15; [L805] SORT_14 var_100_arg_1 = var_99; [L806] SORT_1 var_100 = var_100_arg_0 == var_100_arg_1; [L807] SORT_14 var_98_arg_0 = input_15; [L808] SORT_14 var_98_arg_1 = var_97; [L809] SORT_1 var_98 = var_98_arg_0 == var_98_arg_1; [L810] SORT_14 var_96_arg_0 = input_15; [L811] SORT_14 var_96_arg_1 = var_95; [L812] SORT_1 var_96 = var_96_arg_0 == var_96_arg_1; [L813] SORT_1 var_103_arg_0 = var_98; [L814] SORT_1 var_103_arg_1 = var_96; [L815] SORT_6 var_103 = ((SORT_6)var_103_arg_0 << 1) | var_103_arg_1; [L816] var_103 = var_103 & mask_SORT_6 [L817] SORT_1 var_104_arg_0 = var_100; [L818] SORT_6 var_104_arg_1 = var_103; [L819] SORT_8 var_104 = ((SORT_8)var_104_arg_0 << 2) | var_104_arg_1; [L820] var_104 = var_104 & mask_SORT_8 [L821] SORT_1 var_106_arg_0 = var_102; [L822] SORT_8 var_106_arg_1 = var_104; [L823] SORT_105 var_106 = ((SORT_105)var_106_arg_0 << 3) | var_106_arg_1; [L824] var_106 = var_106 & mask_SORT_105 [L825] SORT_105 var_107_arg_0 = var_106; [L826] SORT_1 var_107 = var_107_arg_0 != 0; [L827] SORT_1 var_108_arg_0 = var_107; [L828] SORT_1 var_108_arg_1 = var_88; [L829] SORT_6 var_108 = ((SORT_6)var_108_arg_0 << 1) | var_108_arg_1; [L830] var_108 = var_108 & mask_SORT_6 [L831] SORT_1 var_109_arg_0 = var_82; [L832] SORT_6 var_109_arg_1 = var_108; [L833] SORT_8 var_109 = ((SORT_8)var_109_arg_0 << 2) | var_109_arg_1; [L834] var_109 = var_109 & mask_SORT_8 [L835] SORT_8 var_110_arg_0 = var_109; [L836] SORT_1 var_110 = var_110_arg_0 == mask_SORT_8; [L837] SORT_1 var_76_arg_0 = var_75; [L838] SORT_1 var_76 = ~var_76_arg_0; [L839] SORT_1 var_92_arg_0 = var_76; [L840] SORT_1 var_92_arg_1 = var_73; [L841] SORT_6 var_92 = ((SORT_6)var_92_arg_0 << 1) | var_92_arg_1; [L842] var_92 = var_92 & mask_SORT_6 [L843] SORT_6 var_93_arg_0 = var_92; [L844] SORT_1 var_93 = var_93_arg_0 == mask_SORT_6; [L845] SORT_1 var_94_arg_0 = var_93; [L846] SORT_1 var_94_arg_1 = var_75; [L847] SORT_6 var_94 = ((SORT_6)var_94_arg_0 << 1) | var_94_arg_1; [L848] SORT_1 var_83_arg_0 = var_82; [L849] SORT_1 var_83 = ~var_83_arg_0; [L850] var_83 = var_83 & mask_SORT_1 [L851] SORT_1 var_89_arg_0 = var_88; [L852] SORT_1 var_89_arg_1 = var_83; [L853] SORT_6 var_89 = ((SORT_6)var_89_arg_0 << 1) | var_89_arg_1; [L854] var_89 = var_89 & mask_SORT_6 [L855] SORT_6 var_90_arg_0 = var_89; [L856] SORT_1 var_90 = var_90_arg_0 == mask_SORT_6; [L857] SORT_1 var_77_arg_0 = var_73; [L858] SORT_1 var_77_arg_1 = var_71; [L859] SORT_6 var_77 = ((SORT_6)var_77_arg_0 << 1) | var_77_arg_1; [L860] var_77 = var_77 & mask_SORT_6 [L861] SORT_1 var_78_arg_0 = var_76; [L862] SORT_6 var_78_arg_1 = var_77; [L863] SORT_8 var_78 = ((SORT_8)var_78_arg_0 << 2) | var_78_arg_1; [L864] var_78 = var_78 & mask_SORT_8 [L865] SORT_8 var_79_arg_0 = var_78; [L866] SORT_1 var_79 = var_79_arg_0 == mask_SORT_8; [L867] SORT_1 var_80_arg_0 = var_79; [L868] SORT_1 var_80_arg_1 = var_27; [L869] SORT_6 var_80 = ((SORT_6)var_80_arg_0 << 1) | var_80_arg_1; [L870] SORT_1 var_91_arg_0 = var_90; [L871] SORT_6 var_91_arg_1 = var_80; [L872] SORT_6 var_91_arg_2 = var_37; [L873] EXPR var_91_arg_0 ? var_91_arg_1 : var_91_arg_2 [L873] SORT_6 var_91 = var_91_arg_0 ? var_91_arg_1 : var_91_arg_2; [L874] SORT_1 var_111_arg_0 = var_110; [L875] SORT_6 var_111_arg_1 = var_94; [L876] SORT_6 var_111_arg_2 = var_91; [L877] EXPR var_111_arg_0 ? var_111_arg_1 : var_111_arg_2 [L877] SORT_6 var_111 = var_111_arg_0 ? var_111_arg_1 : var_111_arg_2; [L878] SORT_1 var_278_arg_0 = var_277; [L879] SORT_6 var_278_arg_1 = var_37; [L880] SORT_6 var_278_arg_2 = var_111; [L881] EXPR var_278_arg_0 ? var_278_arg_1 : var_278_arg_2 [L881] SORT_6 var_278 = var_278_arg_0 ? var_278_arg_1 : var_278_arg_2; [L882] var_278 = var_278 & mask_SORT_6 [L883] SORT_145 var_280_arg_0 = var_279; [L884] SORT_6 var_280_arg_1 = var_278; [L885] SORT_17 var_280 = ((SORT_17)var_280_arg_0 << 2) | var_280_arg_1; [L886] SORT_1 var_40_arg_0 = state_34; [L887] SORT_6 var_40_arg_1 = state_38; [L888] SORT_6 var_40_arg_2 = input_19; [L889] EXPR var_40_arg_0 ? var_40_arg_1 : var_40_arg_2 [L889] SORT_6 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L890] SORT_6 var_43_arg_0 = var_40; [L891] SORT_1 var_43 = var_43_arg_0 >> 0; [L892] var_43 = var_43 & mask_SORT_1 [L893] SORT_6 var_41_arg_0 = var_40; [L894] SORT_1 var_41 = var_41_arg_0 >> 1; [L895] var_41 = var_41 & mask_SORT_1 [L896] SORT_1 var_36_arg_0 = state_34; [L897] SORT_17 var_36_arg_1 = state_32; [L898] SORT_17 var_36_arg_2 = input_18; [L899] EXPR var_36_arg_0 ? var_36_arg_1 : var_36_arg_2 [L899] SORT_17 var_36 = var_36_arg_0 ? var_36_arg_1 : var_36_arg_2; [L900] SORT_1 var_42_arg_0 = var_41; [L901] SORT_17 var_42_arg_1 = var_36; [L902] SORT_17 var_42_arg_2 = var_31; [L903] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L903] SORT_17 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L904] SORT_1 var_44_arg_0 = var_43; [L905] SORT_17 var_44_arg_1 = var_31; [L906] SORT_17 var_44_arg_2 = var_42; [L907] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L907] SORT_17 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L908] SORT_1 var_298_arg_0 = var_297; [L909] SORT_17 var_298_arg_1 = var_280; [L910] SORT_17 var_298_arg_2 = var_44; [L911] EXPR var_298_arg_0 ? var_298_arg_1 : var_298_arg_2 [L911] SORT_17 var_298 = var_298_arg_0 ? var_298_arg_1 : var_298_arg_2; [L912] var_298 = var_298 & mask_SORT_17 [L913] SORT_17 var_303_arg_0 = var_298; [L914] SORT_17 var_303_arg_1 = var_302; [L915] SORT_1 var_303 = var_303_arg_0 == var_303_arg_1; [L916] SORT_1 var_304_arg_0 = var_303; [L917] SORT_1 var_304 = ~var_304_arg_0; [L918] SORT_17 var_300_arg_0 = var_298; [L919] SORT_17 var_300_arg_1 = var_299; [L920] SORT_1 var_300 = var_300_arg_0 == var_300_arg_1; [L921] SORT_1 var_301_arg_0 = var_300; [L922] SORT_1 var_301 = ~var_301_arg_0; [L923] var_301 = var_301 & mask_SORT_1 [L924] SORT_1 var_305_arg_0 = var_304; [L925] SORT_1 var_305_arg_1 = var_301; [L926] SORT_6 var_305 = ((SORT_6)var_305_arg_0 << 1) | var_305_arg_1; [L927] var_305 = var_305 & mask_SORT_6 [L928] SORT_6 var_306_arg_0 = var_305; [L929] SORT_1 var_306 = var_306_arg_0 == mask_SORT_6; [L930] SORT_1 var_309_arg_0 = state_34; [L931] SORT_17 var_309_arg_1 = state_307; [L932] SORT_17 var_309_arg_2 = input_18; [L933] EXPR var_309_arg_0 ? var_309_arg_1 : var_309_arg_2 [L933] SORT_17 var_309 = var_309_arg_0 ? var_309_arg_1 : var_309_arg_2; [L934] SORT_1 var_310_arg_0 = var_41; [L935] SORT_17 var_310_arg_1 = var_309; [L936] SORT_17 var_310_arg_2 = var_31; [L937] EXPR var_310_arg_0 ? var_310_arg_1 : var_310_arg_2 [L937] SORT_17 var_310 = var_310_arg_0 ? var_310_arg_1 : var_310_arg_2; [L938] SORT_1 var_311_arg_0 = var_43; [L939] SORT_17 var_311_arg_1 = var_31; [L940] SORT_17 var_311_arg_2 = var_310; [L941] EXPR var_311_arg_0 ? var_311_arg_1 : var_311_arg_2 [L941] SORT_17 var_311 = var_311_arg_0 ? var_311_arg_1 : var_311_arg_2; [L942] SORT_1 var_312_arg_0 = var_297; [L943] SORT_17 var_312_arg_1 = var_280; [L944] SORT_17 var_312_arg_2 = var_311; [L945] EXPR var_312_arg_0 ? var_312_arg_1 : var_312_arg_2 [L945] SORT_17 var_312 = var_312_arg_0 ? var_312_arg_1 : var_312_arg_2; [L946] var_312 = var_312 & mask_SORT_17 [L947] SORT_17 var_313_arg_0 = var_312; [L948] SORT_17 var_313_arg_1 = var_299; [L949] SORT_1 var_313 = var_313_arg_0 == var_313_arg_1; [L950] SORT_1 var_314_arg_0 = var_313; [L951] SORT_1 var_314 = ~var_314_arg_0; [L952] var_314 = var_314 & mask_SORT_1 [L953] SORT_1 var_315_arg_0 = var_304; [L954] SORT_1 var_315_arg_1 = var_314; [L955] SORT_6 var_315 = ((SORT_6)var_315_arg_0 << 1) | var_315_arg_1; [L956] var_315 = var_315 & mask_SORT_6 [L957] SORT_6 var_316_arg_0 = var_315; [L958] SORT_1 var_316 = var_316_arg_0 == mask_SORT_6; [L959] SORT_1 var_317_arg_0 = var_306; [L960] SORT_1 var_317_arg_1 = var_316; [L961] SORT_1 var_317 = var_317_arg_0 == var_317_arg_1; [L962] SORT_1 var_318_arg_0 = var_30; [L963] SORT_1 var_318_arg_1 = var_317; [L964] SORT_1 var_318 = var_318_arg_0 | var_318_arg_1; [L965] SORT_1 var_321_arg_0 = var_318; [L966] SORT_1 var_321 = ~var_321_arg_0; [L967] SORT_1 var_322_arg_0 = var_45; [L968] SORT_1 var_322_arg_1 = var_321; [L969] SORT_1 var_322 = var_322_arg_0 & var_322_arg_1; [L970] var_322 = var_322 & mask_SORT_1 [L971] SORT_1 bad_323_arg_0 = var_322; [L972] CALL __VERIFIER_assert(!(bad_323_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: 94.9s, 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: 0.1s SsaConstructionTime, 51.1s 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 02:23:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/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_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/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_0841902f-26b9-43d6-9778-604d983bbdd6/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 3dde7400d155ca28a4f0749972f412852f62227f635858fd0984dd87b9b6bdc1 --- 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 02:23:47,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:23:47,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:23:47,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:23:47,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:23:47,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:23:47,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:23:47,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:23:47,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:23:47,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:23:47,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:23:47,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:23:47,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:23:47,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:23:47,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:23:47,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:23:47,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:23:47,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:23:47,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:23:47,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:23:47,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:23:47,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:23:47,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:23:47,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:23:47,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:23:47,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:23:47,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:23:47,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:23:47,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:23:47,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:23:47,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:23:47,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:23:47,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:23:47,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:23:47,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:23:47,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:23:47,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:23:47,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:23:47,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:23:47,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:23:47,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:23:47,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:23:47,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:23:47,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:23:47,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:23:47,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:23:47,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:23:47,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:23:47,477 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:23:47,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:23:47,477 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:23:47,478 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:23:47,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:23:47,480 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:23:47,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:23:47,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:23:47,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:23:47,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:23:47,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:23:47,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:23:47,483 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:23:47,484 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:23:47,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:23:47,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:23:47,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:23:47,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:23:47,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:23:47,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:23:47,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:47,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:23:47,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:23:47,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:23:47,487 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:23:47,487 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:23:47,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:23:47,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:23:47,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:23:47,488 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_0841902f-26b9-43d6-9778-604d983bbdd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dde7400d155ca28a4f0749972f412852f62227f635858fd0984dd87b9b6bdc1 [2022-11-03 02:23:47,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:23:47,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:23:47,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:23:47,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:23:47,989 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:23:47,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c [2022-11-03 02:23:48,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/a899503be/0eb152065e0745c0b2046f5b57b22ba6/FLAGe625068d2 [2022-11-03 02:23:48,962 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:23:48,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c [2022-11-03 02:23:48,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/a899503be/0eb152065e0745c0b2046f5b57b22ba6/FLAGe625068d2 [2022-11-03 02:23:49,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/data/a899503be/0eb152065e0745c0b2046f5b57b22ba6 [2022-11-03 02:23:49,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:23:49,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:23:49,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:49,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:23:49,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:23:49,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:49" (1/1) ... [2022-11-03 02:23:49,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a656506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:49, skipping insertion in model container [2022-11-03 02:23:49,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:49" (1/1) ... [2022-11-03 02:23:49,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:23:49,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:49,423 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_0841902f-26b9-43d6-9778-604d983bbdd6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c[1107,1120] [2022-11-03 02:23:49,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:49,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:49,878 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_0841902f-26b9-43d6-9778-604d983bbdd6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal9.c[1107,1120] [2022-11-03 02:23:50,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:50,118 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50 WrapperNode [2022-11-03 02:23:50,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:50,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:50,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:50,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:50,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,305 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1834 [2022-11-03 02:23:50,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:50,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:50,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:50,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:50,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:50,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:50,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:50,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:50,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (1/1) ... [2022-11-03 02:23:50,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:50,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:50,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:50,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:51,156 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:51,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:53,093 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:53,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:53,113 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:23:53,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:53 BoogieIcfgContainer [2022-11-03 02:23:53,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:53,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:53,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:53,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:53,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:23:49" (1/3) ... [2022-11-03 02:23:53,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ff4eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:53, skipping insertion in model container [2022-11-03 02:23:53,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:50" (2/3) ... [2022-11-03 02:23:53,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ff4eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:53, skipping insertion in model container [2022-11-03 02:23:53,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:53" (3/3) ... [2022-11-03 02:23:53,130 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal9.c [2022-11-03 02:23:53,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:53,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:23:53,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:53,277 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;@5aaa837d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:53,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:23:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:23:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:23:53,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:53,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:53,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1747459213, now seen corresponding path program 1 times [2022-11-03 02:23:53,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:53,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113883577] [2022-11-03 02:23:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:53,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:53,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:53,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:23:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:54,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:23:54,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:54,620 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 02:23:54,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:54,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:23:54,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113883577] [2022-11-03 02:23:54,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113883577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:54,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:54,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:23:54,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865730374] [2022-11-03 02:23:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:23:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:23:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:23:54,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:23:54,670 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 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 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:23:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:55,069 INFO L93 Difference]: Finished difference Result 818 states and 1225 transitions. [2022-11-03 02:23:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:23:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:23:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:55,107 INFO L225 Difference]: With dead ends: 818 [2022-11-03 02:23:55,107 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 02:23:55,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:23:55,127 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2092 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:55,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1193 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 02:23:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 207. [2022-11-03 02:23:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 02:23:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-03 02:23:55,208 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 109 [2022-11-03 02:23:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:55,209 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-03 02:23:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:23:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-03 02:23:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:23:55,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:55,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:55,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:55,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:23:55,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1158214069, now seen corresponding path program 1 times [2022-11-03 02:23:55,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:55,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221661591] [2022-11-03 02:23:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:55,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:55,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:55,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:55,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:23:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:23:56,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:56,541 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 02:23:56,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:56,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:23:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221661591] [2022-11-03 02:23:56,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221661591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:56,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:56,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:23:56,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107161637] [2022-11-03 02:23:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:56,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:23:56,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:23:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:23:56,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:23:56,547 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:23:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:56,835 INFO L93 Difference]: Finished difference Result 820 states and 1214 transitions. [2022-11-03 02:23:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:23:56,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:23:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:56,839 INFO L225 Difference]: With dead ends: 820 [2022-11-03 02:23:56,840 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:23:56,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:23:56,843 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2084 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:56,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1195 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:23:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 211. [2022-11-03 02:23:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.480952380952381) internal successors, (311), 210 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 02:23:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2022-11-03 02:23:56,860 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 109 [2022-11-03 02:23:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:56,861 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2022-11-03 02:23:56,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:23:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2022-11-03 02:23:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:23:56,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:56,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:56,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:23:57,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash 739282697, now seen corresponding path program 1 times [2022-11-03 02:23:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:57,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127878453] [2022-11-03 02:23:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:57,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:57,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:57,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:57,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:23:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:57,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:23:57,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:58,009 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 02:23:58,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:58,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:23:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127878453] [2022-11-03 02:23:58,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127878453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:58,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:58,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:23:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748787726] [2022-11-03 02:23:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:58,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:23:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:23:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:23:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:23:58,014 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:23:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:58,292 INFO L93 Difference]: Finished difference Result 826 states and 1220 transitions. [2022-11-03 02:23:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:23:58,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:23:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:58,296 INFO L225 Difference]: With dead ends: 826 [2022-11-03 02:23:58,296 INFO L226 Difference]: Without dead ends: 617 [2022-11-03 02:23:58,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:23:58,299 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2078 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:58,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1197 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-03 02:23:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 213. [2022-11-03 02:23:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4764150943396226) internal successors, (313), 212 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 02:23:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2022-11-03 02:23:58,326 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 109 [2022-11-03 02:23:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:58,328 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2022-11-03 02:23:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:23:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2022-11-03 02:23:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:23:58,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:58,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:58,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:23:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:23:58,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1167120569, now seen corresponding path program 1 times [2022-11-03 02:23:58,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:23:58,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185604527] [2022-11-03 02:23:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:58,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:23:58,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:23:58,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:23:58,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:23:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:59,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:23:59,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:59,604 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 02:23:59,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:23:59,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:23:59,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185604527] [2022-11-03 02:23:59,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185604527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:59,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:59,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:23:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562268183] [2022-11-03 02:23:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:59,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:23:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:23:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:23:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:23:59,609 INFO L87 Difference]: Start difference. First operand 213 states and 313 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:00,508 INFO L93 Difference]: Finished difference Result 841 states and 1238 transitions. [2022-11-03 02:24:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:24:00,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:00,512 INFO L225 Difference]: With dead ends: 841 [2022-11-03 02:24:00,512 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 02:24:00,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:24:00,515 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2388 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:00,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 1698 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:24:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 02:24:00,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 215. [2022-11-03 02:24:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.47196261682243) internal successors, (315), 214 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 02:24:00,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2022-11-03 02:24:00,529 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 315 transitions. Word has length 109 [2022-11-03 02:24:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:00,529 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 315 transitions. [2022-11-03 02:24:00,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:00,530 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 315 transitions. [2022-11-03 02:24:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:00,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:00,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:00,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:00,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:00,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2071115525, now seen corresponding path program 1 times [2022-11-03 02:24:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:00,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403083900] [2022-11-03 02:24:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:00,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:00,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:00,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:24:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:01,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:24:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:01,708 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 02:24:01,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:01,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:01,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403083900] [2022-11-03 02:24:01,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403083900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:01,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:01,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:24:01,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485337194] [2022-11-03 02:24:01,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:24:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:24:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:24:01,711 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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 02:24:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:03,347 INFO L93 Difference]: Finished difference Result 1083 states and 1580 transitions. [2022-11-03 02:24:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:24:03,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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) Word has length 109 [2022-11-03 02:24:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:03,352 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 02:24:03,352 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 02:24:03,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:24:03,354 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5593 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:03,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 2545 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:24:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 02:24:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 225. [2022-11-03 02:24:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4553571428571428) internal successors, (326), 224 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2022-11-03 02:24:03,372 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 109 [2022-11-03 02:24:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:03,372 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2022-11-03 02:24:03,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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 02:24:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2022-11-03 02:24:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:03,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:03,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:03,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:03,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2099615815, now seen corresponding path program 1 times [2022-11-03 02:24:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:03,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584134841] [2022-11-03 02:24:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:03,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:03,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:03,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:24:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:04,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:24:04,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:04,913 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 02:24:04,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:04,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584134841] [2022-11-03 02:24:04,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584134841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:04,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:04,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:04,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951463518] [2022-11-03 02:24:04,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:04,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:04,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:04,918 INFO L87 Difference]: Start difference. First operand 225 states and 326 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:05,563 INFO L93 Difference]: Finished difference Result 868 states and 1265 transitions. [2022-11-03 02:24:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:05,567 INFO L225 Difference]: With dead ends: 868 [2022-11-03 02:24:05,567 INFO L226 Difference]: Without dead ends: 645 [2022-11-03 02:24:05,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:05,569 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2062 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:05,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1155 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-03 02:24:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 231. [2022-11-03 02:24:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2022-11-03 02:24:05,581 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 109 [2022-11-03 02:24:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:05,582 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2022-11-03 02:24:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2022-11-03 02:24:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:05,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:05,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:05,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:05,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:05,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:05,796 INFO L85 PathProgramCache]: Analyzing trace with hash -318288251, now seen corresponding path program 1 times [2022-11-03 02:24:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:05,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463660762] [2022-11-03 02:24:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:05,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:05,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:05,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:05,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:24:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:06,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:06,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:06,721 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 02:24:06,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:06,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:06,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463660762] [2022-11-03 02:24:06,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463660762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:06,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:06,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:06,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445978876] [2022-11-03 02:24:06,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:06,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:06,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:06,725 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:07,024 INFO L93 Difference]: Finished difference Result 962 states and 1385 transitions. [2022-11-03 02:24:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:07,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:07,028 INFO L225 Difference]: With dead ends: 962 [2022-11-03 02:24:07,028 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 02:24:07,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:07,030 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 2047 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:07,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1301 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 02:24:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 233. [2022-11-03 02:24:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4482758620689655) internal successors, (336), 232 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2022-11-03 02:24:07,048 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 109 [2022-11-03 02:24:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:07,049 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2022-11-03 02:24:07,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2022-11-03 02:24:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:07,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:07,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:07,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:07,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:07,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2018104259, now seen corresponding path program 1 times [2022-11-03 02:24:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:07,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035703594] [2022-11-03 02:24:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:07,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:07,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:07,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:07,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:24:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:07,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:07,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:08,129 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 02:24:08,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:08,130 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:08,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035703594] [2022-11-03 02:24:08,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035703594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:08,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:08,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105824594] [2022-11-03 02:24:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:08,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:08,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:08,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:08,133 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:08,443 INFO L93 Difference]: Finished difference Result 968 states and 1391 transitions. [2022-11-03 02:24:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:08,447 INFO L225 Difference]: With dead ends: 968 [2022-11-03 02:24:08,447 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 02:24:08,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:08,449 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2039 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:08,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 1307 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 02:24:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 237. [2022-11-03 02:24:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.444915254237288) internal successors, (341), 236 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 02:24:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2022-11-03 02:24:08,462 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 109 [2022-11-03 02:24:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:08,462 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2022-11-03 02:24:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2022-11-03 02:24:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:08,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:08,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:08,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:08,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:08,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:08,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -710105087, now seen corresponding path program 1 times [2022-11-03 02:24:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585738467] [2022-11-03 02:24:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:08,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:08,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:08,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:08,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:24:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:09,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:09,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:09,540 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 02:24:09,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:09,540 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:09,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585738467] [2022-11-03 02:24:09,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585738467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:09,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:09,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004000664] [2022-11-03 02:24:09,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:09,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:09,544 INFO L87 Difference]: Start difference. First operand 237 states and 341 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:09,883 INFO L93 Difference]: Finished difference Result 974 states and 1397 transitions. [2022-11-03 02:24:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:09,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:09,887 INFO L225 Difference]: With dead ends: 974 [2022-11-03 02:24:09,887 INFO L226 Difference]: Without dead ends: 739 [2022-11-03 02:24:09,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:09,889 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2033 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:09,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1310 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-03 02:24:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 239. [2022-11-03 02:24:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4411764705882353) internal successors, (343), 238 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 02:24:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 343 transitions. [2022-11-03 02:24:09,910 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 343 transitions. Word has length 109 [2022-11-03 02:24:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:09,913 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 343 transitions. [2022-11-03 02:24:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 343 transitions. [2022-11-03 02:24:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:09,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:09,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:09,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:10,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:10,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1852607553, now seen corresponding path program 1 times [2022-11-03 02:24:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:10,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036438803] [2022-11-03 02:24:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:10,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:10,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:10,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:10,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:24:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:10,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:10,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:11,007 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 02:24:11,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:11,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:11,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036438803] [2022-11-03 02:24:11,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036438803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:11,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:11,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:11,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746702162] [2022-11-03 02:24:11,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:11,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:11,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:11,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:11,010 INFO L87 Difference]: Start difference. First operand 239 states and 343 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:11,295 INFO L93 Difference]: Finished difference Result 982 states and 1406 transitions. [2022-11-03 02:24:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:11,301 INFO L225 Difference]: With dead ends: 982 [2022-11-03 02:24:11,301 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 02:24:11,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:11,303 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2023 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:11,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1319 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:24:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 02:24:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 245. [2022-11-03 02:24:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4385245901639345) internal successors, (351), 244 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 02:24:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 351 transitions. [2022-11-03 02:24:11,320 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 351 transitions. Word has length 109 [2022-11-03 02:24:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:11,321 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 351 transitions. [2022-11-03 02:24:11,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 351 transitions. [2022-11-03 02:24:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:11,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:11,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:11,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:11,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:11,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -965384707, now seen corresponding path program 1 times [2022-11-03 02:24:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:11,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542675678] [2022-11-03 02:24:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:11,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:11,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:11,547 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:11,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:24:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:12,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:12,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:12,425 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 02:24:12,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:12,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:12,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542675678] [2022-11-03 02:24:12,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542675678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:12,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:12,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:12,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254927248] [2022-11-03 02:24:12,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:12,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:12,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:12,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:12,428 INFO L87 Difference]: Start difference. First operand 245 states and 351 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:12,804 INFO L93 Difference]: Finished difference Result 990 states and 1415 transitions. [2022-11-03 02:24:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:12,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:12,808 INFO L225 Difference]: With dead ends: 990 [2022-11-03 02:24:12,808 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 02:24:12,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:12,810 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2017 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:12,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:24:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 02:24:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 247. [2022-11-03 02:24:12,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.434959349593496) internal successors, (353), 246 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 02:24:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2022-11-03 02:24:12,826 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 109 [2022-11-03 02:24:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:12,827 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2022-11-03 02:24:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2022-11-03 02:24:12,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:12,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:12,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:12,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-03 02:24:13,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:13,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash -888483909, now seen corresponding path program 1 times [2022-11-03 02:24:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:13,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094228005] [2022-11-03 02:24:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:13,046 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:13,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:24:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:13,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:24:13,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:14,061 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 02:24:14,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:14,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:14,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094228005] [2022-11-03 02:24:14,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094228005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:14,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:14,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370687358] [2022-11-03 02:24:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:14,065 INFO L87 Difference]: Start difference. First operand 247 states and 353 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:14,692 INFO L93 Difference]: Finished difference Result 994 states and 1418 transitions. [2022-11-03 02:24:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:14,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:14,696 INFO L225 Difference]: With dead ends: 994 [2022-11-03 02:24:14,696 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 02:24:14,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:14,697 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2011 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:14,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1249 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 02:24:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 249. [2022-11-03 02:24:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4314516129032258) internal successors, (355), 248 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 02:24:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 355 transitions. [2022-11-03 02:24:14,712 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 355 transitions. Word has length 109 [2022-11-03 02:24:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:14,712 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 355 transitions. [2022-11-03 02:24:14,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 355 transitions. [2022-11-03 02:24:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:14,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:14,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:14,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:14,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1019973881, now seen corresponding path program 1 times [2022-11-03 02:24:14,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:14,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406327956] [2022-11-03 02:24:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:14,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:14,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:14,935 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:14,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:24:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:15,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:15,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:15,797 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 02:24:15,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:15,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:15,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406327956] [2022-11-03 02:24:15,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406327956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:15,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:15,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109505447] [2022-11-03 02:24:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:15,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:15,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:15,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:15,801 INFO L87 Difference]: Start difference. First operand 249 states and 355 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:16,181 INFO L93 Difference]: Finished difference Result 998 states and 1421 transitions. [2022-11-03 02:24:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:16,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:16,185 INFO L225 Difference]: With dead ends: 998 [2022-11-03 02:24:16,185 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 02:24:16,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:16,186 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2005 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:16,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1324 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:24:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 02:24:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 251. [2022-11-03 02:24:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.428) internal successors, (357), 250 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2022-11-03 02:24:16,201 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 109 [2022-11-03 02:24:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:16,202 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2022-11-03 02:24:16,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2022-11-03 02:24:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:16,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:16,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:16,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:16,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:16,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1973914039, now seen corresponding path program 1 times [2022-11-03 02:24:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:16,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404689868] [2022-11-03 02:24:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:16,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:16,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:16,422 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:16,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:24:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:16,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:16,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:17,208 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 02:24:17,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:17,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:17,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404689868] [2022-11-03 02:24:17,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404689868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:17,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:17,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381232348] [2022-11-03 02:24:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:17,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:17,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:17,211 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:17,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:17,594 INFO L93 Difference]: Finished difference Result 1002 states and 1424 transitions. [2022-11-03 02:24:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:17,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:17,600 INFO L225 Difference]: With dead ends: 1002 [2022-11-03 02:24:17,600 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 02:24:17,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:17,602 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1999 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:17,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 1327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:24:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 02:24:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 253. [2022-11-03 02:24:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4246031746031746) internal successors, (359), 252 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 02:24:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 359 transitions. [2022-11-03 02:24:17,628 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 359 transitions. Word has length 109 [2022-11-03 02:24:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:17,628 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 359 transitions. [2022-11-03 02:24:17,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:17,629 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 359 transitions. [2022-11-03 02:24:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:17,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:17,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:17,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-03 02:24:17,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:17,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:17,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:17,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1241946613, now seen corresponding path program 1 times [2022-11-03 02:24:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:17,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145138328] [2022-11-03 02:24:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:17,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:17,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:17,836 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:17,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:24:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:18,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:24:18,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:18,821 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 02:24:18,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:18,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:18,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145138328] [2022-11-03 02:24:18,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145138328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:18,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:18,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101358112] [2022-11-03 02:24:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:18,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:18,824 INFO L87 Difference]: Start difference. First operand 253 states and 359 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:19,409 INFO L93 Difference]: Finished difference Result 1006 states and 1427 transitions. [2022-11-03 02:24:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:19,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:19,412 INFO L225 Difference]: With dead ends: 1006 [2022-11-03 02:24:19,412 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 02:24:19,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:19,414 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1993 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:19,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1258 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:19,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 02:24:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 255. [2022-11-03 02:24:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.421259842519685) internal successors, (361), 254 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 02:24:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 361 transitions. [2022-11-03 02:24:19,440 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 361 transitions. Word has length 109 [2022-11-03 02:24:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:19,441 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 361 transitions. [2022-11-03 02:24:19,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 361 transitions. [2022-11-03 02:24:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:19,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:19,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:19,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:19,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:19,643 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1187553715, now seen corresponding path program 1 times [2022-11-03 02:24:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822833976] [2022-11-03 02:24:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:19,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:19,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:19,645 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:19,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:24:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:20,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:24:20,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:21,073 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 02:24:21,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:21,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:21,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822833976] [2022-11-03 02:24:21,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822833976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:21,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:21,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084833793] [2022-11-03 02:24:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:21,077 INFO L87 Difference]: Start difference. First operand 255 states and 361 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:21,660 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2022-11-03 02:24:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:21,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:21,664 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 02:24:21,664 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 02:24:21,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:21,666 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1987 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:21,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1281 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 02:24:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 257. [2022-11-03 02:24:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 02:24:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-11-03 02:24:21,681 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 109 [2022-11-03 02:24:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:21,682 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-11-03 02:24:21,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-11-03 02:24:21,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:21,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:21,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:21,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:21,905 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1866825969, now seen corresponding path program 1 times [2022-11-03 02:24:21,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:21,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837636918] [2022-11-03 02:24:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:21,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:21,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:21,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:21,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:24:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:22,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:24:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:22,932 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 02:24:22,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:22,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837636918] [2022-11-03 02:24:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837636918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:22,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:22,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143306949] [2022-11-03 02:24:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:22,934 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:23,342 INFO L93 Difference]: Finished difference Result 840 states and 1175 transitions. [2022-11-03 02:24:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:23,345 INFO L225 Difference]: With dead ends: 840 [2022-11-03 02:24:23,345 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 02:24:23,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:23,347 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 572 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1683 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 02:24:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 02:24:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 331. [2022-11-03 02:24:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.3757575757575757) internal successors, (454), 330 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 02:24:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 454 transitions. [2022-11-03 02:24:23,371 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 454 transitions. Word has length 109 [2022-11-03 02:24:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:23,372 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 454 transitions. [2022-11-03 02:24:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 454 transitions. [2022-11-03 02:24:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:23,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:23,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:23,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:23,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:23,594 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1665002035, now seen corresponding path program 1 times [2022-11-03 02:24:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:23,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103503521] [2022-11-03 02:24:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:23,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:23,598 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:23,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:24:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:24,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:24,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:24,481 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 02:24:24,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:24,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:24,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103503521] [2022-11-03 02:24:24,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103503521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:24,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:24,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609231731] [2022-11-03 02:24:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:24,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:24,485 INFO L87 Difference]: Start difference. First operand 331 states and 454 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:24,983 INFO L93 Difference]: Finished difference Result 1001 states and 1412 transitions. [2022-11-03 02:24:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:24:24,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:24,987 INFO L225 Difference]: With dead ends: 1001 [2022-11-03 02:24:24,987 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 02:24:24,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:24,989 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1872 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:24,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1298 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:24:24,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 02:24:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 335. [2022-11-03 02:24:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.374251497005988) internal successors, (459), 334 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 02:24:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 459 transitions. [2022-11-03 02:24:25,010 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 459 transitions. Word has length 109 [2022-11-03 02:24:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:25,011 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 459 transitions. [2022-11-03 02:24:25,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 459 transitions. [2022-11-03 02:24:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:25,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:25,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:25,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:25,222 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2098731121, now seen corresponding path program 1 times [2022-11-03 02:24:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:25,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229250161] [2022-11-03 02:24:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:25,225 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:25,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:24:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:25,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:25,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:24:26,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:26,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229250161] [2022-11-03 02:24:26,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229250161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:26,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:26,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:26,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656367332] [2022-11-03 02:24:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:26,050 INFO L87 Difference]: Start difference. First operand 335 states and 459 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:26,692 INFO L93 Difference]: Finished difference Result 1110 states and 1553 transitions. [2022-11-03 02:24:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:26,695 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 02:24:26,696 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 02:24:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:26,697 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2301 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:26,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1885 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 02:24:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 337. [2022-11-03 02:24:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3720238095238095) internal successors, (461), 336 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 02:24:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2022-11-03 02:24:26,720 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 109 [2022-11-03 02:24:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:26,721 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2022-11-03 02:24:26,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2022-11-03 02:24:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:26,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:26,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:26,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:26,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:26,936 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2139405871, now seen corresponding path program 1 times [2022-11-03 02:24:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:26,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089266971] [2022-11-03 02:24:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:26,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:26,938 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:26,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:24:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:27,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:24:27,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:28,137 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 02:24:28,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:28,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:28,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089266971] [2022-11-03 02:24:28,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089266971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:28,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:28,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:28,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553917403] [2022-11-03 02:24:28,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:28,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:28,147 INFO L87 Difference]: Start difference. First operand 337 states and 461 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:28,978 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2022-11-03 02:24:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:28,982 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 02:24:28,982 INFO L226 Difference]: Without dead ends: 853 [2022-11-03 02:24:28,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:28,984 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2291 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:28,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1809 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:24:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-03 02:24:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 339. [2022-11-03 02:24:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3698224852071006) internal successors, (463), 338 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 02:24:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 463 transitions. [2022-11-03 02:24:29,005 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 463 transitions. Word has length 109 [2022-11-03 02:24:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:29,005 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 463 transitions. [2022-11-03 02:24:29,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 463 transitions. [2022-11-03 02:24:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:29,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:29,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:29,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:29,226 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:29,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1279542419, now seen corresponding path program 1 times [2022-11-03 02:24:29,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:29,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969779520] [2022-11-03 02:24:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:29,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:29,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:29,229 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:29,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:24:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:29,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:29,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:30,062 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 02:24:30,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:30,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:30,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969779520] [2022-11-03 02:24:30,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969779520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:30,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:30,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:30,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656137740] [2022-11-03 02:24:30,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:30,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:30,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:30,065 INFO L87 Difference]: Start difference. First operand 339 states and 463 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:30,707 INFO L93 Difference]: Finished difference Result 1118 states and 1559 transitions. [2022-11-03 02:24:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:30,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:30,712 INFO L225 Difference]: With dead ends: 1118 [2022-11-03 02:24:30,712 INFO L226 Difference]: Without dead ends: 855 [2022-11-03 02:24:30,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:30,715 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2287 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:30,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 1891 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-03 02:24:30,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 341. [2022-11-03 02:24:30,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 340 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 02:24:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 465 transitions. [2022-11-03 02:24:30,740 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 465 transitions. Word has length 109 [2022-11-03 02:24:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:30,741 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 465 transitions. [2022-11-03 02:24:30,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 465 transitions. [2022-11-03 02:24:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:30,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:30,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:30,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:30,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:30,963 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:30,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash 258797611, now seen corresponding path program 1 times [2022-11-03 02:24:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:30,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64780366] [2022-11-03 02:24:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:30,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:30,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:30,965 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:24:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:31,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:31,805 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 02:24:31,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:31,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:31,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64780366] [2022-11-03 02:24:31,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64780366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:31,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:31,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348010535] [2022-11-03 02:24:31,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:31,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:31,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:31,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:31,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:31,808 INFO L87 Difference]: Start difference. First operand 341 states and 465 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:32,419 INFO L93 Difference]: Finished difference Result 1122 states and 1562 transitions. [2022-11-03 02:24:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:32,427 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 02:24:32,427 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 02:24:32,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:32,429 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2280 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:32,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1894 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:24:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 02:24:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 343. [2022-11-03 02:24:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3654970760233918) internal successors, (467), 342 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 02:24:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2022-11-03 02:24:32,452 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 109 [2022-11-03 02:24:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:32,452 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2022-11-03 02:24:32,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2022-11-03 02:24:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:32,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:32,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:32,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:32,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:32,670 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash -222282647, now seen corresponding path program 1 times [2022-11-03 02:24:32,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:32,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99882993] [2022-11-03 02:24:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:32,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:32,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:32,674 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:32,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:24:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:33,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:24:33,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:33,875 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 02:24:33,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:33,876 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99882993] [2022-11-03 02:24:33,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99882993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:33,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:33,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237514228] [2022-11-03 02:24:33,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:33,879 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:34,703 INFO L93 Difference]: Finished difference Result 1126 states and 1565 transitions. [2022-11-03 02:24:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:34,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:34,705 INFO L225 Difference]: With dead ends: 1126 [2022-11-03 02:24:34,705 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 02:24:34,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:34,707 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 2270 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:34,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:24:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 02:24:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 345. [2022-11-03 02:24:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3633720930232558) internal successors, (469), 344 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 02:24:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2022-11-03 02:24:34,730 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 109 [2022-11-03 02:24:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:34,730 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2022-11-03 02:24:34,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2022-11-03 02:24:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:34,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:34,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:34,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:34,953 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:34,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879399, now seen corresponding path program 1 times [2022-11-03 02:24:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:34,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736494119] [2022-11-03 02:24:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:34,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:34,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:34,957 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:34,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:24:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:35,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:35,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:35,834 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 02:24:35,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:35,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:35,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736494119] [2022-11-03 02:24:35,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736494119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:35,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:35,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:35,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729001541] [2022-11-03 02:24:35,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:35,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:35,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:35,837 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:36,235 INFO L93 Difference]: Finished difference Result 1029 states and 1436 transitions. [2022-11-03 02:24:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:24:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:36,239 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 02:24:36,239 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 02:24:36,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:36,241 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1834 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:36,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1318 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:24:36,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 02:24:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 349. [2022-11-03 02:24:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3620689655172413) internal successors, (474), 348 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 02:24:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 474 transitions. [2022-11-03 02:24:36,262 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 474 transitions. Word has length 109 [2022-11-03 02:24:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:36,262 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 474 transitions. [2022-11-03 02:24:36,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 474 transitions. [2022-11-03 02:24:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:36,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:36,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:36,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:36,479 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash -332508443, now seen corresponding path program 1 times [2022-11-03 02:24:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638053115] [2022-11-03 02:24:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:36,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:36,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:36,482 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:36,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:24:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:36,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:37,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:37,337 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 02:24:37,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:37,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638053115] [2022-11-03 02:24:37,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638053115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:37,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:37,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45184702] [2022-11-03 02:24:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:37,340 INFO L87 Difference]: Start difference. First operand 349 states and 474 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:37,924 INFO L93 Difference]: Finished difference Result 1166 states and 1613 transitions. [2022-11-03 02:24:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:37,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:37,927 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 02:24:37,927 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 02:24:37,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:37,930 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2314 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:37,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1905 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:24:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 02:24:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 02:24:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.36) internal successors, (476), 350 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 02:24:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 476 transitions. [2022-11-03 02:24:37,960 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 476 transitions. Word has length 109 [2022-11-03 02:24:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:37,960 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 476 transitions. [2022-11-03 02:24:37,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 476 transitions. [2022-11-03 02:24:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:37,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:37,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:37,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:38,181 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash -84361949, now seen corresponding path program 1 times [2022-11-03 02:24:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:38,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946806334] [2022-11-03 02:24:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:38,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:38,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:38,185 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:38,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:24:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:38,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:24:38,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:39,479 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 02:24:39,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:39,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:39,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946806334] [2022-11-03 02:24:39,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946806334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:39,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:39,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401307980] [2022-11-03 02:24:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:39,482 INFO L87 Difference]: Start difference. First operand 351 states and 476 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:40,329 INFO L93 Difference]: Finished difference Result 1170 states and 1616 transitions. [2022-11-03 02:24:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:40,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:40,335 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 02:24:40,335 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 02:24:40,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:40,336 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 2304 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:40,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1829 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:24:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 02:24:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 02:24:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3579545454545454) internal successors, (478), 352 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 02:24:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 478 transitions. [2022-11-03 02:24:40,357 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 478 transitions. Word has length 109 [2022-11-03 02:24:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:40,358 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 478 transitions. [2022-11-03 02:24:40,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 478 transitions. [2022-11-03 02:24:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:40,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:40,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:40,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:40,575 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1456169247, now seen corresponding path program 1 times [2022-11-03 02:24:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:40,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94217328] [2022-11-03 02:24:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:40,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:40,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:40,578 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:40,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:24:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:41,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:41,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:41,458 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 02:24:41,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:41,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:41,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94217328] [2022-11-03 02:24:41,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94217328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:41,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:41,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401394542] [2022-11-03 02:24:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:41,461 INFO L87 Difference]: Start difference. First operand 353 states and 478 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:41,846 INFO L93 Difference]: Finished difference Result 1043 states and 1448 transitions. [2022-11-03 02:24:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:24:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:41,851 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 02:24:41,851 INFO L226 Difference]: Without dead ends: 766 [2022-11-03 02:24:41,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:41,852 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1816 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:41,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1326 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:24:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-03 02:24:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-03 02:24:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3559322033898304) internal successors, (480), 354 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 02:24:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2022-11-03 02:24:41,872 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 109 [2022-11-03 02:24:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:41,873 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2022-11-03 02:24:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2022-11-03 02:24:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:41,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:41,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:41,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:42,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:42,093 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:42,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1809438751, now seen corresponding path program 1 times [2022-11-03 02:24:42,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:42,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662655140] [2022-11-03 02:24:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:42,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:42,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:42,095 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:42,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:24:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:42,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:24:42,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:42,978 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 02:24:42,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:42,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:42,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662655140] [2022-11-03 02:24:42,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662655140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:42,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:42,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:42,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762868129] [2022-11-03 02:24:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:42,981 INFO L87 Difference]: Start difference. First operand 355 states and 480 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:43,411 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2022-11-03 02:24:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:24:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:43,415 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 02:24:43,415 INFO L226 Difference]: Without dead ends: 768 [2022-11-03 02:24:43,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:43,416 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1810 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:43,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1328 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:24:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-03 02:24:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 357. [2022-11-03 02:24:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.353932584269663) internal successors, (482), 356 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 02:24:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2022-11-03 02:24:43,431 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 109 [2022-11-03 02:24:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:43,432 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2022-11-03 02:24:43,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2022-11-03 02:24:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:43,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:43,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:43,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:43,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:43,647 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:43,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1415071965, now seen corresponding path program 1 times [2022-11-03 02:24:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410035178] [2022-11-03 02:24:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:43,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:43,649 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:43,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:24:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:44,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:24:44,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:44,888 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 02:24:44,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:44,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:44,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410035178] [2022-11-03 02:24:44,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410035178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:44,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:44,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128888066] [2022-11-03 02:24:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:44,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:44,891 INFO L87 Difference]: Start difference. First operand 357 states and 482 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:45,669 INFO L93 Difference]: Finished difference Result 1194 states and 1640 transitions. [2022-11-03 02:24:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:45,672 INFO L225 Difference]: With dead ends: 1194 [2022-11-03 02:24:45,672 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 02:24:45,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:45,673 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 2307 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:45,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 1836 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:24:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 02:24:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 359. [2022-11-03 02:24:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 02:24:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2022-11-03 02:24:45,694 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 109 [2022-11-03 02:24:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:45,694 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2022-11-03 02:24:45,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2022-11-03 02:24:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:45,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:45,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:45,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 02:24:45,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:45,914 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash -828911333, now seen corresponding path program 1 times [2022-11-03 02:24:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:45,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800889266] [2022-11-03 02:24:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:45,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:45,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:45,917 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:45,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:24:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:46,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:24:46,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:47,843 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 02:24:47,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:47,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:47,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800889266] [2022-11-03 02:24:47,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800889266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:47,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:47,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:47,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569320116] [2022-11-03 02:24:47,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:47,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:47,845 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:48,700 INFO L93 Difference]: Finished difference Result 1186 states and 1628 transitions. [2022-11-03 02:24:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:48,704 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:24:48,704 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 02:24:48,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:48,706 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2276 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:48,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 1860 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 02:24:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 361. [2022-11-03 02:24:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.35) internal successors, (486), 360 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2022-11-03 02:24:48,727 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 109 [2022-11-03 02:24:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:48,727 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2022-11-03 02:24:48,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2022-11-03 02:24:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:48,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:48,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:48,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:48,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:48,939 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash -554151719, now seen corresponding path program 1 times [2022-11-03 02:24:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:48,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008379166] [2022-11-03 02:24:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:48,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:48,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:48,942 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:48,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:24:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:49,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:24:49,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:52,051 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 02:24:52,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:52,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:52,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008379166] [2022-11-03 02:24:52,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008379166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:52,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:52,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:24:52,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068030519] [2022-11-03 02:24:52,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:52,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:52,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:52,054 INFO L87 Difference]: Start difference. First operand 361 states and 486 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:53,115 INFO L93 Difference]: Finished difference Result 1162 states and 1595 transitions. [2022-11-03 02:24:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:24:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:24:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:53,117 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 02:24:53,117 INFO L226 Difference]: Without dead ends: 877 [2022-11-03 02:24:53,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:24:53,119 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2212 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:53,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1863 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:24:53,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-03 02:24:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 363. [2022-11-03 02:24:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3480662983425415) internal successors, (488), 362 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 488 transitions. [2022-11-03 02:24:53,140 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 488 transitions. Word has length 109 [2022-11-03 02:24:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:53,140 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 488 transitions. [2022-11-03 02:24:53,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:24:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 488 transitions. [2022-11-03 02:24:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:53,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:53,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:53,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 02:24:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:53,355 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash -531519465, now seen corresponding path program 1 times [2022-11-03 02:24:53,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:53,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99240700] [2022-11-03 02:24:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:53,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:53,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:53,358 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:53,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:24:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:53,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:24:53,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:54,419 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 02:24:54,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:54,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99240700] [2022-11-03 02:24:54,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99240700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:54,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:54,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856014290] [2022-11-03 02:24:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:54,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:54,422 INFO L87 Difference]: Start difference. First operand 363 states and 488 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:54,797 INFO L93 Difference]: Finished difference Result 968 states and 1310 transitions. [2022-11-03 02:24:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:54,802 INFO L225 Difference]: With dead ends: 968 [2022-11-03 02:24:54,802 INFO L226 Difference]: Without dead ends: 681 [2022-11-03 02:24:54,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:24:54,804 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 525 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:54,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1872 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 16 Unchecked, 0.3s Time] [2022-11-03 02:24:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-03 02:24:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 395. [2022-11-03 02:24:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3223350253807107) internal successors, (521), 394 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 02:24:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2022-11-03 02:24:54,828 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 109 [2022-11-03 02:24:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:54,828 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2022-11-03 02:24:54,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2022-11-03 02:24:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:54,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:54,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:54,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:55,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:55,046 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:55,046 INFO L85 PathProgramCache]: Analyzing trace with hash -22046375, now seen corresponding path program 1 times [2022-11-03 02:24:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:55,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795019880] [2022-11-03 02:24:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:55,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:55,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:55,048 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:55,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:24:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:55,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:24:55,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:56,033 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 02:24:56,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:56,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:56,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795019880] [2022-11-03 02:24:56,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795019880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:56,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:56,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:56,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945568122] [2022-11-03 02:24:56,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:56,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:56,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:56,035 INFO L87 Difference]: Start difference. First operand 395 states and 521 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:56,568 INFO L93 Difference]: Finished difference Result 1316 states and 1794 transitions. [2022-11-03 02:24:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:56,571 INFO L225 Difference]: With dead ends: 1316 [2022-11-03 02:24:56,571 INFO L226 Difference]: Without dead ends: 1029 [2022-11-03 02:24:56,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:56,573 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1892 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:56,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1605 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-03 02:24:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 397. [2022-11-03 02:24:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3207070707070707) internal successors, (523), 396 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 02:24:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 523 transitions. [2022-11-03 02:24:56,601 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 523 transitions. Word has length 109 [2022-11-03 02:24:56,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:56,601 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 523 transitions. [2022-11-03 02:24:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 523 transitions. [2022-11-03 02:24:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:56,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:56,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:56,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 02:24:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:56,820 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash -156059881, now seen corresponding path program 1 times [2022-11-03 02:24:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:56,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36019367] [2022-11-03 02:24:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:56,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:56,823 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:56,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:24:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:57,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 02:24:57,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:58,503 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 02:24:58,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:58,504 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:24:58,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36019367] [2022-11-03 02:24:58,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36019367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:58,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:58,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342906826] [2022-11-03 02:24:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:58,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:58,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:24:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:58,507 INFO L87 Difference]: Start difference. First operand 397 states and 523 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:59,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:59,056 INFO L93 Difference]: Finished difference Result 1320 states and 1797 transitions. [2022-11-03 02:24:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:24:59,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) Word has length 109 [2022-11-03 02:24:59,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:59,060 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 02:24:59,060 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 02:24:59,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:59,061 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1886 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:59,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1572 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:24:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 02:24:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 399. [2022-11-03 02:24:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3190954773869348) internal successors, (525), 398 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 02:24:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 525 transitions. [2022-11-03 02:24:59,083 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 525 transitions. Word has length 109 [2022-11-03 02:24:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:59,083 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 525 transitions. [2022-11-03 02:24:59,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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 02:24:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 525 transitions. [2022-11-03 02:24:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:24:59,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:59,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:59,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:59,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:24:59,305 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 62794837, now seen corresponding path program 1 times [2022-11-03 02:24:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:24:59,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253020121] [2022-11-03 02:24:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:24:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:24:59,307 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:24:59,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:24:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:59,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:24:59,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:00,022 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 02:25:00,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:00,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253020121] [2022-11-03 02:25:00,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253020121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:00,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:00,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:00,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897191382] [2022-11-03 02:25:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:00,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:00,025 INFO L87 Difference]: Start difference. First operand 399 states and 525 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 02:25:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:00,145 INFO L93 Difference]: Finished difference Result 1167 states and 1597 transitions. [2022-11-03 02:25:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) Word has length 109 [2022-11-03 02:25:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:00,148 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:25:00,148 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:25:00,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 02:25:00,149 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 684 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:00,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:25:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 471. [2022-11-03 02:25:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3404255319148937) internal successors, (630), 470 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 02:25:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-03 02:25:00,172 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 109 [2022-11-03 02:25:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:00,173 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-03 02:25:00,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 02:25:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-03 02:25:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:25:00,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:00,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:00,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:00,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:00,395 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -754853613, now seen corresponding path program 1 times [2022-11-03 02:25:00,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:00,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117037973] [2022-11-03 02:25:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:00,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:00,397 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:00,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:25:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:00,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:00,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:01,040 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 02:25:01,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:01,041 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:01,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117037973] [2022-11-03 02:25:01,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117037973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:01,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:01,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837597018] [2022-11-03 02:25:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:01,043 INFO L87 Difference]: Start difference. First operand 471 states and 630 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 02:25:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:01,143 INFO L93 Difference]: Finished difference Result 1167 states and 1596 transitions. [2022-11-03 02:25:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) Word has length 109 [2022-11-03 02:25:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:01,146 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:25:01,146 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:25:01,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 02:25:01,147 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 678 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:01,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1189 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:25:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 473. [2022-11-03 02:25:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 472 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 02:25:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-03 02:25:01,167 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 109 [2022-11-03 02:25:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:01,167 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-03 02:25:01,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 02:25:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-03 02:25:01,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:25:01,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:01,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:01,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:01,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:01,369 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1545968977, now seen corresponding path program 1 times [2022-11-03 02:25:01,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394594138] [2022-11-03 02:25:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:01,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:01,372 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:01,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:25:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:01,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:01,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:02,075 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 02:25:02,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:02,075 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:02,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394594138] [2022-11-03 02:25:02,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394594138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:02,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:02,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:02,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478060122] [2022-11-03 02:25:02,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:02,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:02,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:02,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:02,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:02,078 INFO L87 Difference]: Start difference. First operand 473 states and 632 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 02:25:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:02,180 INFO L93 Difference]: Finished difference Result 1167 states and 1595 transitions. [2022-11-03 02:25:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) Word has length 109 [2022-11-03 02:25:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:02,183 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:25:02,183 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:25:02,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 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 02:25:02,184 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 657 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:02,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1188 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:25:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 481. [2022-11-03 02:25:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 480 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 02:25:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 643 transitions. [2022-11-03 02:25:02,207 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 643 transitions. Word has length 109 [2022-11-03 02:25:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:02,212 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 643 transitions. [2022-11-03 02:25:02,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 02:25:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 643 transitions. [2022-11-03 02:25:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:25:02,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:02,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:02,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-03 02:25:02,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:02,419 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1152941967, now seen corresponding path program 1 times [2022-11-03 02:25:02,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:02,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242789489] [2022-11-03 02:25:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:02,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:02,423 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:02,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:25:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:02,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:02,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:03,201 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 02:25:03,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:03,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:03,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242789489] [2022-11-03 02:25:03,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242789489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:03,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:03,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:25:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052480937] [2022-11-03 02:25:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:03,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:25:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:03,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:25:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:25:03,204 INFO L87 Difference]: Start difference. First operand 481 states and 643 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:25:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:03,589 INFO L93 Difference]: Finished difference Result 1348 states and 1829 transitions. [2022-11-03 02:25:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:25:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) Word has length 109 [2022-11-03 02:25:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:03,592 INFO L225 Difference]: With dead ends: 1348 [2022-11-03 02:25:03,592 INFO L226 Difference]: Without dead ends: 1057 [2022-11-03 02:25:03,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:03,593 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 922 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:03,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2604 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 02:25:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-03 02:25:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 489. [2022-11-03 02:25:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.3381147540983607) internal successors, (653), 488 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 02:25:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-03 02:25:03,609 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 109 [2022-11-03 02:25:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:03,609 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-03 02:25:03,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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 02:25:03,609 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-03 02:25:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:25:03,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:03,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:03,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:03,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:03,811 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1210200269, now seen corresponding path program 1 times [2022-11-03 02:25:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:03,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112171586] [2022-11-03 02:25:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:03,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:03,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:03,813 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:03,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:25:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:04,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:25:04,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:04,816 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 02:25:04,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:04,816 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:04,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112171586] [2022-11-03 02:25:04,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112171586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:04,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:04,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:25:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543078241] [2022-11-03 02:25:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:04,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:25:04,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:25:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:25:04,818 INFO L87 Difference]: Start difference. First operand 489 states and 653 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 02:25:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:05,218 INFO L93 Difference]: Finished difference Result 787 states and 1062 transitions. [2022-11-03 02:25:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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) Word has length 109 [2022-11-03 02:25:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:05,220 INFO L225 Difference]: With dead ends: 787 [2022-11-03 02:25:05,220 INFO L226 Difference]: Without dead ends: 785 [2022-11-03 02:25:05,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 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 02:25:05,221 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 787 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:05,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1301 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-03 02:25:05,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 497. [2022-11-03 02:25:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3387096774193548) internal successors, (664), 496 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 02:25:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2022-11-03 02:25:05,242 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 109 [2022-11-03 02:25:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:05,243 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2022-11-03 02:25:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 02:25:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2022-11-03 02:25:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:05,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:05,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:05,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:05,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:05,465 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash -303024265, now seen corresponding path program 1 times [2022-11-03 02:25:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:05,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543480012] [2022-11-03 02:25:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:05,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:05,468 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:05,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:25:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:06,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:06,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:06,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:06,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543480012] [2022-11-03 02:25:06,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543480012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:06,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:06,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:06,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352408448] [2022-11-03 02:25:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:06,502 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:06,607 INFO L93 Difference]: Finished difference Result 1173 states and 1602 transitions. [2022-11-03 02:25:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:06,610 INFO L225 Difference]: With dead ends: 1173 [2022-11-03 02:25:06,610 INFO L226 Difference]: Without dead ends: 882 [2022-11-03 02:25:06,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:25:06,611 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 628 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:06,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1185 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-03 02:25:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 499. [2022-11-03 02:25:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3373493975903614) internal successors, (666), 498 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 02:25:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 666 transitions. [2022-11-03 02:25:06,624 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 666 transitions. Word has length 310 [2022-11-03 02:25:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:06,625 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 666 transitions. [2022-11-03 02:25:06,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 666 transitions. [2022-11-03 02:25:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:06,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:06,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:06,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 02:25:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:06,832 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2024138105, now seen corresponding path program 1 times [2022-11-03 02:25:06,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:06,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529661032] [2022-11-03 02:25:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:06,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:06,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:06,836 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:06,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:25:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:07,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:07,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:07,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:07,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:07,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529661032] [2022-11-03 02:25:07,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529661032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:07,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:07,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:25:07,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144463927] [2022-11-03 02:25:07,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:25:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:07,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:25:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:25:07,950 INFO L87 Difference]: Start difference. First operand 499 states and 666 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:08,315 INFO L93 Difference]: Finished difference Result 1356 states and 1838 transitions. [2022-11-03 02:25:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:25:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:08,317 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 02:25:08,317 INFO L226 Difference]: Without dead ends: 1065 [2022-11-03 02:25:08,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:08,318 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1173 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:08,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1906 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 02:25:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-03 02:25:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 509. [2022-11-03 02:25:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3346456692913387) internal successors, (678), 508 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 02:25:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 678 transitions. [2022-11-03 02:25:08,342 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 678 transitions. Word has length 310 [2022-11-03 02:25:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:08,342 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 678 transitions. [2022-11-03 02:25:08,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 678 transitions. [2022-11-03 02:25:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:08,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:08,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:08,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:08,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:08,572 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:08,572 INFO L85 PathProgramCache]: Analyzing trace with hash 299295867, now seen corresponding path program 1 times [2022-11-03 02:25:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:08,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643075379] [2022-11-03 02:25:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:08,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:08,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:08,575 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:08,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:25:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:09,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:25:09,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:09,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:09,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:09,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643075379] [2022-11-03 02:25:09,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643075379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:09,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:09,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:25:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383319681] [2022-11-03 02:25:09,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:09,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:25:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:09,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:25:09,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:25:09,631 INFO L87 Difference]: Start difference. First operand 509 states and 678 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:09,734 INFO L93 Difference]: Finished difference Result 1183 states and 1613 transitions. [2022-11-03 02:25:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:25:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:09,736 INFO L225 Difference]: With dead ends: 1183 [2022-11-03 02:25:09,736 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 02:25:09,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:25:09,737 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 612 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:09,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1184 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 02:25:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 515. [2022-11-03 02:25:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3346303501945525) internal successors, (686), 514 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 02:25:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 686 transitions. [2022-11-03 02:25:09,752 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 686 transitions. Word has length 310 [2022-11-03 02:25:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:09,752 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 686 transitions. [2022-11-03 02:25:09,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 686 transitions. [2022-11-03 02:25:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:09,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:09,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:09,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:09,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:09,979 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:09,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:09,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1981826051, now seen corresponding path program 1 times [2022-11-03 02:25:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:09,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129007178] [2022-11-03 02:25:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:09,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:09,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:09,982 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:09,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:25:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:10,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:10,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:11,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:11,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:11,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129007178] [2022-11-03 02:25:11,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129007178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:11,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:11,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:25:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080538337] [2022-11-03 02:25:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:11,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:25:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:25:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:25:11,166 INFO L87 Difference]: Start difference. First operand 515 states and 686 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:11,479 INFO L93 Difference]: Finished difference Result 848 states and 1139 transitions. [2022-11-03 02:25:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:25:11,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:11,480 INFO L225 Difference]: With dead ends: 848 [2022-11-03 02:25:11,480 INFO L226 Difference]: Without dead ends: 557 [2022-11-03 02:25:11,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:11,481 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:11,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1426 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2022-11-03 02:25:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-03 02:25:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-03 02:25:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.329136690647482) internal successors, (739), 556 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 02:25:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 739 transitions. [2022-11-03 02:25:11,505 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 739 transitions. Word has length 310 [2022-11-03 02:25:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:11,505 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 739 transitions. [2022-11-03 02:25:11,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 739 transitions. [2022-11-03 02:25:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:11,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:11,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:11,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:11,737 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 98757627, now seen corresponding path program 1 times [2022-11-03 02:25:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:11,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758245819] [2022-11-03 02:25:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:11,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:11,740 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:11,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:25:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:12,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:12,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:12,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:12,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758245819] [2022-11-03 02:25:12,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758245819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:12,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:12,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:25:12,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237353884] [2022-11-03 02:25:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:12,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:25:12,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:25:12,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:25:12,836 INFO L87 Difference]: Start difference. First operand 557 states and 739 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:13,382 INFO L93 Difference]: Finished difference Result 1408 states and 1901 transitions. [2022-11-03 02:25:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:25:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:13,385 INFO L225 Difference]: With dead ends: 1408 [2022-11-03 02:25:13,385 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 02:25:13,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:13,387 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 889 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:13,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2654 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 30 Unchecked, 0.5s Time] [2022-11-03 02:25:13,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 02:25:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 567. [2022-11-03 02:25:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.325088339222615) internal successors, (750), 566 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 02:25:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2022-11-03 02:25:13,411 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 310 [2022-11-03 02:25:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:13,412 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2022-11-03 02:25:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2022-11-03 02:25:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:13,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:13,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:13,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:13,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:13,631 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1686645635, now seen corresponding path program 1 times [2022-11-03 02:25:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153115971] [2022-11-03 02:25:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:13,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:13,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:13,637 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:13,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:25:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:14,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 02:25:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:16,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:16,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153115971] [2022-11-03 02:25:16,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153115971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:16,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:16,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:25:16,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770186638] [2022-11-03 02:25:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:25:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:25:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:25:16,885 INFO L87 Difference]: Start difference. First operand 567 states and 750 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:17,859 INFO L93 Difference]: Finished difference Result 1600 states and 2154 transitions. [2022-11-03 02:25:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:25:17,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:17,863 INFO L225 Difference]: With dead ends: 1600 [2022-11-03 02:25:17,863 INFO L226 Difference]: Without dead ends: 1309 [2022-11-03 02:25:17,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:25:17,864 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2336 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:17,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1907 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:25:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-03 02:25:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 721. [2022-11-03 02:25:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.3208333333333333) internal successors, (951), 720 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 02:25:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 951 transitions. [2022-11-03 02:25:17,889 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 951 transitions. Word has length 310 [2022-11-03 02:25:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:17,889 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 951 transitions. [2022-11-03 02:25:17,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 951 transitions. [2022-11-03 02:25:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:17,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:17,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:17,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:18,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:18,107 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1563363969, now seen corresponding path program 1 times [2022-11-03 02:25:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:18,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388740647] [2022-11-03 02:25:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:18,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:18,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:18,111 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:18,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:25:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 232 conjunts are in the unsatisfiable core [2022-11-03 02:25:19,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:39,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:39,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:39,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388740647] [2022-11-03 02:25:39,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388740647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:39,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:39,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:25:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586267860] [2022-11-03 02:25:39,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:25:39,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:25:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:25:39,898 INFO L87 Difference]: Start difference. First operand 721 states and 951 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:42,681 INFO L93 Difference]: Finished difference Result 2358 states and 3158 transitions. [2022-11-03 02:25:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:25:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:25:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:42,690 INFO L225 Difference]: With dead ends: 2358 [2022-11-03 02:25:42,690 INFO L226 Difference]: Without dead ends: 2021 [2022-11-03 02:25:42,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:25:42,692 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2902 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 5437 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:42,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 5437 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 198 Unchecked, 0.9s Time] [2022-11-03 02:25:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-11-03 02:25:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 897. [2022-11-03 02:25:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.2946428571428572) internal successors, (1160), 896 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 02:25:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1160 transitions. [2022-11-03 02:25:42,746 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1160 transitions. Word has length 310 [2022-11-03 02:25:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:42,746 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1160 transitions. [2022-11-03 02:25:42,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:25:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1160 transitions. [2022-11-03 02:25:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:25:42,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:42,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:42,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:42,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:42,977 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1571362943, now seen corresponding path program 1 times [2022-11-03 02:25:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:42,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513180977] [2022-11-03 02:25:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:42,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:42,980 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:42,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:25:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 245 conjunts are in the unsatisfiable core [2022-11-03 02:25:43,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:06,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:06,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:06,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513180977] [2022-11-03 02:26:06,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513180977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:06,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:06,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:26:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115458053] [2022-11-03 02:26:06,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:06,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:26:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:26:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:26:06,077 INFO L87 Difference]: Start difference. First operand 897 states and 1160 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:10,398 INFO L93 Difference]: Finished difference Result 2817 states and 3783 transitions. [2022-11-03 02:26:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:26:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:10,403 INFO L225 Difference]: With dead ends: 2817 [2022-11-03 02:26:10,403 INFO L226 Difference]: Without dead ends: 2480 [2022-11-03 02:26:10,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:26:10,405 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 4112 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 5973 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:10,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 5973 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 435 Invalid, 0 Unknown, 75 Unchecked, 1.4s Time] [2022-11-03 02:26:10,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-11-03 02:26:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 899. [2022-11-03 02:26:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.2939866369710469) internal successors, (1162), 898 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states 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 02:26:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1162 transitions. [2022-11-03 02:26:10,442 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1162 transitions. Word has length 310 [2022-11-03 02:26:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:10,443 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1162 transitions. [2022-11-03 02:26:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1162 transitions. [2022-11-03 02:26:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:10,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:10,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:10,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:10,672 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -413830653, now seen corresponding path program 1 times [2022-11-03 02:26:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556001906] [2022-11-03 02:26:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:10,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:10,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:10,676 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:10,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:26:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:11,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:26:11,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:15,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:15,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:15,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556001906] [2022-11-03 02:26:15,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556001906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:15,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:15,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 02:26:15,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330508623] [2022-11-03 02:26:15,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:15,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:26:15,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:26:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:26:15,417 INFO L87 Difference]: Start difference. First operand 899 states and 1162 transitions. Second operand has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:15,915 INFO L93 Difference]: Finished difference Result 2081 states and 2739 transitions. [2022-11-03 02:26:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:26:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:15,919 INFO L225 Difference]: With dead ends: 2081 [2022-11-03 02:26:15,920 INFO L226 Difference]: Without dead ends: 1744 [2022-11-03 02:26:15,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:26:15,921 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 901 mSDsluCounter, 8054 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 705 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:15,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 8460 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 705 Unchecked, 0.3s Time] [2022-11-03 02:26:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-03 02:26:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1209. [2022-11-03 02:26:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.2822847682119205) internal successors, (1549), 1208 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states 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 02:26:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1549 transitions. [2022-11-03 02:26:15,954 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1549 transitions. Word has length 310 [2022-11-03 02:26:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:15,954 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1549 transitions. [2022-11-03 02:26:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1549 transitions. [2022-11-03 02:26:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:15,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:15,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:15,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:16,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:16,173 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:16,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1229877883, now seen corresponding path program 1 times [2022-11-03 02:26:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:16,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293548383] [2022-11-03 02:26:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:16,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:16,177 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:16,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:26:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:16,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 253 conjunts are in the unsatisfiable core [2022-11-03 02:26:17,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:45,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:45,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:45,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293548383] [2022-11-03 02:26:45,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293548383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:45,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:45,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:26:45,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716511552] [2022-11-03 02:26:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:45,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:26:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:26:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:26:45,569 INFO L87 Difference]: Start difference. First operand 1209 states and 1549 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:46,097 INFO L93 Difference]: Finished difference Result 2144 states and 2850 transitions. [2022-11-03 02:26:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:26:46,099 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:46,101 INFO L225 Difference]: With dead ends: 2144 [2022-11-03 02:26:46,101 INFO L226 Difference]: Without dead ends: 1807 [2022-11-03 02:26:46,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:26:46,103 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 983 mSDsluCounter, 7623 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 7931 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 494 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:46,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 7931 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 494 Unchecked, 0.2s Time] [2022-11-03 02:26:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2022-11-03 02:26:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1221. [2022-11-03 02:26:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2827868852459017) internal successors, (1565), 1220 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 02:26:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1565 transitions. [2022-11-03 02:26:46,138 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1565 transitions. Word has length 310 [2022-11-03 02:26:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:46,138 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1565 transitions. [2022-11-03 02:26:46,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1565 transitions. [2022-11-03 02:26:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:46,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:46,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:46,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:46,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:46,367 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:46,368 INFO L85 PathProgramCache]: Analyzing trace with hash 369271175, now seen corresponding path program 1 times [2022-11-03 02:26:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:46,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057081653] [2022-11-03 02:26:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:46,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:46,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:46,372 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:46,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:26:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:47,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:26:47,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:47,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:47,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:47,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057081653] [2022-11-03 02:26:47,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057081653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:47,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:47,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565957774] [2022-11-03 02:26:47,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:47,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:47,528 INFO L87 Difference]: Start difference. First operand 1221 states and 1565 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:47,776 INFO L93 Difference]: Finished difference Result 1589 states and 2075 transitions. [2022-11-03 02:26:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:26:47,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:47,779 INFO L225 Difference]: With dead ends: 1589 [2022-11-03 02:26:47,779 INFO L226 Difference]: Without dead ends: 1252 [2022-11-03 02:26:47,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:26:47,781 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 463 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:47,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 649 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-03 02:26:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1221. [2022-11-03 02:26:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2819672131147541) internal successors, (1564), 1220 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 02:26:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1564 transitions. [2022-11-03 02:26:47,809 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1564 transitions. Word has length 310 [2022-11-03 02:26:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:47,810 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1564 transitions. [2022-11-03 02:26:47,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1564 transitions. [2022-11-03 02:26:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:47,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:47,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:47,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:48,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:48,027 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash 459331465, now seen corresponding path program 1 times [2022-11-03 02:26:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:48,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410788429] [2022-11-03 02:26:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:48,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:48,032 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:48,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:26:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:48,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:26:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:49,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:49,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:49,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410788429] [2022-11-03 02:26:49,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410788429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:49,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:49,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682706351] [2022-11-03 02:26:49,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:49,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:49,138 INFO L87 Difference]: Start difference. First operand 1221 states and 1564 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:49,380 INFO L93 Difference]: Finished difference Result 1593 states and 2078 transitions. [2022-11-03 02:26:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:26:49,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:49,382 INFO L225 Difference]: With dead ends: 1593 [2022-11-03 02:26:49,382 INFO L226 Difference]: Without dead ends: 1256 [2022-11-03 02:26:49,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:26:49,383 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 457 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:49,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 656 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-03 02:26:49,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1221. [2022-11-03 02:26:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2811475409836066) internal successors, (1563), 1220 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states 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 02:26:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1563 transitions. [2022-11-03 02:26:49,412 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1563 transitions. Word has length 310 [2022-11-03 02:26:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:49,412 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1563 transitions. [2022-11-03 02:26:49,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1563 transitions. [2022-11-03 02:26:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:49,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:49,416 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:49,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:49,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:49,631 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:49,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:49,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1463918965, now seen corresponding path program 1 times [2022-11-03 02:26:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171248892] [2022-11-03 02:26:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:49,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:49,635 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:49,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:26:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:50,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:26:50,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:50,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:50,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:50,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171248892] [2022-11-03 02:26:50,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171248892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:50,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:50,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:26:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253313263] [2022-11-03 02:26:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:50,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:26:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:26:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:26:50,967 INFO L87 Difference]: Start difference. First operand 1221 states and 1563 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:51,359 INFO L93 Difference]: Finished difference Result 2217 states and 2928 transitions. [2022-11-03 02:26:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:26:51,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:51,361 INFO L225 Difference]: With dead ends: 2217 [2022-11-03 02:26:51,361 INFO L226 Difference]: Without dead ends: 1880 [2022-11-03 02:26:51,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:26:51,363 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1103 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:51,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 2181 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 59 Unchecked, 0.3s Time] [2022-11-03 02:26:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-11-03 02:26:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1263. [2022-11-03 02:26:51,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.2852614896988908) internal successors, (1622), 1262 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states 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 02:26:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1622 transitions. [2022-11-03 02:26:51,388 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1622 transitions. Word has length 310 [2022-11-03 02:26:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:51,389 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1622 transitions. [2022-11-03 02:26:51,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1622 transitions. [2022-11-03 02:26:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:51,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:51,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:51,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-03 02:26:51,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:51,592 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash -796537075, now seen corresponding path program 1 times [2022-11-03 02:26:51,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:51,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991319018] [2022-11-03 02:26:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:51,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:51,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:51,596 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:51,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:26:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:52,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:26:52,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:52,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:52,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991319018] [2022-11-03 02:26:52,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991319018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:52,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:52,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:26:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641704706] [2022-11-03 02:26:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:26:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:26:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:26:52,739 INFO L87 Difference]: Start difference. First operand 1263 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:52,983 INFO L93 Difference]: Finished difference Result 1621 states and 2114 transitions. [2022-11-03 02:26:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:26:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:52,986 INFO L225 Difference]: With dead ends: 1621 [2022-11-03 02:26:52,987 INFO L226 Difference]: Without dead ends: 1284 [2022-11-03 02:26:52,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:26:52,988 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 443 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:52,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 683 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-03 02:26:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1263. [2022-11-03 02:26:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.2844690966719492) internal successors, (1621), 1262 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states 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 02:26:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1621 transitions. [2022-11-03 02:26:53,022 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1621 transitions. Word has length 310 [2022-11-03 02:26:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:53,022 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1621 transitions. [2022-11-03 02:26:53,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1621 transitions. [2022-11-03 02:26:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:53,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:53,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:53,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:53,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:53,251 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2093238543, now seen corresponding path program 1 times [2022-11-03 02:26:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:53,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931970343] [2022-11-03 02:26:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:53,257 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:53,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:26:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:54,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:26:54,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:55,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:26:55,165 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:26:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931970343] [2022-11-03 02:26:55,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931970343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:55,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:55,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686756826] [2022-11-03 02:26:55,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:55,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:55,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:26:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:55,168 INFO L87 Difference]: Start difference. First operand 1263 states and 1621 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:55,707 INFO L93 Difference]: Finished difference Result 1964 states and 2581 transitions. [2022-11-03 02:26:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:26:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:26:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:55,709 INFO L225 Difference]: With dead ends: 1964 [2022-11-03 02:26:55,710 INFO L226 Difference]: Without dead ends: 1627 [2022-11-03 02:26:55,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 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 02:26:55,711 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1095 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:55,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1680 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:26:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-03 02:26:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1265. [2022-11-03 02:26:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.2840189873417722) internal successors, (1623), 1264 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 02:26:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1623 transitions. [2022-11-03 02:26:55,730 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1623 transitions. Word has length 310 [2022-11-03 02:26:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:55,731 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1623 transitions. [2022-11-03 02:26:55,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:26:55,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1623 transitions. [2022-11-03 02:26:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:55,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:55,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:55,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-03 02:26:55,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:26:55,934 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash -270603119, now seen corresponding path program 1 times [2022-11-03 02:26:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:26:55,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50681838] [2022-11-03 02:26:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:55,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:26:55,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:26:55,938 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:26:55,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:26:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:56,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 253 conjunts are in the unsatisfiable core [2022-11-03 02:26:56,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:24,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:24,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:24,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50681838] [2022-11-03 02:27:24,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50681838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:24,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:24,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:27:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646236790] [2022-11-03 02:27:24,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:27:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:27:24,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:27:24,536 INFO L87 Difference]: Start difference. First operand 1265 states and 1623 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:24,996 INFO L93 Difference]: Finished difference Result 2154 states and 2838 transitions. [2022-11-03 02:27:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:27:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:24,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:25,000 INFO L225 Difference]: With dead ends: 2154 [2022-11-03 02:27:25,000 INFO L226 Difference]: Without dead ends: 1815 [2022-11-03 02:27:25,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:27:25,001 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 781 mSDsluCounter, 7487 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 7792 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 919 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:25,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 7792 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 919 Unchecked, 0.2s Time] [2022-11-03 02:27:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-11-03 02:27:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1319. [2022-11-03 02:27:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.2867981790591805) internal successors, (1696), 1318 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 02:27:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2022-11-03 02:27:25,023 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 310 [2022-11-03 02:27:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:25,024 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2022-11-03 02:27:25,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2022-11-03 02:27:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:25,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:25,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:25,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:25,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:25,236 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -426583661, now seen corresponding path program 1 times [2022-11-03 02:27:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:25,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777051296] [2022-11-03 02:27:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:25,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:25,240 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:25,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:27:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:26,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:27:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:26,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:26,422 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:26,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777051296] [2022-11-03 02:27:26,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777051296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:26,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:26,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:27:26,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898359471] [2022-11-03 02:27:26,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:26,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:27:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:26,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:27:26,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:27:26,425 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:27,079 INFO L93 Difference]: Finished difference Result 2454 states and 3248 transitions. [2022-11-03 02:27:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:27:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:27,082 INFO L225 Difference]: With dead ends: 2454 [2022-11-03 02:27:27,082 INFO L226 Difference]: Without dead ends: 2115 [2022-11-03 02:27:27,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:27:27,083 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1807 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:27,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 2525 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:27:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-11-03 02:27:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1377. [2022-11-03 02:27:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.2899709302325582) internal successors, (1775), 1376 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 02:27:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1775 transitions. [2022-11-03 02:27:27,102 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1775 transitions. Word has length 310 [2022-11-03 02:27:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:27,103 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1775 transitions. [2022-11-03 02:27:27,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1775 transitions. [2022-11-03 02:27:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:27,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:27,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:27,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 02:27:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:27,307 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:27,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513813, now seen corresponding path program 1 times [2022-11-03 02:27:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781196037] [2022-11-03 02:27:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:27,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:27,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:27,310 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:27,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:27:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:28,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:28,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:28,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:28,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781196037] [2022-11-03 02:27:28,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781196037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:28,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:28,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642562768] [2022-11-03 02:27:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:28,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:28,327 INFO L87 Difference]: Start difference. First operand 1377 states and 1775 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:28,561 INFO L93 Difference]: Finished difference Result 1819 states and 2381 transitions. [2022-11-03 02:27:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:27:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:28,563 INFO L225 Difference]: With dead ends: 1819 [2022-11-03 02:27:28,563 INFO L226 Difference]: Without dead ends: 1442 [2022-11-03 02:27:28,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:27:28,564 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 421 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:28,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 738 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:27:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-11-03 02:27:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1377. [2022-11-03 02:27:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.2892441860465116) internal successors, (1774), 1376 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states 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 02:27:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1774 transitions. [2022-11-03 02:27:28,586 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1774 transitions. Word has length 310 [2022-11-03 02:27:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:28,586 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1774 transitions. [2022-11-03 02:27:28,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1774 transitions. [2022-11-03 02:27:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:28,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:28,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:28,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:28,790 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:28,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1850986985, now seen corresponding path program 1 times [2022-11-03 02:27:28,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640260652] [2022-11-03 02:27:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:28,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:28,794 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:28,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:27:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:27:29,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:29,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:29,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:29,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640260652] [2022-11-03 02:27:29,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640260652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:29,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:29,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:29,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881813133] [2022-11-03 02:27:29,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:29,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:29,837 INFO L87 Difference]: Start difference. First operand 1377 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:30,059 INFO L93 Difference]: Finished difference Result 1829 states and 2393 transitions. [2022-11-03 02:27:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:27:30,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:30,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:30,061 INFO L225 Difference]: With dead ends: 1829 [2022-11-03 02:27:30,062 INFO L226 Difference]: Without dead ends: 1452 [2022-11-03 02:27:30,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 02:27:30,063 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 409 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:30,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 761 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:27:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2022-11-03 02:27:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1377. [2022-11-03 02:27:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.288517441860465) internal successors, (1773), 1376 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 02:27:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1773 transitions. [2022-11-03 02:27:30,091 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1773 transitions. Word has length 310 [2022-11-03 02:27:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:30,092 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1773 transitions. [2022-11-03 02:27:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1773 transitions. [2022-11-03 02:27:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:30,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:30,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:30,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-03 02:27:30,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:30,311 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash -989153383, now seen corresponding path program 1 times [2022-11-03 02:27:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:30,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541153345] [2022-11-03 02:27:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:30,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:30,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:30,314 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:30,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:27:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:31,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:27:31,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:36,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:36,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:36,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541153345] [2022-11-03 02:27:36,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541153345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:36,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:36,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 02:27:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217670762] [2022-11-03 02:27:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:36,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:27:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:27:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:27:36,170 INFO L87 Difference]: Start difference. First operand 1377 states and 1773 transitions. Second operand has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:36,227 INFO L93 Difference]: Finished difference Result 1865 states and 2439 transitions. [2022-11-03 02:27:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:27:36,229 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:36,230 INFO L225 Difference]: With dead ends: 1865 [2022-11-03 02:27:36,230 INFO L226 Difference]: Without dead ends: 1488 [2022-11-03 02:27:36,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:27:36,231 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 258 mSDsluCounter, 5549 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 5820 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:36,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 5820 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 252 Unchecked, 0.0s Time] [2022-11-03 02:27:36,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2022-11-03 02:27:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1479. [2022-11-03 02:27:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 1.2936400541271988) internal successors, (1912), 1478 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states 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 02:27:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1912 transitions. [2022-11-03 02:27:36,262 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1912 transitions. Word has length 310 [2022-11-03 02:27:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:36,263 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 1912 transitions. [2022-11-03 02:27:36,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1912 transitions. [2022-11-03 02:27:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:36,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:36,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:36,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-03 02:27:36,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:36,483 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2023641627, now seen corresponding path program 1 times [2022-11-03 02:27:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:36,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974639030] [2022-11-03 02:27:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:36,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:36,486 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:36,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 02:27:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:37,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:27:37,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:37,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:37,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:37,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974639030] [2022-11-03 02:27:37,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974639030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:37,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:37,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:27:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057717081] [2022-11-03 02:27:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:27:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:27:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:27:37,605 INFO L87 Difference]: Start difference. First operand 1479 states and 1912 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:37,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:37,989 INFO L93 Difference]: Finished difference Result 2535 states and 3344 transitions. [2022-11-03 02:27:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:27:37,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:37,992 INFO L225 Difference]: With dead ends: 2535 [2022-11-03 02:27:37,992 INFO L226 Difference]: Without dead ends: 2158 [2022-11-03 02:27:37,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:27:37,994 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 786 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:37,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2865 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 53 Unchecked, 0.3s Time] [2022-11-03 02:27:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-11-03 02:27:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1543. [2022-11-03 02:27:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 1.2963683527885863) internal successors, (1999), 1542 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states 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 02:27:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1999 transitions. [2022-11-03 02:27:38,024 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1999 transitions. Word has length 310 [2022-11-03 02:27:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:38,024 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1999 transitions. [2022-11-03 02:27:38,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:27:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1999 transitions. [2022-11-03 02:27:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:38,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:38,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:38,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-03 02:27:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:27:38,228 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash 301638941, now seen corresponding path program 1 times [2022-11-03 02:27:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:38,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006041022] [2022-11-03 02:27:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:38,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:38,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:38,231 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:38,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:27:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:27:39,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:27:40,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:27:42,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:42,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006041022] [2022-11-03 02:27:42,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006041022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:42,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458937719] [2022-11-03 02:27:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:42,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:42,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:27:42,259 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:27:42,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 02:27:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:43,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:27:43,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:27:43,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:27:43,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1458937719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:43,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:27:43,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:27:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815851782] [2022-11-03 02:27:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:43,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:43,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:27:43,712 INFO L87 Difference]: Start difference. First operand 1543 states and 1999 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 02:27:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:43,828 INFO L93 Difference]: Finished difference Result 3488 states and 4621 transitions. [2022-11-03 02:27:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:43,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:43,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:43,832 INFO L225 Difference]: With dead ends: 3488 [2022-11-03 02:27:43,833 INFO L226 Difference]: Without dead ends: 3111 [2022-11-03 02:27:43,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:27:43,834 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1437 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:43,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1710 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:27:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-11-03 02:27:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 1559. [2022-11-03 02:27:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.297175866495507) internal successors, (2021), 1558 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states 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 02:27:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2021 transitions. [2022-11-03 02:27:43,871 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2021 transitions. Word has length 310 [2022-11-03 02:27:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:43,871 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2021 transitions. [2022-11-03 02:27:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 02:27:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2021 transitions. [2022-11-03 02:27:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:43,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:43,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:43,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 02:27:44,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2022-11-03 02:27:44,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:44,291 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:44,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash 358897243, now seen corresponding path program 1 times [2022-11-03 02:27:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647266103] [2022-11-03 02:27:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:44,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:44,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:44,294 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:44,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 02:27:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:45,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:27:45,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:27:46,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:27:48,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:27:48,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647266103] [2022-11-03 02:27:48,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647266103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:48,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599397276] [2022-11-03 02:27:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:48,578 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:27:48,583 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:27:48,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-03 02:27:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:50,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:27:50,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:51,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:51,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1599397276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469553397] [2022-11-03 02:27:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:51,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:51,782 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:51,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-03 02:27:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:27:52,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:53,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:27:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:53,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469553397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:27:53,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:27:53,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 02:27:53,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433836528] [2022-11-03 02:27:53,819 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:27:53,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:27:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:27:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:27:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:27:53,823 INFO L87 Difference]: Start difference. First operand 1559 states and 2021 transitions. Second operand has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 02:27:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:55,768 INFO L93 Difference]: Finished difference Result 4569 states and 6114 transitions. [2022-11-03 02:27:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:27:55,768 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 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 310 [2022-11-03 02:27:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:55,771 INFO L225 Difference]: With dead ends: 4569 [2022-11-03 02:27:55,771 INFO L226 Difference]: Without dead ends: 4176 [2022-11-03 02:27:55,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1839 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=435, Invalid=1287, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:27:55,773 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 4179 mSDsluCounter, 7098 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 7392 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:55,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4179 Valid, 7392 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 609 Invalid, 0 Unknown, 141 Unchecked, 1.1s Time] [2022-11-03 02:27:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2022-11-03 02:27:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 2299. [2022-11-03 02:27:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 1.305047867711053) internal successors, (2999), 2298 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states 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 02:27:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2999 transitions. [2022-11-03 02:27:55,870 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2999 transitions. Word has length 310 [2022-11-03 02:27:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:55,871 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2999 transitions. [2022-11-03 02:27:55,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 02:27:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2999 transitions. [2022-11-03 02:27:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:27:55,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:55,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:55,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:56,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-03 02:27:56,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Forceful destruction successful, exit code 0 [2022-11-03 02:27:56,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:27:56,493 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash -660575141, now seen corresponding path program 1 times [2022-11-03 02:27:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:27:56,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789401454] [2022-11-03 02:27:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:56,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:27:56,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:27:56,497 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:27:56,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:27:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:57,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:27:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:27:59,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:02,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:28:02,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789401454] [2022-11-03 02:28:02,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789401454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:02,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [765060099] [2022-11-03 02:28:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:02,265 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:02,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:28:02,266 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:28:02,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 02:28:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:03,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:28:03,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:28:03,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:03,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [765060099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:03,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:28:03,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:28:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337373037] [2022-11-03 02:28:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:28:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:28:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:28:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:28:03,681 INFO L87 Difference]: Start difference. First operand 2299 states and 2999 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 02:28:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:03,857 INFO L93 Difference]: Finished difference Result 4492 states and 5953 transitions. [2022-11-03 02:28:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:28:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 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 310 [2022-11-03 02:28:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:03,860 INFO L225 Difference]: With dead ends: 4492 [2022-11-03 02:28:03,860 INFO L226 Difference]: Without dead ends: 3619 [2022-11-03 02:28:03,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:28:03,862 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1082 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:03,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1417 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:28:03,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2022-11-03 02:28:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 2305. [2022-11-03 02:28:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 1.3042534722222223) internal successors, (3005), 2304 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states 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 02:28:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3005 transitions. [2022-11-03 02:28:03,927 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3005 transitions. Word has length 310 [2022-11-03 02:28:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:03,928 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3005 transitions. [2022-11-03 02:28:03,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 02:28:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3005 transitions. [2022-11-03 02:28:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:28:03,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:03,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:03,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 02:28:04,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:04,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:04,347 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:04,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1640247449, now seen corresponding path program 1 times [2022-11-03 02:28:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:28:04,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286074886] [2022-11-03 02:28:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:04,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:28:04,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:28:04,351 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:28:04,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:28:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:05,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:28:05,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:07,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:10,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:28:10,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286074886] [2022-11-03 02:28:10,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286074886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:10,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [84596364] [2022-11-03 02:28:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:10,128 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:10,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:28:10,131 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:28:10,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 02:28:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:11,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:28:11,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:28:11,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:11,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [84596364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:11,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:28:11,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:28:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079590384] [2022-11-03 02:28:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:11,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:28:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:28:11,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:28:11,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:28:11,784 INFO L87 Difference]: Start difference. First operand 2305 states and 3005 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 02:28:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:11,985 INFO L93 Difference]: Finished difference Result 4528 states and 5995 transitions. [2022-11-03 02:28:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:28:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 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 310 [2022-11-03 02:28:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:11,990 INFO L225 Difference]: With dead ends: 4528 [2022-11-03 02:28:11,990 INFO L226 Difference]: Without dead ends: 3649 [2022-11-03 02:28:11,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:28:11,993 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1083 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:11,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1416 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:28:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-11-03 02:28:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 2341. [2022-11-03 02:28:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2340 states have (on average 1.3047008547008547) internal successors, (3053), 2340 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states 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 02:28:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3053 transitions. [2022-11-03 02:28:12,071 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3053 transitions. Word has length 310 [2022-11-03 02:28:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:12,071 INFO L495 AbstractCegarLoop]: Abstraction has 2341 states and 3053 transitions. [2022-11-03 02:28:12,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 02:28:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3053 transitions. [2022-11-03 02:28:12,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:28:12,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:12,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:12,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:12,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:28:12,495 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1247220439, now seen corresponding path program 1 times [2022-11-03 02:28:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:28:12,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803085696] [2022-11-03 02:28:12,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:12,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:28:12,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:28:12,500 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:28:12,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:28:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:13,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:28:13,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:16,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:18,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:28:18,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803085696] [2022-11-03 02:28:18,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803085696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:18,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093971324] [2022-11-03 02:28:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:18,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:28:18,804 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:28:18,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 02:28:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:20,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:28:20,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:23,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:28:30,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1093971324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:30,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890272685] [2022-11-03 02:28:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:30,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:30,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:30,332 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:28:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-03 02:28:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:31,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:28:31,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:28:32,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 29 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:28:33,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890272685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:33,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:28:33,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 10, 10] total 27 [2022-11-03 02:28:33,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042958673] [2022-11-03 02:28:33,395 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:28:33,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:28:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:28:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:28:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:28:33,397 INFO L87 Difference]: Start difference. First operand 2341 states and 3053 transitions. Second operand has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 02:28:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:35,118 INFO L93 Difference]: Finished difference Result 7279 states and 9588 transitions. [2022-11-03 02:28:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:28:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 0 states have call successors, (0), 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 310 [2022-11-03 02:28:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:35,124 INFO L225 Difference]: With dead ends: 7279 [2022-11-03 02:28:35,124 INFO L226 Difference]: Without dead ends: 6364 [2022-11-03 02:28:35,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1868 GetRequests, 1831 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:28:35,127 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2635 mSDsluCounter, 9661 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2635 SdHoareTripleChecker+Valid, 9953 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:35,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2635 Valid, 9953 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 255 Unchecked, 0.5s Time] [2022-11-03 02:28:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2022-11-03 02:28:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3719. [2022-11-03 02:28:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3719 states, 3718 states have (on average 1.2937062937062938) internal successors, (4810), 3718 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states 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 02:28:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3719 states to 3719 states and 4810 transitions. [2022-11-03 02:28:35,206 INFO L78 Accepts]: Start accepts. Automaton has 3719 states and 4810 transitions. Word has length 310 [2022-11-03 02:28:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:35,207 INFO L495 AbstractCegarLoop]: Abstraction has 3719 states and 4810 transitions. [2022-11-03 02:28:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 02:28:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3719 states and 4810 transitions. [2022-11-03 02:28:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:28:35,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:35,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:35,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2022-11-03 02:28:35,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-03 02:28:35,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 02:28:35,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:28:35,813 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1756693529, now seen corresponding path program 1 times [2022-11-03 02:28:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:28:35,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281215587] [2022-11-03 02:28:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:35,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:28:35,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:28:35,817 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:28:35,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 02:28:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:36,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-03 02:28:36,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:28:45,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:28:51,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:28:51,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281215587] [2022-11-03 02:28:51,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281215587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:28:51,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [394413700] [2022-11-03 02:28:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:51,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:28:51,045 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:28:51,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-03 02:28:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:53,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 02:28:53,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 02:29:03,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:29:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [394413700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929118325] [2022-11-03 02:29:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:06,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:06,630 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:06,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-03 02:29:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:07,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:29:07,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:29:16,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:29:19,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929118325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:19,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:29:19,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 19, 9, 17, 10] total 40 [2022-11-03 02:29:19,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556334553] [2022-11-03 02:29:19,175 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:29:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 02:29:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 02:29:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1373, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:29:19,178 INFO L87 Difference]: Start difference. First operand 3719 states and 4810 transitions. Second operand has 40 states, 40 states have (on average 11.975) internal successors, (479), 40 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 02:29:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:27,759 INFO L93 Difference]: Finished difference Result 4357 states and 5623 transitions. [2022-11-03 02:29:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-03 02:29:27,759 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 11.975) internal successors, (479), 40 states have internal predecessors, (479), 0 states have call successors, (0), 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 310 [2022-11-03 02:29:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:27,762 INFO L225 Difference]: With dead ends: 4357 [2022-11-03 02:29:27,762 INFO L226 Difference]: Without dead ends: 4355 [2022-11-03 02:29:27,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1897 GetRequests, 1820 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=855, Invalid=4845, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 02:29:27,763 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2044 mSDsluCounter, 8369 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 8734 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1157 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:27,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 8734 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1003 Invalid, 0 Unknown, 1157 Unchecked, 1.5s Time] [2022-11-03 02:29:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2022-11-03 02:29:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 3799. [2022-11-03 02:29:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3798 states have (on average 1.2938388625592416) internal successors, (4914), 3798 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states 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 02:29:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 4914 transitions. [2022-11-03 02:29:27,824 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 4914 transitions. Word has length 310 [2022-11-03 02:29:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:27,824 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 4914 transitions. [2022-11-03 02:29:27,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 11.975) internal successors, (479), 40 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 02:29:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 4914 transitions. [2022-11-03 02:29:27,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:29:27,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:27,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:27,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:28,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-11-03 02:29:28,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:28,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:28,429 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1756753111, now seen corresponding path program 1 times [2022-11-03 02:29:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:28,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786327429] [2022-11-03 02:29:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:28,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:28,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:28,432 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:28,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 02:29:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:29,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:29:29,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:29:29,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:29,528 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786327429] [2022-11-03 02:29:29,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786327429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:29,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:29,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:29:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400150388] [2022-11-03 02:29:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:29:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:29:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:29:29,530 INFO L87 Difference]: Start difference. First operand 3799 states and 4914 transitions. Second operand has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 02:29:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:29,743 INFO L93 Difference]: Finished difference Result 8669 states and 11291 transitions. [2022-11-03 02:29:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:29:29,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 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 310 [2022-11-03 02:29:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:29,747 INFO L225 Difference]: With dead ends: 8669 [2022-11-03 02:29:29,747 INFO L226 Difference]: Without dead ends: 5838 [2022-11-03 02:29:29,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:29:29,750 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 876 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:29,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1449 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-11-03 02:29:29,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 3895. [2022-11-03 02:29:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3894 states have (on average 1.2850539291217258) internal successors, (5004), 3894 states have internal predecessors, (5004), 0 states have call successors, (0), 0 states 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 02:29:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5004 transitions. [2022-11-03 02:29:29,855 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5004 transitions. Word has length 310 [2022-11-03 02:29:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:29,855 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 5004 transitions. [2022-11-03 02:29:29,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 02:29:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5004 transitions. [2022-11-03 02:29:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:29:29,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:29,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:29,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:30,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:30,084 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:30,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2014858967, now seen corresponding path program 1 times [2022-11-03 02:29:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:30,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758590137] [2022-11-03 02:29:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:30,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:30,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:30,087 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:30,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 02:29:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:30,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:29:30,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:29:30,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:30,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:30,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758590137] [2022-11-03 02:29:30,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758590137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:30,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:30,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607606901] [2022-11-03 02:29:30,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:30,916 INFO L87 Difference]: Start difference. First operand 3895 states and 5004 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 02:29:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:31,172 INFO L93 Difference]: Finished difference Result 7927 states and 10279 transitions. [2022-11-03 02:29:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:29:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 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 310 [2022-11-03 02:29:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:31,177 INFO L225 Difference]: With dead ends: 7927 [2022-11-03 02:29:31,177 INFO L226 Difference]: Without dead ends: 5838 [2022-11-03 02:29:31,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 309 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 02:29:31,180 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 650 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:31,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1648 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2022-11-03 02:29:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 3895. [2022-11-03 02:29:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3894 states have (on average 1.2788906009244991) internal successors, (4980), 3894 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states 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 02:29:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 4980 transitions. [2022-11-03 02:29:31,291 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 4980 transitions. Word has length 310 [2022-11-03 02:29:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:31,291 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 4980 transitions. [2022-11-03 02:29:31,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 02:29:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 4980 transitions. [2022-11-03 02:29:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:29:31,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:31,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:31,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:31,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:31,525 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2014918549, now seen corresponding path program 1 times [2022-11-03 02:29:31,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:31,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460935550] [2022-11-03 02:29:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:31,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:31,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:31,530 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:31,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 02:29:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:29:32,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 02:29:39,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:29:49,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:49,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460935550] [2022-11-03 02:29:49,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460935550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:49,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [233588372] [2022-11-03 02:29:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:49,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:29:49,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:29:49,018 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:29:49,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2022-11-03 02:29:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:29:51,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 02:29:58,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:30:05,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [233588372] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:30:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370895774] [2022-11-03 02:30:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:05,835 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:05,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-03 02:30:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:06,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-03 02:30:06,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:30:11,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:30:16,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370895774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:30:16,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:30:16,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24, 20, 22, 23] total 73 [2022-11-03 02:30:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197911895] [2022-11-03 02:30:16,868 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:30:16,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-03 02:30:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:30:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-03 02:30:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=4725, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 02:30:16,872 INFO L87 Difference]: Start difference. First operand 3895 states and 4980 transitions. Second operand has 73 states, 73 states have (on average 11.082191780821917) internal successors, (809), 73 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 02:30:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:45,734 INFO L93 Difference]: Finished difference Result 18956 states and 25072 transitions. [2022-11-03 02:30:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-03 02:30:45,736 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 11.082191780821917) internal successors, (809), 73 states have internal predecessors, (809), 0 states have call successors, (0), 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 310 [2022-11-03 02:30:45,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:45,746 INFO L225 Difference]: With dead ends: 18956 [2022-11-03 02:30:45,746 INFO L226 Difference]: Without dead ends: 18954 [2022-11-03 02:30:45,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1990 GetRequests, 1794 SyntacticMatches, 9 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11492 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=4957, Invalid=30575, Unknown=0, NotChecked=0, Total=35532 [2022-11-03 02:30:45,751 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 7503 mSDsluCounter, 29662 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7503 SdHoareTripleChecker+Valid, 30465 SdHoareTripleChecker+Invalid, 12979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11018 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:45,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7503 Valid, 30465 Invalid, 12979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1891 Invalid, 0 Unknown, 11018 Unchecked, 3.6s Time] [2022-11-03 02:30:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18954 states. [2022-11-03 02:30:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18954 to 5926. [2022-11-03 02:30:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 5925 states have (on average 1.2911392405063291) internal successors, (7650), 5925 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states 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 02:30:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 7650 transitions. [2022-11-03 02:30:45,919 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 7650 transitions. Word has length 310 [2022-11-03 02:30:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:45,919 INFO L495 AbstractCegarLoop]: Abstraction has 5926 states and 7650 transitions. [2022-11-03 02:30:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 11.082191780821917) internal successors, (809), 73 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 02:30:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 7650 transitions. [2022-11-03 02:30:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:30:45,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:45,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:30:45,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:46,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 02:30:46,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-11-03 02:30:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:46,525 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1205571923, now seen corresponding path program 1 times [2022-11-03 02:30:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:30:46,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137610674] [2022-11-03 02:30:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:46,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:30:46,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:30:46,528 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:30:46,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 02:30:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:47,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:30:47,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:30:48,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:30:48,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:30:48,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137610674] [2022-11-03 02:30:48,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137610674] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:48,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:30:48,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 02:30:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271605774] [2022-11-03 02:30:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:48,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:30:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:30:48,093 INFO L87 Difference]: Start difference. First operand 5926 states and 7650 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 02:30:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:48,389 INFO L93 Difference]: Finished difference Result 19872 states and 25952 transitions. [2022-11-03 02:30:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:30:48,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 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 310 [2022-11-03 02:30:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:48,399 INFO L225 Difference]: With dead ends: 19872 [2022-11-03 02:30:48,399 INFO L226 Difference]: Without dead ends: 15108 [2022-11-03 02:30:48,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:30:48,404 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1731 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:48,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 1287 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:30:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15108 states. [2022-11-03 02:30:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15108 to 6190. [2022-11-03 02:30:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6190 states, 6189 states have (on average 1.2855065438681532) internal successors, (7956), 6189 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states 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 02:30:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6190 states to 6190 states and 7956 transitions. [2022-11-03 02:30:48,571 INFO L78 Accepts]: Start accepts. Automaton has 6190 states and 7956 transitions. Word has length 310 [2022-11-03 02:30:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:48,571 INFO L495 AbstractCegarLoop]: Abstraction has 6190 states and 7956 transitions. [2022-11-03 02:30:48,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 02:30:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states and 7956 transitions. [2022-11-03 02:30:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:30:48,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:48,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:30:48,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-03 02:30:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:30:48,787 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1326189799, now seen corresponding path program 1 times [2022-11-03 02:30:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:30:48,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392490777] [2022-11-03 02:30:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:48,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:30:48,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:30:48,791 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:30:48,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 02:30:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:30:49,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:30:54,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:31:01,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:31:01,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392490777] [2022-11-03 02:31:01,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392490777] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:31:01,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981614504] [2022-11-03 02:31:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:01,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:31:01,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:31:01,146 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:31:01,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2022-11-03 02:31:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-03 02:31:02,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:31:08,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:31:10,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1981614504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:31:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22441888] [2022-11-03 02:31:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:10,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:10,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:31:10,988 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:31:10,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-03 02:31:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:11,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 02:31:11,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 02:31:16,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 02:31:19,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22441888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:31:19,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:31:19,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15, 13, 17, 17] total 34 [2022-11-03 02:31:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786589217] [2022-11-03 02:31:19,466 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:31:19,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 02:31:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:31:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 02:31:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:31:19,467 INFO L87 Difference]: Start difference. First operand 6190 states and 7956 transitions. Second operand has 34 states, 34 states have (on average 13.205882352941176) internal successors, (449), 34 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 02:31:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:24,586 INFO L93 Difference]: Finished difference Result 14396 states and 18840 transitions. [2022-11-03 02:31:24,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-03 02:31:24,587 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 13.205882352941176) internal successors, (449), 34 states have internal predecessors, (449), 0 states have call successors, (0), 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 310 [2022-11-03 02:31:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:24,594 INFO L225 Difference]: With dead ends: 14396 [2022-11-03 02:31:24,594 INFO L226 Difference]: Without dead ends: 14394 [2022-11-03 02:31:24,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1896 GetRequests, 1828 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1046, Invalid=3510, Unknown=0, NotChecked=0, Total=4556 [2022-11-03 02:31:24,597 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 6287 mSDsluCounter, 8963 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6287 SdHoareTripleChecker+Valid, 9631 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 826 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:24,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6287 Valid, 9631 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1030 Invalid, 0 Unknown, 826 Unchecked, 1.6s Time] [2022-11-03 02:31:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14394 states. [2022-11-03 02:31:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14394 to 6198. [2022-11-03 02:31:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6198 states, 6197 states have (on average 1.2851379699854768) internal successors, (7964), 6197 states have internal predecessors, (7964), 0 states have call successors, (0), 0 states 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 02:31:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 7964 transitions. [2022-11-03 02:31:24,724 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 7964 transitions. Word has length 310 [2022-11-03 02:31:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:24,724 INFO L495 AbstractCegarLoop]: Abstraction has 6198 states and 7964 transitions. [2022-11-03 02:31:24,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 13.205882352941176) internal successors, (449), 34 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 02:31:24,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 7964 transitions. [2022-11-03 02:31:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:31:24,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:24,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:24,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Ended with exit code 0 [2022-11-03 02:31:24,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-03 02:31:25,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-11-03 02:31:25,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:25,330 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1268931497, now seen corresponding path program 1 times [2022-11-03 02:31:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:31:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708478322] [2022-11-03 02:31:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:25,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:31:25,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:31:25,333 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:31:25,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 02:31:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:26,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:31:26,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:31:26,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:31:26,693 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:31:26,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708478322] [2022-11-03 02:31:26,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708478322] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:31:26,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:31:26,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 02:31:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505693345] [2022-11-03 02:31:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:26,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:31:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:31:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:31:26,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:31:26,695 INFO L87 Difference]: Start difference. First operand 6198 states and 7964 transitions. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:31:27,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:27,020 INFO L93 Difference]: Finished difference Result 15698 states and 20463 transitions. [2022-11-03 02:31:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:31:27,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 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 310 [2022-11-03 02:31:27,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:27,028 INFO L225 Difference]: With dead ends: 15698 [2022-11-03 02:31:27,029 INFO L226 Difference]: Without dead ends: 10714 [2022-11-03 02:31:27,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:31:27,033 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 861 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:27,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1734 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:31:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10714 states. [2022-11-03 02:31:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10714 to 6198. [2022-11-03 02:31:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6198 states, 6197 states have (on average 1.2783604970146845) internal successors, (7922), 6197 states have internal predecessors, (7922), 0 states have call successors, (0), 0 states 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 02:31:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 7922 transitions. [2022-11-03 02:31:27,211 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 7922 transitions. Word has length 310 [2022-11-03 02:31:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:27,212 INFO L495 AbstractCegarLoop]: Abstraction has 6198 states and 7922 transitions. [2022-11-03 02:31:27,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:31:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 7922 transitions. [2022-11-03 02:31:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:31:27,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:27,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:27,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-03 02:31:27,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:31:27,417 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash 993850195, now seen corresponding path program 1 times [2022-11-03 02:31:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:31:27,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690877895] [2022-11-03 02:31:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:27,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:31:27,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:31:27,421 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:31:27,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 02:31:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:28,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:31:28,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:31:28,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:31:28,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:31:28,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690877895] [2022-11-03 02:31:28,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690877895] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:31:28,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:31:28,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 02:31:28,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60836895] [2022-11-03 02:31:28,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:28,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:31:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:31:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:31:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:31:28,726 INFO L87 Difference]: Start difference. First operand 6198 states and 7922 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 02:31:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:28,921 INFO L93 Difference]: Finished difference Result 15820 states and 20515 transitions. [2022-11-03 02:31:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:31:28,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 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 310 [2022-11-03 02:31:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:28,928 INFO L225 Difference]: With dead ends: 15820 [2022-11-03 02:31:28,928 INFO L226 Difference]: Without dead ends: 10758 [2022-11-03 02:31:28,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:31:28,932 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 875 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:28,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1590 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:31:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2022-11-03 02:31:29,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 6198. [2022-11-03 02:31:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6198 states, 6197 states have (on average 1.2690011295788284) internal successors, (7864), 6197 states have internal predecessors, (7864), 0 states have call successors, (0), 0 states 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 02:31:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 7864 transitions. [2022-11-03 02:31:29,052 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 7864 transitions. Word has length 310 [2022-11-03 02:31:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:29,052 INFO L495 AbstractCegarLoop]: Abstraction has 6198 states and 7864 transitions. [2022-11-03 02:31:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 02:31:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 7864 transitions. [2022-11-03 02:31:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:31:29,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:29,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:29,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-03 02:31:29,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:31:29,257 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash 184503569, now seen corresponding path program 1 times [2022-11-03 02:31:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:31:29,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590115237] [2022-11-03 02:31:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:31:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:31:29,260 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:31:29,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 02:31:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:30,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:31:30,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:31:34,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:31:42,503 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:31:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590115237] [2022-11-03 02:31:42,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590115237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:31:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1404540007] [2022-11-03 02:31:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:42,504 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:31:42,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:31:42,505 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:31:42,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2022-11-03 02:31:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:44,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-03 02:31:44,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:31:48,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:31:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:31:51,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1404540007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:31:51,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961203861] [2022-11-03 02:31:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:51,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:51,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:31:51,608 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:31:51,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-11-03 02:31:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-03 02:31:52,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 02:31:57,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 02:32:00,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961203861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:00,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:32:00,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19, 17, 21, 21] total 42 [2022-11-03 02:32:00,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577787618] [2022-11-03 02:32:00,823 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:32:00,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 02:32:00,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:32:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 02:32:00,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:32:00,824 INFO L87 Difference]: Start difference. First operand 6198 states and 7864 transitions. Second operand has 42 states, 42 states have (on average 10.785714285714286) internal successors, (453), 42 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 02:32:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:09,733 INFO L93 Difference]: Finished difference Result 17220 states and 22344 transitions. [2022-11-03 02:32:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 02:32:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 10.785714285714286) internal successors, (453), 42 states have internal predecessors, (453), 0 states have call successors, (0), 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 310 [2022-11-03 02:32:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:09,744 INFO L225 Difference]: With dead ends: 17220 [2022-11-03 02:32:09,744 INFO L226 Difference]: Without dead ends: 17218 [2022-11-03 02:32:09,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1902 GetRequests, 1817 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1755, Invalid=5385, Unknown=0, NotChecked=0, Total=7140 [2022-11-03 02:32:09,747 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 5621 mSDsluCounter, 14362 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5621 SdHoareTripleChecker+Valid, 15238 SdHoareTripleChecker+Invalid, 4633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2338 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:09,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5621 Valid, 15238 Invalid, 4633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2238 Invalid, 0 Unknown, 2338 Unchecked, 2.9s Time] [2022-11-03 02:32:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17218 states. [2022-11-03 02:32:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17218 to 6206. [2022-11-03 02:32:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6206 states, 6205 states have (on average 1.2686543110394843) internal successors, (7872), 6205 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states 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 02:32:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6206 states to 6206 states and 7872 transitions. [2022-11-03 02:32:09,885 INFO L78 Accepts]: Start accepts. Automaton has 6206 states and 7872 transitions. Word has length 310 [2022-11-03 02:32:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:09,886 INFO L495 AbstractCegarLoop]: Abstraction has 6206 states and 7872 transitions. [2022-11-03 02:32:09,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.785714285714286) internal successors, (453), 42 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 02:32:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6206 states and 7872 transitions. [2022-11-03 02:32:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:32:09,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:09,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:09,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-11-03 02:32:10,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-03 02:32:10,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Ended with exit code 0 [2022-11-03 02:32:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:32:10,491 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash -366164155, now seen corresponding path program 1 times [2022-11-03 02:32:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:32:10,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503093626] [2022-11-03 02:32:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:10,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:32:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:32:10,494 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:32:10,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-03 02:32:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:11,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:32:11,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:32:12,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:32:14,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:32:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503093626] [2022-11-03 02:32:14,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503093626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1544545512] [2022-11-03 02:32:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:14,963 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:32:14,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:32:14,964 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:32:14,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (92)] Waiting until timeout for monitored process [2022-11-03 02:32:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:16,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:32:16,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:32:17,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:32:18,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1544545512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430128225] [2022-11-03 02:32:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:18,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:18,165 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:18,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-11-03 02:32:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:18,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:32:18,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:32:19,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:32:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:32:21,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430128225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:32:21,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:32:21,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 7, 7] total 29 [2022-11-03 02:32:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252587705] [2022-11-03 02:32:21,082 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:32:21,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:32:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:32:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:32:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:32:21,084 INFO L87 Difference]: Start difference. First operand 6206 states and 7872 transitions. Second operand has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 02:32:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:58,982 INFO L93 Difference]: Finished difference Result 34850 states and 45932 transitions. [2022-11-03 02:32:58,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-11-03 02:32:58,984 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 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 310 [2022-11-03 02:32:58,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:58,999 INFO L225 Difference]: With dead ends: 34850 [2022-11-03 02:32:58,999 INFO L226 Difference]: Without dead ends: 33122 [2022-11-03 02:32:59,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1827 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14417 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=7397, Invalid=30823, Unknown=0, NotChecked=0, Total=38220 [2022-11-03 02:32:59,005 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 28154 mSDsluCounter, 13064 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28154 SdHoareTripleChecker+Valid, 14191 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:59,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28154 Valid, 14191 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:32:59,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33122 states. [2022-11-03 02:32:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33122 to 6960. [2022-11-03 02:32:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 6959 states have (on average 1.2751832159793073) internal successors, (8874), 6959 states have internal predecessors, (8874), 0 states have call successors, (0), 0 states 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 02:32:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 8874 transitions. [2022-11-03 02:32:59,292 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 8874 transitions. Word has length 310 [2022-11-03 02:32:59,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:59,292 INFO L495 AbstractCegarLoop]: Abstraction has 6960 states and 8874 transitions. [2022-11-03 02:32:59,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 02:32:59,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 8874 transitions. [2022-11-03 02:32:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:32:59,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:59,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:59,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-03 02:32:59,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:59,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (92)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:59,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:32:59,899 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1423328221, now seen corresponding path program 1 times [2022-11-03 02:32:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:32:59,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486057918] [2022-11-03 02:32:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:59,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:32:59,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:32:59,903 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:32:59,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-03 02:33:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:00,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:33:00,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:01,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:01,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486057918] [2022-11-03 02:33:01,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486057918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:01,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:01,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:33:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702536852] [2022-11-03 02:33:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:33:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:33:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:33:01,118 INFO L87 Difference]: Start difference. First operand 6960 states and 8874 transitions. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:01,641 INFO L93 Difference]: Finished difference Result 12982 states and 16608 transitions. [2022-11-03 02:33:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:01,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:01,646 INFO L225 Difference]: With dead ends: 12982 [2022-11-03 02:33:01,646 INFO L226 Difference]: Without dead ends: 8520 [2022-11-03 02:33:01,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 306 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 02:33:01,650 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 727 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:01,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1324 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:33:01,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8520 states. [2022-11-03 02:33:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8520 to 6468. [2022-11-03 02:33:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6468 states, 6467 states have (on average 1.266120303077161) internal successors, (8188), 6467 states have internal predecessors, (8188), 0 states have call successors, (0), 0 states 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 02:33:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6468 states to 6468 states and 8188 transitions. [2022-11-03 02:33:01,780 INFO L78 Accepts]: Start accepts. Automaton has 6468 states and 8188 transitions. Word has length 310 [2022-11-03 02:33:01,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:01,781 INFO L495 AbstractCegarLoop]: Abstraction has 6468 states and 8188 transitions. [2022-11-03 02:33:01,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 6468 states and 8188 transitions. [2022-11-03 02:33:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:01,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:01,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:01,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Ended with exit code 0 [2022-11-03 02:33:01,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:01,986 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1717864969, now seen corresponding path program 1 times [2022-11-03 02:33:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:01,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527900040] [2022-11-03 02:33:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:01,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:01,989 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-03 02:33:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-03 02:33:02,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:27,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:27,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:27,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527900040] [2022-11-03 02:33:27,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527900040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:27,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:27,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 02:33:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99740370] [2022-11-03 02:33:27,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:33:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:33:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:33:27,320 INFO L87 Difference]: Start difference. First operand 6468 states and 8188 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:27,759 INFO L93 Difference]: Finished difference Result 14383 states and 18541 transitions. [2022-11-03 02:33:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:33:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:27,764 INFO L225 Difference]: With dead ends: 14383 [2022-11-03 02:33:27,764 INFO L226 Difference]: Without dead ends: 10133 [2022-11-03 02:33:27,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:33:27,767 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 297 mSDsluCounter, 4646 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:27,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 5219 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 197 Unchecked, 0.2s Time] [2022-11-03 02:33:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10133 states. [2022-11-03 02:33:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 6992. [2022-11-03 02:33:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 6991 states have (on average 1.2557574023744815) internal successors, (8779), 6991 states have internal predecessors, (8779), 0 states have call successors, (0), 0 states 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 02:33:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 8779 transitions. [2022-11-03 02:33:27,919 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 8779 transitions. Word has length 310 [2022-11-03 02:33:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:27,919 INFO L495 AbstractCegarLoop]: Abstraction has 6992 states and 8779 transitions. [2022-11-03 02:33:27,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 8779 transitions. [2022-11-03 02:33:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:27,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:27,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:27,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:28,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:28,125 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1471252231, now seen corresponding path program 1 times [2022-11-03 02:33:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:28,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783591444] [2022-11-03 02:33:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:28,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:28,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:28,127 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:28,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 02:33:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:28,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-03 02:33:28,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:37,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:37,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:37,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783591444] [2022-11-03 02:33:37,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783591444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:37,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:37,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-03 02:33:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920510882] [2022-11-03 02:33:37,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:37,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:33:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:33:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:33:37,421 INFO L87 Difference]: Start difference. First operand 6992 states and 8779 transitions. Second operand has 23 states, 23 states have (on average 13.478260869565217) internal successors, (310), 23 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:39,595 INFO L93 Difference]: Finished difference Result 15049 states and 19318 transitions. [2022-11-03 02:33:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:33:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.478260869565217) internal successors, (310), 23 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:39,601 INFO L225 Difference]: With dead ends: 15049 [2022-11-03 02:33:39,601 INFO L226 Difference]: Without dead ends: 10831 [2022-11-03 02:33:39,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 02:33:39,604 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1096 mSDsluCounter, 10146 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 10666 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 746 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:39,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 10666 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 372 Invalid, 0 Unknown, 746 Unchecked, 0.6s Time] [2022-11-03 02:33:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10831 states. [2022-11-03 02:33:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10831 to 7356. [2022-11-03 02:33:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7356 states, 7355 states have (on average 1.2493541808293678) internal successors, (9189), 7355 states have internal predecessors, (9189), 0 states have call successors, (0), 0 states 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 02:33:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 9189 transitions. [2022-11-03 02:33:39,788 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 9189 transitions. Word has length 310 [2022-11-03 02:33:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:39,788 INFO L495 AbstractCegarLoop]: Abstraction has 7356 states and 9189 transitions. [2022-11-03 02:33:39,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.478260869565217) internal successors, (310), 23 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 9189 transitions. [2022-11-03 02:33:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:39,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:39,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:39,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2022-11-03 02:33:40,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:40,007 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1666182775, now seen corresponding path program 1 times [2022-11-03 02:33:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:40,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684000688] [2022-11-03 02:33:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:40,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:40,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:40,010 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:40,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-03 02:33:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:40,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:33:40,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:41,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:41,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684000688] [2022-11-03 02:33:41,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684000688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:41,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:41,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:33:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17081116] [2022-11-03 02:33:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:41,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:33:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:33:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:33:41,602 INFO L87 Difference]: Start difference. First operand 7356 states and 9189 transitions. Second operand has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:43,558 INFO L93 Difference]: Finished difference Result 24648 states and 31941 transitions. [2022-11-03 02:33:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:33:43,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:43,568 INFO L225 Difference]: With dead ends: 24648 [2022-11-03 02:33:43,568 INFO L226 Difference]: Without dead ends: 20516 [2022-11-03 02:33:43,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:33:43,571 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1301 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:43,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 5052 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:33:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20516 states. [2022-11-03 02:33:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20516 to 7688. [2022-11-03 02:33:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7687 states have (on average 1.2515935995837129) internal successors, (9621), 7687 states have internal predecessors, (9621), 0 states have call successors, (0), 0 states 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 02:33:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 9621 transitions. [2022-11-03 02:33:43,734 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 9621 transitions. Word has length 310 [2022-11-03 02:33:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:43,734 INFO L495 AbstractCegarLoop]: Abstraction has 7688 states and 9621 transitions. [2022-11-03 02:33:43,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 9621 transitions. [2022-11-03 02:33:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:43,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:43,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:43,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2022-11-03 02:33:43,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:43,963 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash 91444363, now seen corresponding path program 1 times [2022-11-03 02:33:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:43,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717607189] [2022-11-03 02:33:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:43,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:43,966 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:43,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-03 02:33:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:33:44,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:46,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:46,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:46,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717607189] [2022-11-03 02:33:46,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717607189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:46,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:46,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:33:46,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355240424] [2022-11-03 02:33:46,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:46,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:33:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:33:46,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:33:46,478 INFO L87 Difference]: Start difference. First operand 7688 states and 9621 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:47,404 INFO L93 Difference]: Finished difference Result 18419 states and 23487 transitions. [2022-11-03 02:33:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:33:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:47,412 INFO L225 Difference]: With dead ends: 18419 [2022-11-03 02:33:47,412 INFO L226 Difference]: Without dead ends: 16179 [2022-11-03 02:33:47,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:33:47,415 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 1876 mSDsluCounter, 8375 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 9175 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:47,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 9175 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 453 Unchecked, 0.3s Time] [2022-11-03 02:33:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16179 states. [2022-11-03 02:33:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16179 to 7766. [2022-11-03 02:33:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7765 states have (on average 1.25164198325821) internal successors, (9719), 7765 states have internal predecessors, (9719), 0 states have call successors, (0), 0 states 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 02:33:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 9719 transitions. [2022-11-03 02:33:47,579 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 9719 transitions. Word has length 310 [2022-11-03 02:33:47,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:47,579 INFO L495 AbstractCegarLoop]: Abstraction has 7766 states and 9719 transitions. [2022-11-03 02:33:47,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 9719 transitions. [2022-11-03 02:33:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:47,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:47,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:47,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Ended with exit code 0 [2022-11-03 02:33:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:47,784 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:47,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1690593421, now seen corresponding path program 1 times [2022-11-03 02:33:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:47,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554075367] [2022-11-03 02:33:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:47,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:47,788 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:47,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 02:33:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:48,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:33:48,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:48,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:48,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:48,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554075367] [2022-11-03 02:33:48,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554075367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:48,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:33:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519740019] [2022-11-03 02:33:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:33:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:33:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:33:48,926 INFO L87 Difference]: Start difference. First operand 7766 states and 9719 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:49,265 INFO L93 Difference]: Finished difference Result 12762 states and 16249 transitions. [2022-11-03 02:33:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:49,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:49,270 INFO L225 Difference]: With dead ends: 12762 [2022-11-03 02:33:49,270 INFO L226 Difference]: Without dead ends: 8148 [2022-11-03 02:33:49,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:33:49,273 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 116 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:49,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1695 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-03 02:33:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8148 states. [2022-11-03 02:33:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8148 to 8148. [2022-11-03 02:33:49,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8148 states, 8147 states have (on average 1.2522400883760894) internal successors, (10202), 8147 states have internal predecessors, (10202), 0 states have call successors, (0), 0 states 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 02:33:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8148 states to 8148 states and 10202 transitions. [2022-11-03 02:33:49,405 INFO L78 Accepts]: Start accepts. Automaton has 8148 states and 10202 transitions. Word has length 310 [2022-11-03 02:33:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:49,405 INFO L495 AbstractCegarLoop]: Abstraction has 8148 states and 10202 transitions. [2022-11-03 02:33:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8148 states and 10202 transitions. [2022-11-03 02:33:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:49,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:49,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:49,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:49,610 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 286724235, now seen corresponding path program 1 times [2022-11-03 02:33:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:49,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696522038] [2022-11-03 02:33:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:49,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:49,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:49,613 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:49,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-03 02:33:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:50,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:33:50,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:51,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:51,271 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:51,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696522038] [2022-11-03 02:33:51,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696522038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:51,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:51,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:33:51,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116410367] [2022-11-03 02:33:51,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:51,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:33:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:33:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:33:51,273 INFO L87 Difference]: Start difference. First operand 8148 states and 10202 transitions. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:53,589 INFO L93 Difference]: Finished difference Result 25752 states and 33413 transitions. [2022-11-03 02:33:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:33:53,589 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:53,602 INFO L225 Difference]: With dead ends: 25752 [2022-11-03 02:33:53,602 INFO L226 Difference]: Without dead ends: 21594 [2022-11-03 02:33:53,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:33:53,609 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 1547 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 6103 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:33:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2022-11-03 02:33:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 8970. [2022-11-03 02:33:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8969 states have (on average 1.2598951945590366) internal successors, (11300), 8969 states have internal predecessors, (11300), 0 states have call successors, (0), 0 states 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 02:33:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 11300 transitions. [2022-11-03 02:33:53,828 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 11300 transitions. Word has length 310 [2022-11-03 02:33:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 8970 states and 11300 transitions. [2022-11-03 02:33:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 11300 transitions. [2022-11-03 02:33:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:53,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:53,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:53,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:54,035 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2111263603, now seen corresponding path program 1 times [2022-11-03 02:33:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:54,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865767436] [2022-11-03 02:33:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:54,037 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:54,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-03 02:33:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:33:54,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:54,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:54,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865767436] [2022-11-03 02:33:54,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865767436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:54,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:54,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:33:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783340490] [2022-11-03 02:33:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:54,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:33:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:54,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:33:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:54,905 INFO L87 Difference]: Start difference. First operand 8970 states and 11300 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:55,225 INFO L93 Difference]: Finished difference Result 22020 states and 28517 transitions. [2022-11-03 02:33:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:33:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:55,235 INFO L225 Difference]: With dead ends: 22020 [2022-11-03 02:33:55,235 INFO L226 Difference]: Without dead ends: 17130 [2022-11-03 02:33:55,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:33:55,240 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 900 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 2049 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:55,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17130 states. [2022-11-03 02:33:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17130 to 10944. [2022-11-03 02:33:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10944 states, 10943 states have (on average 1.2725029699351182) internal successors, (13925), 10943 states have internal predecessors, (13925), 0 states have call successors, (0), 0 states 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 02:33:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10944 states to 10944 states and 13925 transitions. [2022-11-03 02:33:55,439 INFO L78 Accepts]: Start accepts. Automaton has 10944 states and 13925 transitions. Word has length 310 [2022-11-03 02:33:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:55,439 INFO L495 AbstractCegarLoop]: Abstraction has 10944 states and 13925 transitions. [2022-11-03 02:33:55,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10944 states and 13925 transitions. [2022-11-03 02:33:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:55,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:55,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:55,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2022-11-03 02:33:55,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:55,645 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1757149195, now seen corresponding path program 1 times [2022-11-03 02:33:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:55,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140552604] [2022-11-03 02:33:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:55,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:55,648 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:55,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 02:33:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:56,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 02:33:56,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:58,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:58,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:33:58,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140552604] [2022-11-03 02:33:58,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140552604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:58,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:58,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:33:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417591851] [2022-11-03 02:33:58,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:58,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:33:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:33:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:33:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:33:58,185 INFO L87 Difference]: Start difference. First operand 10944 states and 13925 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:59,124 INFO L93 Difference]: Finished difference Result 23761 states and 30632 transitions. [2022-11-03 02:33:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:33:59,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:33:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:59,136 INFO L225 Difference]: With dead ends: 23761 [2022-11-03 02:33:59,136 INFO L226 Difference]: Without dead ends: 20669 [2022-11-03 02:33:59,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:33:59,141 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1837 mSDsluCounter, 8813 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 9660 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 635 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:59,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 9660 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 635 Unchecked, 0.4s Time] [2022-11-03 02:33:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20669 states. [2022-11-03 02:33:59,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20669 to 11130. [2022-11-03 02:33:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11130 states, 11129 states have (on average 1.2730703567256716) internal successors, (14168), 11129 states have internal predecessors, (14168), 0 states have call successors, (0), 0 states 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 02:33:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11130 states to 11130 states and 14168 transitions. [2022-11-03 02:33:59,318 INFO L78 Accepts]: Start accepts. Automaton has 11130 states and 14168 transitions. Word has length 310 [2022-11-03 02:33:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:59,319 INFO L495 AbstractCegarLoop]: Abstraction has 11130 states and 14168 transitions. [2022-11-03 02:33:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:33:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11130 states and 14168 transitions. [2022-11-03 02:33:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:33:59,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:59,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:59,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-03 02:33:59,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:33:59,526 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:59,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1601168653, now seen corresponding path program 1 times [2022-11-03 02:33:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:33:59,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950012971] [2022-11-03 02:33:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:59,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:33:59,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:33:59,529 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:33:59,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 02:34:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:00,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:34:00,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:01,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:01,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:01,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950012971] [2022-11-03 02:34:01,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950012971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:01,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:01,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:34:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524990307] [2022-11-03 02:34:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:01,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:34:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:34:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:34:01,580 INFO L87 Difference]: Start difference. First operand 11130 states and 14168 transitions. Second operand has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:34:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:01,696 INFO L93 Difference]: Finished difference Result 17640 states and 22781 transitions. [2022-11-03 02:34:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:34:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-11-03 02:34:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:01,703 INFO L225 Difference]: With dead ends: 17640 [2022-11-03 02:34:01,703 INFO L226 Difference]: Without dead ends: 11550 [2022-11-03 02:34:01,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:34:01,707 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 175 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:01,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2764 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 52 Unchecked, 0.0s Time] [2022-11-03 02:34:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11550 states. [2022-11-03 02:34:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11550 to 11414. [2022-11-03 02:34:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11414 states, 11413 states have (on average 1.2753000963813195) internal successors, (14555), 11413 states have internal predecessors, (14555), 0 states have call successors, (0), 0 states 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 02:34:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11414 states to 11414 states and 14555 transitions. [2022-11-03 02:34:01,868 INFO L78 Accepts]: Start accepts. Automaton has 11414 states and 14555 transitions. Word has length 310 [2022-11-03 02:34:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:01,868 INFO L495 AbstractCegarLoop]: Abstraction has 11414 states and 14555 transitions. [2022-11-03 02:34:01,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 02:34:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11414 states and 14555 transitions. [2022-11-03 02:34:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:34:01,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:01,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:01,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:02,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:02,075 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:02,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 318996367, now seen corresponding path program 1 times [2022-11-03 02:34:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:02,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066364594] [2022-11-03 02:34:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:02,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:02,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:02,078 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:02,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2022-11-03 02:34:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:02,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:34:02,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 02:34:08,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:34:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:34:17,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:17,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066364594] [2022-11-03 02:34:17,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066364594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:34:17,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [951829237] [2022-11-03 02:34:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:17,452 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:34:17,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:34:17,454 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:34:17,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (105)] Waiting until timeout for monitored process [2022-11-03 02:34:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:19,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:34:19,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 02:34:25,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:34:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:34:31,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [951829237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:34:31,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330973232] [2022-11-03 02:34:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:31,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:31,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:31,523 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:34:31,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0841902f-26b9-43d6-9778-604d983bbdd6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process