./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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 3653bdd713483cb7b0775416ed15f5f415f5ac5b87f5665dfc11416a1d4f0b7b --- 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 02:39:18,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:39:18,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:39:18,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:39:18,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:39:18,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:39:18,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:39:18,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:39:18,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:39:18,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:39:18,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:39:18,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:39:18,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:39:18,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:39:18,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:39:18,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:39:18,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:39:18,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:39:18,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:39:18,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:39:18,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:39:18,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:39:18,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:39:18,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:39:18,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:39:18,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:39:18,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:39:18,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:39:18,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:39:18,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:39:18,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:39:18,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:39:18,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:39:18,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:39:18,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:39:18,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:39:18,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:39:18,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:39:18,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:39:18,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:39:18,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:39:18,932 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:39:18,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:39:18,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:39:18,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:39:18,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:39:18,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:39:18,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:39:18,994 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:39:18,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:39:18,995 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:39:18,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:39:18,996 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:39:18,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:39:18,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:39:18,997 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:39:18,998 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:39:18,998 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:39:18,998 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:39:18,999 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:39:18,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:39:19,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:39:19,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:39:19,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:39:19,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:39:19,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:39:19,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:39:19,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:39:19,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:39:19,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:39:19,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:39:19,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:39:19,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:39:19,003 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:39:19,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:39:19,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:39:19,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:39:19,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:39:19,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:39:19,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:39:19,005 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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3653bdd713483cb7b0775416ed15f5f415f5ac5b87f5665dfc11416a1d4f0b7b [2022-11-03 02:39:19,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:39:19,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:39:19,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:39:19,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:39:19,377 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:39:19,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c [2022-11-03 02:39:19,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/9a68e3eb0/62130508699641f3b027fac3779dfca8/FLAG32dd41000 [2022-11-03 02:39:20,138 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:39:20,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c [2022-11-03 02:39:20,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/9a68e3eb0/62130508699641f3b027fac3779dfca8/FLAG32dd41000 [2022-11-03 02:39:20,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/9a68e3eb0/62130508699641f3b027fac3779dfca8 [2022-11-03 02:39:20,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:39:20,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:39:20,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:39:20,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:39:20,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:39:20,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:20" (1/1) ... [2022-11-03 02:39:20,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5775877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:20, skipping insertion in model container [2022-11-03 02:39:20,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:20" (1/1) ... [2022-11-03 02:39:20,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:39:20,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:39:20,738 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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c[1107,1120] [2022-11-03 02:39:21,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:39:21,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:39:21,122 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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c[1107,1120] [2022-11-03 02:39:21,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:39:21,314 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:39:21,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21 WrapperNode [2022-11-03 02:39:21,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:39:21,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:39:21,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:39:21,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:39:21,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,614 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1840 [2022-11-03 02:39:21,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:39:21,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:39:21,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:39:21,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:39:21,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:39:21,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:39:21,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:39:21,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:39:21,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (1/1) ... [2022-11-03 02:39:21,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:39:21,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:21,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:39:21,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:39:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:39:21,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:39:22,429 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:39:22,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:39:28,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:39:35,043 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:39:35,043 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:39:35,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:39:35 BoogieIcfgContainer [2022-11-03 02:39:35,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:39:35,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:39:35,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:39:35,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:39:35,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:39:20" (1/3) ... [2022-11-03 02:39:35,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7058c2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:39:35, skipping insertion in model container [2022-11-03 02:39:35,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:21" (2/3) ... [2022-11-03 02:39:35,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7058c2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:39:35, skipping insertion in model container [2022-11-03 02:39:35,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:39:35" (3/3) ... [2022-11-03 02:39:35,059 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal10.c [2022-11-03 02:39:35,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:39:35,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:39:35,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:39:35,185 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;@4b68547f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:39:35,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:39:35,189 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 02:39:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:39:35,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:35,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:39:35,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 23427792, now seen corresponding path program 1 times [2022-11-03 02:39:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840955415] [2022-11-03 02:39:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:40:09,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:40:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:40:40,642 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:40:40,644 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:40:40,646 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:40:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:40:40,653 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:40:40,659 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:40:40,720 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:40:40,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:40:40 BoogieIcfgContainer [2022-11-03 02:40:40,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:40:40,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:40:40,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:40:40,752 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:40:40,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:39:35" (3/4) ... [2022-11-03 02:40:40,757 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:40:40,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:40:40,758 INFO L158 Benchmark]: Toolchain (without parser) took 80415.55ms. Allocated memory was 125.8MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 84.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 187.9MB. Max. memory is 16.1GB. [2022-11-03 02:40:40,759 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory was 103.0MB in the beginning and 102.8MB in the end (delta: 189.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:40:40,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 970.66ms. Allocated memory is still 125.8MB. Free memory was 84.2MB in the beginning and 56.8MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-03 02:40:40,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 298.78ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 56.8MB in the beginning and 132.7MB in the end (delta: -75.9MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2022-11-03 02:40:40,761 INFO L158 Benchmark]: Boogie Preprocessor took 250.32ms. Allocated memory is still 184.5MB. Free memory was 132.7MB in the beginning and 117.7MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 02:40:40,762 INFO L158 Benchmark]: RCFGBuilder took 13179.72ms. Allocated memory was 184.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 117.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 572.0MB. Max. memory is 16.1GB. [2022-11-03 02:40:40,763 INFO L158 Benchmark]: TraceAbstraction took 65702.43ms. Allocated memory was 1.9GB in the beginning and 3.2GB in the end (delta: 1.3GB). Free memory was 1.7GB in the beginning and 3.0GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-03 02:40:40,763 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 3.2GB. Free memory was 3.0GB in the beginning and 3.0GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:40:40,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory was 103.0MB in the beginning and 102.8MB in the end (delta: 189.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 970.66ms. Allocated memory is still 125.8MB. Free memory was 84.2MB in the beginning and 56.8MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 298.78ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 56.8MB in the beginning and 132.7MB in the end (delta: -75.9MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 250.32ms. Allocated memory is still 184.5MB. Free memory was 132.7MB in the beginning and 117.7MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 13179.72ms. Allocated memory was 184.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 117.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 572.0MB. Max. memory is 16.1GB. * TraceAbstraction took 65702.43ms. Allocated memory was 1.9GB in the beginning and 3.2GB in the end (delta: 1.3GB). Free memory was 1.7GB in the beginning and 3.0GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 3.2GB. Free memory was 3.0GB in the beginning and 3.0GB in the end (delta: 1.0MB). 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_301 = 1; [L109] const SORT_17 var_407 = 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_310 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L138] SORT_1 state_326 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L139] SORT_6 state_355 = __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_311_arg_1 = var_31; [L150] state_310 = init_311_arg_1 [L151] SORT_1 init_327_arg_1 = var_27; [L152] state_326 = init_327_arg_1 [L153] SORT_6 init_356_arg_1 = var_37; [L154] state_355 = init_356_arg_1 VAL [init_29_arg_1=0, init_311_arg_1=0, init_327_arg_1=0, init_33_arg_1=0, init_356_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_310=0, state_32=0, state_326=0, state_34=0, state_355=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_301=1, var_31=0, var_37=0, var_407=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_304_arg_0 = var_298; [L914] SORT_17 var_304_arg_1 = var_31; [L915] SORT_1 var_304 = var_304_arg_0 == var_304_arg_1; [L916] SORT_1 var_305_arg_0 = var_304; [L917] SORT_1 var_305 = ~var_305_arg_0; [L918] SORT_17 var_302_arg_0 = var_298; [L919] SORT_17 var_302_arg_1 = var_301; [L920] SORT_1 var_302 = var_302_arg_0 == var_302_arg_1; [L921] SORT_1 var_303_arg_0 = var_302; [L922] SORT_1 var_303 = ~var_303_arg_0; [L923] var_303 = var_303 & mask_SORT_1 [L924] SORT_1 var_306_arg_0 = var_305; [L925] SORT_1 var_306_arg_1 = var_303; [L926] SORT_6 var_306 = ((SORT_6)var_306_arg_0 << 1) | var_306_arg_1; [L927] var_306 = var_306 & mask_SORT_6 [L928] SORT_6 var_307_arg_0 = var_306; [L929] SORT_1 var_307 = var_307_arg_0 == mask_SORT_6; [L930] SORT_17 var_300_arg_0 = var_298; [L931] SORT_17 var_300_arg_1 = var_299; [L932] SORT_1 var_300 = var_300_arg_0 == var_300_arg_1; [L933] SORT_1 var_308_arg_0 = var_307; [L934] SORT_1 var_308_arg_1 = var_300; [L935] SORT_6 var_308 = ((SORT_6)var_308_arg_0 << 1) | var_308_arg_1; [L936] var_308 = var_308 & mask_SORT_6 [L937] SORT_6 var_309_arg_0 = var_308; [L938] SORT_1 var_309 = var_309_arg_0 == mask_SORT_6; [L939] SORT_1 var_312_arg_0 = state_34; [L940] SORT_17 var_312_arg_1 = state_310; [L941] SORT_17 var_312_arg_2 = input_18; [L942] EXPR var_312_arg_0 ? var_312_arg_1 : var_312_arg_2 [L942] SORT_17 var_312 = var_312_arg_0 ? var_312_arg_1 : var_312_arg_2; [L943] SORT_1 var_313_arg_0 = var_41; [L944] SORT_17 var_313_arg_1 = var_312; [L945] SORT_17 var_313_arg_2 = var_31; [L946] EXPR var_313_arg_0 ? var_313_arg_1 : var_313_arg_2 [L946] SORT_17 var_313 = var_313_arg_0 ? var_313_arg_1 : var_313_arg_2; [L947] SORT_1 var_314_arg_0 = var_43; [L948] SORT_17 var_314_arg_1 = var_31; [L949] SORT_17 var_314_arg_2 = var_313; [L950] EXPR var_314_arg_0 ? var_314_arg_1 : var_314_arg_2 [L950] SORT_17 var_314 = var_314_arg_0 ? var_314_arg_1 : var_314_arg_2; [L951] SORT_1 var_315_arg_0 = var_297; [L952] SORT_17 var_315_arg_1 = var_280; [L953] SORT_17 var_315_arg_2 = var_314; [L954] EXPR var_315_arg_0 ? var_315_arg_1 : var_315_arg_2 [L954] SORT_17 var_315 = var_315_arg_0 ? var_315_arg_1 : var_315_arg_2; [L955] var_315 = var_315 & mask_SORT_17 [L956] SORT_17 var_316_arg_0 = var_315; [L957] SORT_17 var_316_arg_1 = var_299; [L958] SORT_1 var_316 = var_316_arg_0 == var_316_arg_1; [L959] SORT_1 var_317_arg_0 = var_307; [L960] SORT_1 var_317_arg_1 = var_316; [L961] SORT_6 var_317 = ((SORT_6)var_317_arg_0 << 1) | var_317_arg_1; [L962] var_317 = var_317 & mask_SORT_6 [L963] SORT_6 var_318_arg_0 = var_317; [L964] SORT_1 var_318 = var_318_arg_0 == mask_SORT_6; [L965] SORT_1 var_319_arg_0 = var_309; [L966] SORT_1 var_319_arg_1 = var_318; [L967] SORT_1 var_319 = var_319_arg_0 == var_319_arg_1; [L968] SORT_1 var_320_arg_0 = var_30; [L969] SORT_1 var_320_arg_1 = var_319; [L970] SORT_1 var_320 = var_320_arg_0 | var_320_arg_1; [L971] SORT_1 var_323_arg_0 = var_320; [L972] SORT_1 var_323 = ~var_323_arg_0; [L973] SORT_1 var_324_arg_0 = var_45; [L974] SORT_1 var_324_arg_1 = var_323; [L975] SORT_1 var_324 = var_324_arg_0 & var_324_arg_1; [L976] var_324 = var_324 & mask_SORT_1 [L977] SORT_1 bad_325_arg_0 = var_324; [L978] CALL __VERIFIER_assert(!(bad_325_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: 65.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 34.4s 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 02:40:40,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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 3653bdd713483cb7b0775416ed15f5f415f5ac5b87f5665dfc11416a1d4f0b7b --- 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 02:40:43,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:40:43,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:40:43,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:40:43,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:40:43,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:40:43,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:40:43,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:40:43,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:40:43,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:40:43,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:40:43,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:40:43,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:40:43,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:40:43,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:40:43,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:40:43,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:40:43,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:40:43,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:40:43,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:40:43,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:40:43,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:40:43,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:40:43,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:40:43,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:40:43,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:40:43,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:40:43,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:40:43,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:40:43,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:40:43,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:40:43,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:40:43,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:40:43,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:40:43,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:40:43,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:40:43,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:40:43,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:40:43,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:40:43,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:40:43,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:40:43,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:40:43,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:40:43,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:40:43,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:40:43,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:40:43,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:40:43,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:40:43,767 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:40:43,767 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:40:43,767 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:40:43,767 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:40:43,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:40:43,769 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:40:43,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:40:43,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:40:43,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:40:43,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:40:43,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:40:43,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:40:43,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:40:43,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:40:43,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:40:43,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:40:43,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:40:43,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:40:43,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:40:43,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:40:43,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:40:43,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:40:43,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:40:43,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:40:43,776 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:40:43,776 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:40:43,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:40:43,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:40:43,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:40:43,778 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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3653bdd713483cb7b0775416ed15f5f415f5ac5b87f5665dfc11416a1d4f0b7b [2022-11-03 02:40:44,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:40:44,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:40:44,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:40:44,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:40:44,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:40:44,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c [2022-11-03 02:40:44,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/bbf0a0ba7/2a91ca9b63294df8bab7c9cc4a7edb26/FLAGdd4071063 [2022-11-03 02:40:45,189 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:40:45,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c [2022-11-03 02:40:45,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/bbf0a0ba7/2a91ca9b63294df8bab7c9cc4a7edb26/FLAGdd4071063 [2022-11-03 02:40:45,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/data/bbf0a0ba7/2a91ca9b63294df8bab7c9cc4a7edb26 [2022-11-03 02:40:45,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:40:45,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:40:45,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:40:45,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:40:45,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:40:45,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:40:45" (1/1) ... [2022-11-03 02:40:45,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777ac487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:45, skipping insertion in model container [2022-11-03 02:40:45,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:40:45" (1/1) ... [2022-11-03 02:40:45,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:40:45,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:40:45,703 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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c[1107,1120] [2022-11-03 02:40:46,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:40:46,118 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:40:46,130 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_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal10.c[1107,1120] [2022-11-03 02:40:46,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:40:46,365 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:40:46,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46 WrapperNode [2022-11-03 02:40:46,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:40:46,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:40:46,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:40:46,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:40:46,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,573 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1840 [2022-11-03 02:40:46,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:40:46,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:40:46,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:40:46,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:40:46,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:40:46,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:40:46,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:40:46,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:40:46,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (1/1) ... [2022-11-03 02:40:46,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:40:46,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:46,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:40:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:40:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:40:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:40:47,365 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:40:47,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:40:49,002 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:40:49,021 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:40:49,022 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:40:49,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:40:49 BoogieIcfgContainer [2022-11-03 02:40:49,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:40:49,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:40:49,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:40:49,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:40:49,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:40:45" (1/3) ... [2022-11-03 02:40:49,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d311f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:40:49, skipping insertion in model container [2022-11-03 02:40:49,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:46" (2/3) ... [2022-11-03 02:40:49,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d311f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:40:49, skipping insertion in model container [2022-11-03 02:40:49,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:40:49" (3/3) ... [2022-11-03 02:40:49,038 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal10.c [2022-11-03 02:40:49,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:40:49,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:40:49,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:40:49,171 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;@681e366b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:40:49,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:40:49,179 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 02:40:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:40:49,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:49,201 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 02:40:49,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:49,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1747459213, now seen corresponding path program 1 times [2022-11-03 02:40:49,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:40:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020025864] [2022-11-03 02:40:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:49,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:40:49,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:40:49,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:40:49,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:40:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:50,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:40:50,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:50,372 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 02:40:50,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:50,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:40:50,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020025864] [2022-11-03 02:40:50,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020025864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:50,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:50,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:40:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414570051] [2022-11-03 02:40:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:50,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:40:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:40:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:40:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:40:50,447 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 02:40:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:50,859 INFO L93 Difference]: Finished difference Result 818 states and 1225 transitions. [2022-11-03 02:40:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:40:50,862 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 02:40:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:50,877 INFO L225 Difference]: With dead ends: 818 [2022-11-03 02:40:50,877 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 02:40:50,881 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 02:40:50,884 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 02:40:50,886 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 02:40:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 02:40:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 207. [2022-11-03 02:40:50,937 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 02:40:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-03 02:40:50,940 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 109 [2022-11-03 02:40:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:50,941 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-03 02:40:50,941 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 02:40:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-03 02:40:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:40:50,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:50,943 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 02:40:50,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:40:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:40:51,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1158214069, now seen corresponding path program 1 times [2022-11-03 02:40:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:40:51,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563505489] [2022-11-03 02:40:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:51,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:40:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:40:51,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:40:51,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:40:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:40:51,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:52,047 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 02:40:52,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:52,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:40:52,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563505489] [2022-11-03 02:40:52,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563505489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:52,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:52,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:40:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033284805] [2022-11-03 02:40:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:52,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:40:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:40:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:40:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:40:52,054 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 02:40:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:52,315 INFO L93 Difference]: Finished difference Result 820 states and 1214 transitions. [2022-11-03 02:40:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:40:52,316 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 02:40:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:52,319 INFO L225 Difference]: With dead ends: 820 [2022-11-03 02:40:52,320 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:40:52,322 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 02:40:52,323 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 02:40:52,324 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 02:40:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:40:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 211. [2022-11-03 02:40:52,341 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 02:40:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2022-11-03 02:40:52,343 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 109 [2022-11-03 02:40:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:52,343 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2022-11-03 02:40:52,344 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 02:40:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2022-11-03 02:40:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:40:52,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:52,346 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 02:40:52,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:40:52,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:40:52,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:52,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:52,567 INFO L85 PathProgramCache]: Analyzing trace with hash 739282697, now seen corresponding path program 1 times [2022-11-03 02:40:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:40:52,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416699875] [2022-11-03 02:40:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:40:52,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:40:52,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:40:52,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:40:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:53,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:40:53,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:53,367 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 02:40:53,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:53,368 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:40:53,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416699875] [2022-11-03 02:40:53,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416699875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:53,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:53,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:40:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14368224] [2022-11-03 02:40:53,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:53,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:40:53,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:40:53,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:40:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:40:53,379 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 02:40:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:53,619 INFO L93 Difference]: Finished difference Result 826 states and 1220 transitions. [2022-11-03 02:40:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:40:53,619 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 02:40:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:53,622 INFO L225 Difference]: With dead ends: 826 [2022-11-03 02:40:53,623 INFO L226 Difference]: Without dead ends: 617 [2022-11-03 02:40:53,624 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 02:40:53,625 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 02:40:53,626 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 02:40:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-03 02:40:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 213. [2022-11-03 02:40:53,639 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 02:40:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2022-11-03 02:40:53,640 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 109 [2022-11-03 02:40:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:53,641 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2022-11-03 02:40:53,641 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 02:40:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2022-11-03 02:40:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:40:53,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:53,644 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 02:40:53,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:40:53,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:40:53,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1167120569, now seen corresponding path program 1 times [2022-11-03 02:40:53,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:40:53,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249696537] [2022-11-03 02:40:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:53,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:40:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:40:53,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:40:53,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:40:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:54,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:40:54,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:54,805 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 02:40:54,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:54,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:40:54,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249696537] [2022-11-03 02:40:54,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249696537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:54,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:54,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:40:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741131180] [2022-11-03 02:40:54,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:54,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:40:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:40:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:40:54,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:40:54,808 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 02:40:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:55,606 INFO L93 Difference]: Finished difference Result 841 states and 1238 transitions. [2022-11-03 02:40:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:40:55,606 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 02:40:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:55,609 INFO L225 Difference]: With dead ends: 841 [2022-11-03 02:40:55,609 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 02:40:55,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:40:55,611 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2388 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 02:40:55,611 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 02:40:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 02:40:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 215. [2022-11-03 02:40:55,627 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 02:40:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2022-11-03 02:40:55,629 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 315 transitions. Word has length 109 [2022-11-03 02:40:55,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:55,629 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 315 transitions. [2022-11-03 02:40:55,630 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 02:40:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 315 transitions. [2022-11-03 02:40:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:40:55,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:55,632 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 02:40:55,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:40:55,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:40:55,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2071115525, now seen corresponding path program 1 times [2022-11-03 02:40:55,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:40:55,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441265280] [2022-11-03 02:40:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:55,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:40:55,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:40:55,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:40:55,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:40:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:56,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:40:56,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:56,676 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 02:40:56,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:56,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:40:56,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441265280] [2022-11-03 02:40:56,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441265280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:56,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:56,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:40:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669518140] [2022-11-03 02:40:56,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:56,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:40:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:40:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:40:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:40:56,679 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 02:40:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:58,198 INFO L93 Difference]: Finished difference Result 1083 states and 1580 transitions. [2022-11-03 02:40:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:40:58,199 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 02:40:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:58,203 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 02:40:58,203 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 02:40:58,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:40:58,205 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:58,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 2545 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:40:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 02:40:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 225. [2022-11-03 02:40:58,217 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 02:40:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2022-11-03 02:40:58,218 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 109 [2022-11-03 02:40:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:58,221 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2022-11-03 02:40:58,221 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 02:40:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2022-11-03 02:40:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:40:58,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:58,232 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 02:40:58,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:40:58,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:40:58,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:58,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2099615815, now seen corresponding path program 1 times [2022-11-03 02:40:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:40:58,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576626830] [2022-11-03 02:40:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:58,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:40:58,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:40:58,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:40:58,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:40:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:59,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:40:59,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:59,609 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 02:40:59,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:40:59,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:40:59,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576626830] [2022-11-03 02:40:59,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576626830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:59,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:59,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:40:59,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786008243] [2022-11-03 02:40:59,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:59,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:40:59,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:40:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:40:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:40:59,613 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 02:41:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:00,207 INFO L93 Difference]: Finished difference Result 868 states and 1265 transitions. [2022-11-03 02:41:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:00,208 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 02:41:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:00,210 INFO L225 Difference]: With dead ends: 868 [2022-11-03 02:41:00,210 INFO L226 Difference]: Without dead ends: 645 [2022-11-03 02:41:00,211 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 02:41:00,212 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 02:41:00,212 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 02:41:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-03 02:41:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 231. [2022-11-03 02:41:00,221 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 02:41:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2022-11-03 02:41:00,222 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 109 [2022-11-03 02:41:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:00,223 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2022-11-03 02:41:00,223 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 02:41:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2022-11-03 02:41:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:00,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:00,225 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 02:41:00,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:00,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash -318288251, now seen corresponding path program 1 times [2022-11-03 02:41:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:00,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103823451] [2022-11-03 02:41:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:00,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:00,446 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:00,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:41:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:01,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:01,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:01,225 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 02:41:01,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:01,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:01,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103823451] [2022-11-03 02:41:01,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103823451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:01,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:01,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563751140] [2022-11-03 02:41:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:01,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:01,230 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 02:41:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:01,511 INFO L93 Difference]: Finished difference Result 962 states and 1385 transitions. [2022-11-03 02:41:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:01,512 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 02:41:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:01,515 INFO L225 Difference]: With dead ends: 962 [2022-11-03 02:41:01,515 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 02:41:01,516 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 02:41:01,516 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 02:41:01,517 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 02:41:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 02:41:01,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 233. [2022-11-03 02:41:01,533 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 02:41:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2022-11-03 02:41:01,534 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 109 [2022-11-03 02:41:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:01,535 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2022-11-03 02:41:01,535 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 02:41:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2022-11-03 02:41:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:01,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:01,540 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 02:41:01,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:01,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2018104259, now seen corresponding path program 1 times [2022-11-03 02:41:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:01,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54256691] [2022-11-03 02:41:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:01,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:01,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:01,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:01,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:41:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:02,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:02,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:02,534 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 02:41:02,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:02,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:02,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54256691] [2022-11-03 02:41:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54256691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:02,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:02,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844415401] [2022-11-03 02:41:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:02,537 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 02:41:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:02,774 INFO L93 Difference]: Finished difference Result 968 states and 1391 transitions. [2022-11-03 02:41:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:02,775 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 02:41:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:02,777 INFO L225 Difference]: With dead ends: 968 [2022-11-03 02:41:02,777 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 02:41:02,778 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 02:41:02,779 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 02:41:02,779 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 02:41:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 02:41:02,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 237. [2022-11-03 02:41:02,788 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 02:41:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2022-11-03 02:41:02,789 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 109 [2022-11-03 02:41:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:02,790 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2022-11-03 02:41:02,790 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 02:41:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2022-11-03 02:41:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:02,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:02,792 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 02:41:02,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:03,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:03,015 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash -710105087, now seen corresponding path program 1 times [2022-11-03 02:41:03,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:03,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121474149] [2022-11-03 02:41:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:03,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:03,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:03,019 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:03,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:41:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:03,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:03,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:03,765 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 02:41:03,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:03,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121474149] [2022-11-03 02:41:03,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121474149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:03,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:03,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569639721] [2022-11-03 02:41:03,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:03,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:03,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:03,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:03,769 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 02:41:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:04,039 INFO L93 Difference]: Finished difference Result 974 states and 1397 transitions. [2022-11-03 02:41:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:04,040 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 02:41:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:04,043 INFO L225 Difference]: With dead ends: 974 [2022-11-03 02:41:04,043 INFO L226 Difference]: Without dead ends: 739 [2022-11-03 02:41:04,044 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 02:41:04,045 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 02:41:04,045 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 02:41:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-03 02:41:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 239. [2022-11-03 02:41:04,056 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 02:41:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 343 transitions. [2022-11-03 02:41:04,057 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 343 transitions. Word has length 109 [2022-11-03 02:41:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:04,058 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 343 transitions. [2022-11-03 02:41:04,058 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 02:41:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 343 transitions. [2022-11-03 02:41:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:04,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:04,060 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 02:41:04,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:04,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:04,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:04,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1852607553, now seen corresponding path program 1 times [2022-11-03 02:41:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:04,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646665108] [2022-11-03 02:41:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:04,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:04,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:04,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:41:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:04,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:05,052 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 02:41:05,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:05,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:05,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646665108] [2022-11-03 02:41:05,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646665108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:05,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:05,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886267268] [2022-11-03 02:41:05,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:05,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:05,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:05,056 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 02:41:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:05,308 INFO L93 Difference]: Finished difference Result 982 states and 1406 transitions. [2022-11-03 02:41:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:05,309 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 02:41:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:05,312 INFO L225 Difference]: With dead ends: 982 [2022-11-03 02:41:05,312 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 02:41:05,313 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 02:41:05,314 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 02:41:05,314 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 02:41:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 02:41:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 245. [2022-11-03 02:41:05,326 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 02:41:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 351 transitions. [2022-11-03 02:41:05,327 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 351 transitions. Word has length 109 [2022-11-03 02:41:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:05,328 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 351 transitions. [2022-11-03 02:41:05,328 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 02:41:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 351 transitions. [2022-11-03 02:41:05,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:05,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:05,330 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 02:41:05,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:05,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:05,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash -965384707, now seen corresponding path program 1 times [2022-11-03 02:41:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:05,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596139504] [2022-11-03 02:41:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:05,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:05,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:05,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:05,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:41:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:06,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:06,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:06,257 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 02:41:06,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:06,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596139504] [2022-11-03 02:41:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596139504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:06,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:06,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209719532] [2022-11-03 02:41:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:06,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:06,261 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 02:41:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:06,601 INFO L93 Difference]: Finished difference Result 990 states and 1415 transitions. [2022-11-03 02:41:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:06,602 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 02:41:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:06,604 INFO L225 Difference]: With dead ends: 990 [2022-11-03 02:41:06,604 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 02:41:06,605 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 02:41:06,606 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 02:41:06,606 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 02:41:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 02:41:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 247. [2022-11-03 02:41:06,618 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 02:41:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2022-11-03 02:41:06,619 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 109 [2022-11-03 02:41:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:06,619 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2022-11-03 02:41:06,620 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 02:41:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2022-11-03 02:41:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:06,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:06,621 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 02:41:06,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:06,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:06,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:06,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash -888483909, now seen corresponding path program 1 times [2022-11-03 02:41:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:06,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471161890] [2022-11-03 02:41:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:06,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:06,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:06,843 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:06,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:41:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:07,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:41:07,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:07,683 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 02:41:07,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:07,684 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:07,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471161890] [2022-11-03 02:41:07,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471161890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:07,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:07,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:07,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488289812] [2022-11-03 02:41:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:07,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:07,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:07,686 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 02:41:08,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:08,208 INFO L93 Difference]: Finished difference Result 994 states and 1418 transitions. [2022-11-03 02:41:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:08,209 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 02:41:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:08,212 INFO L225 Difference]: With dead ends: 994 [2022-11-03 02:41:08,212 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 02:41:08,213 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 02:41:08,214 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2011 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:08,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1249 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:41:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 02:41:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 249. [2022-11-03 02:41:08,239 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 02:41:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 355 transitions. [2022-11-03 02:41:08,240 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 355 transitions. Word has length 109 [2022-11-03 02:41:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:08,240 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 355 transitions. [2022-11-03 02:41:08,241 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 02:41:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 355 transitions. [2022-11-03 02:41:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:08,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:08,242 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 02:41:08,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:08,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:08,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1019973881, now seen corresponding path program 1 times [2022-11-03 02:41:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:08,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728268017] [2022-11-03 02:41:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:08,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:08,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:08,463 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:08,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:41:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:09,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:09,194 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 02:41:09,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:09,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728268017] [2022-11-03 02:41:09,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728268017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:09,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:09,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315368724] [2022-11-03 02:41:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:09,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:09,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:09,197 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 02:41:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:09,500 INFO L93 Difference]: Finished difference Result 998 states and 1421 transitions. [2022-11-03 02:41:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:09,501 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 02:41:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:09,504 INFO L225 Difference]: With dead ends: 998 [2022-11-03 02:41:09,504 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 02:41:09,505 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 02:41:09,505 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2005 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 02:41:09,506 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 02:41:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 02:41:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 251. [2022-11-03 02:41:09,518 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 02:41:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2022-11-03 02:41:09,519 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 109 [2022-11-03 02:41:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:09,520 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2022-11-03 02:41:09,520 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 02:41:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2022-11-03 02:41:09,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:09,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:09,522 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 02:41:09,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-03 02:41:09,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:09,734 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:09,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1973914039, now seen corresponding path program 1 times [2022-11-03 02:41:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:09,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437522633] [2022-11-03 02:41:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:09,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:09,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:41:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:10,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:10,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:10,431 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 02:41:10,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:10,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:10,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437522633] [2022-11-03 02:41:10,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437522633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:10,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:10,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354760957] [2022-11-03 02:41:10,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:10,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:10,434 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 02:41:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:10,769 INFO L93 Difference]: Finished difference Result 1002 states and 1424 transitions. [2022-11-03 02:41:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:10,770 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 02:41:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:10,775 INFO L225 Difference]: With dead ends: 1002 [2022-11-03 02:41:10,775 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 02:41:10,776 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 02:41:10,776 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 02:41:10,776 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 02:41:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 02:41:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 253. [2022-11-03 02:41:10,789 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 02:41:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 359 transitions. [2022-11-03 02:41:10,790 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 359 transitions. Word has length 109 [2022-11-03 02:41:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:10,791 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 359 transitions. [2022-11-03 02:41:10,791 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 02:41:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 359 transitions. [2022-11-03 02:41:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:10,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:10,793 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 02:41:10,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:11,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:11,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:11,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:11,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1241946613, now seen corresponding path program 1 times [2022-11-03 02:41:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:11,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492574202] [2022-11-03 02:41:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:11,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:11,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:11,014 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:11,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:41:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:11,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:41:11,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:11,852 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 02:41:11,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:11,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:11,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492574202] [2022-11-03 02:41:11,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492574202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:11,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:11,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547337236] [2022-11-03 02:41:11,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:11,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:11,854 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 02:41:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:12,373 INFO L93 Difference]: Finished difference Result 1006 states and 1427 transitions. [2022-11-03 02:41:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:12,374 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 02:41:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:12,377 INFO L225 Difference]: With dead ends: 1006 [2022-11-03 02:41:12,377 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 02:41:12,378 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 02:41:12,379 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1993 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 02:41:12,379 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 02:41:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 02:41:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 255. [2022-11-03 02:41:12,392 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 02:41:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 361 transitions. [2022-11-03 02:41:12,393 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 361 transitions. Word has length 109 [2022-11-03 02:41:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:12,394 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 361 transitions. [2022-11-03 02:41:12,394 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 02:41:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 361 transitions. [2022-11-03 02:41:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:12,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:12,396 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 02:41:12,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:12,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:12,610 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1187553715, now seen corresponding path program 1 times [2022-11-03 02:41:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:12,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623905861] [2022-11-03 02:41:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:12,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:12,613 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:12,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:41:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:41:13,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:13,868 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 02:41:13,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:13,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:13,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623905861] [2022-11-03 02:41:13,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623905861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:13,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:13,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:13,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536845611] [2022-11-03 02:41:13,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:13,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:13,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:13,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:13,871 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 02:41:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:14,409 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2022-11-03 02:41:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:14,410 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 02:41:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:14,413 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 02:41:14,413 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 02:41:14,414 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 02:41:14,414 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:14,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1281 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:41:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 02:41:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 257. [2022-11-03 02:41:14,435 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 02:41:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-11-03 02:41:14,436 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 109 [2022-11-03 02:41:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:14,436 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-11-03 02:41:14,436 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 02:41:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-11-03 02:41:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:14,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:14,438 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 02:41:14,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:14,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1866825969, now seen corresponding path program 1 times [2022-11-03 02:41:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:14,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461454972] [2022-11-03 02:41:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:14,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:14,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:14,659 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:14,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:41:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:15,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:41:15,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:15,545 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 02:41:15,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:15,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461454972] [2022-11-03 02:41:15,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461454972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:15,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:15,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161147126] [2022-11-03 02:41:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:15,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:15,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:15,550 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 02:41:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:15,877 INFO L93 Difference]: Finished difference Result 840 states and 1175 transitions. [2022-11-03 02:41:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:15,878 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 02:41:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:15,880 INFO L225 Difference]: With dead ends: 840 [2022-11-03 02:41:15,880 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 02:41:15,881 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 02:41:15,881 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 572 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 02:41:15,882 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 02:41:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 02:41:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 331. [2022-11-03 02:41:15,898 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 02:41:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 454 transitions. [2022-11-03 02:41:15,899 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 454 transitions. Word has length 109 [2022-11-03 02:41:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:15,900 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 454 transitions. [2022-11-03 02:41:15,900 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 02:41:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 454 transitions. [2022-11-03 02:41:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:15,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:15,901 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 02:41:15,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:16,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1665002035, now seen corresponding path program 1 times [2022-11-03 02:41:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:16,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286840183] [2022-11-03 02:41:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:16,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:16,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:16,117 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:16,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:41:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:16,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:16,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:16,875 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 02:41:16,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:16,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:16,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286840183] [2022-11-03 02:41:16,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286840183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:16,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:16,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:16,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553551659] [2022-11-03 02:41:16,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:16,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:16,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:16,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:16,881 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 02:41:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:17,294 INFO L93 Difference]: Finished difference Result 1001 states and 1412 transitions. [2022-11-03 02:41:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:17,295 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 02:41:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:17,298 INFO L225 Difference]: With dead ends: 1001 [2022-11-03 02:41:17,298 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 02:41:17,299 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 02:41:17,299 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1872 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 02:41:17,300 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 02:41:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 02:41:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 335. [2022-11-03 02:41:17,317 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 02:41:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 459 transitions. [2022-11-03 02:41:17,318 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 459 transitions. Word has length 109 [2022-11-03 02:41:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:17,319 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 459 transitions. [2022-11-03 02:41:17,319 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 02:41:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 459 transitions. [2022-11-03 02:41:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:17,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:17,320 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 02:41:17,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:17,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:17,538 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:17,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2098731121, now seen corresponding path program 1 times [2022-11-03 02:41:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:17,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594160959] [2022-11-03 02:41:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:17,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:17,540 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:17,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:41:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:18,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:18,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:18,335 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 02:41:18,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:18,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594160959] [2022-11-03 02:41:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594160959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:18,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:18,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107048616] [2022-11-03 02:41:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:18,338 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 02:41:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:18,926 INFO L93 Difference]: Finished difference Result 1110 states and 1553 transitions. [2022-11-03 02:41:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:18,926 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 02:41:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:18,930 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 02:41:18,930 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 02:41:18,931 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 02:41:18,932 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:18,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1885 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:41:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 02:41:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 337. [2022-11-03 02:41:18,950 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 02:41:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2022-11-03 02:41:18,951 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 109 [2022-11-03 02:41:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:18,952 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2022-11-03 02:41:18,952 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 02:41:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2022-11-03 02:41:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:18,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:18,953 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 02:41:18,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:19,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:19,167 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:19,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:19,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2139405871, now seen corresponding path program 1 times [2022-11-03 02:41:19,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:19,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858398801] [2022-11-03 02:41:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:19,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:19,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:19,169 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:19,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:41:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:19,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:41:19,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:20,195 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 02:41:20,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:20,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:20,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858398801] [2022-11-03 02:41:20,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858398801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:20,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:20,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465719327] [2022-11-03 02:41:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:20,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:20,199 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 02:41:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:20,916 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2022-11-03 02:41:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:20,918 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 02:41:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:20,921 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 02:41:20,921 INFO L226 Difference]: Without dead ends: 853 [2022-11-03 02:41:20,923 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 02:41:20,928 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:20,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1809 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:41:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-03 02:41:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 339. [2022-11-03 02:41:20,950 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 02:41:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 463 transitions. [2022-11-03 02:41:20,951 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 463 transitions. Word has length 109 [2022-11-03 02:41:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:20,951 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 463 transitions. [2022-11-03 02:41:20,952 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 02:41:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 463 transitions. [2022-11-03 02:41:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:20,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:20,953 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 02:41:20,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-03 02:41:21,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:21,173 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1279542419, now seen corresponding path program 1 times [2022-11-03 02:41:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:21,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484334021] [2022-11-03 02:41:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:21,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:21,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:21,176 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:21,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:41:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:21,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:21,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:21,943 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 02:41:21,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:21,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:21,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484334021] [2022-11-03 02:41:21,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484334021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:21,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:21,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346944278] [2022-11-03 02:41:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:21,947 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 02:41:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:22,505 INFO L93 Difference]: Finished difference Result 1118 states and 1559 transitions. [2022-11-03 02:41:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:22,505 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 02:41:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:22,508 INFO L225 Difference]: With dead ends: 1118 [2022-11-03 02:41:22,508 INFO L226 Difference]: Without dead ends: 855 [2022-11-03 02:41:22,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:41:22,510 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:22,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 1891 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:41:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-03 02:41:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 341. [2022-11-03 02:41:22,526 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 02:41:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 465 transitions. [2022-11-03 02:41:22,527 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 465 transitions. Word has length 109 [2022-11-03 02:41:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:22,527 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 465 transitions. [2022-11-03 02:41:22,528 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 02:41:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 465 transitions. [2022-11-03 02:41:22,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:22,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:22,529 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 02:41:22,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-03 02:41:22,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:22,746 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash 258797611, now seen corresponding path program 1 times [2022-11-03 02:41:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916888639] [2022-11-03 02:41:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:22,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:22,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:22,748 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:22,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:41:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:23,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:23,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:23,496 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 02:41:23,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:23,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:23,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916888639] [2022-11-03 02:41:23,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916888639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:23,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:23,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113349157] [2022-11-03 02:41:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:23,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:23,499 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 02:41:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:24,001 INFO L93 Difference]: Finished difference Result 1122 states and 1562 transitions. [2022-11-03 02:41:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:24,003 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 02:41:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:24,006 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 02:41:24,006 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 02:41:24,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:41:24,008 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 02:41:24,008 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 02:41:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 02:41:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 343. [2022-11-03 02:41:24,026 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 02:41:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2022-11-03 02:41:24,027 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 109 [2022-11-03 02:41:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:24,028 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2022-11-03 02:41:24,028 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 02:41:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2022-11-03 02:41:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:24,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:24,029 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 02:41:24,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:24,242 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash -222282647, now seen corresponding path program 1 times [2022-11-03 02:41:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:24,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694130156] [2022-11-03 02:41:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:24,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:24,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:24,245 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:24,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:41:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:24,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:41:24,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:25,226 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 02:41:25,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:25,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:25,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694130156] [2022-11-03 02:41:25,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694130156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:25,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:25,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626415170] [2022-11-03 02:41:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:25,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:25,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:25,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:25,229 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 02:41:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:25,945 INFO L93 Difference]: Finished difference Result 1126 states and 1565 transitions. [2022-11-03 02:41:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:25,945 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 02:41:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:25,947 INFO L225 Difference]: With dead ends: 1126 [2022-11-03 02:41:25,947 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 02:41:25,948 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 02:41:25,948 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:41:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 02:41:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 345. [2022-11-03 02:41:25,965 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 02:41:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2022-11-03 02:41:25,966 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 109 [2022-11-03 02:41:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:25,967 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2022-11-03 02:41:25,967 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 02:41:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2022-11-03 02:41:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:25,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:25,968 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 02:41:25,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:26,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:26,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879399, now seen corresponding path program 1 times [2022-11-03 02:41:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:26,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738946186] [2022-11-03 02:41:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:26,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:26,187 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:26,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:41:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:26,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:26,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:26,996 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 02:41:26,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:26,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:26,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738946186] [2022-11-03 02:41:26,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738946186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:26,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:26,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642190909] [2022-11-03 02:41:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:26,999 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 02:41:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:27,357 INFO L93 Difference]: Finished difference Result 1029 states and 1436 transitions. [2022-11-03 02:41:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:27,358 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 02:41:27,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:27,362 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 02:41:27,362 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 02:41:27,363 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 02:41:27,363 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:27,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1318 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:41:27,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 02:41:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 349. [2022-11-03 02:41:27,379 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 02:41:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 474 transitions. [2022-11-03 02:41:27,380 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 474 transitions. Word has length 109 [2022-11-03 02:41:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:27,381 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 474 transitions. [2022-11-03 02:41:27,381 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 02:41:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 474 transitions. [2022-11-03 02:41:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:27,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:27,382 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 02:41:27,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:27,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:27,595 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash -332508443, now seen corresponding path program 1 times [2022-11-03 02:41:27,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:27,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695013656] [2022-11-03 02:41:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:27,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:27,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:27,598 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:27,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:41:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:28,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:28,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:28,366 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 02:41:28,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:28,366 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:28,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695013656] [2022-11-03 02:41:28,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695013656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:28,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:28,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503510509] [2022-11-03 02:41:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:28,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:28,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:28,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:28,368 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 02:41:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:28,866 INFO L93 Difference]: Finished difference Result 1166 states and 1613 transitions. [2022-11-03 02:41:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:28,867 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 02:41:28,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:28,870 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 02:41:28,870 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 02:41:28,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:41:28,876 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 02:41:28,877 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 02:41:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 02:41:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 02:41:28,893 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 02:41:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 476 transitions. [2022-11-03 02:41:28,894 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 476 transitions. Word has length 109 [2022-11-03 02:41:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:28,895 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 476 transitions. [2022-11-03 02:41:28,895 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 02:41:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 476 transitions. [2022-11-03 02:41:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:28,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:28,896 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 02:41:28,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:29,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:29,113 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:29,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:29,113 INFO L85 PathProgramCache]: Analyzing trace with hash -84361949, now seen corresponding path program 1 times [2022-11-03 02:41:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:29,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869335660] [2022-11-03 02:41:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:29,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:29,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:29,117 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:29,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:41:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:29,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:41:29,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:30,269 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 02:41:30,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:30,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869335660] [2022-11-03 02:41:30,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869335660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:30,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:30,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:30,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512116138] [2022-11-03 02:41:30,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:30,277 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 02:41:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:31,059 INFO L93 Difference]: Finished difference Result 1170 states and 1616 transitions. [2022-11-03 02:41:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:31,059 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 02:41:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:31,063 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 02:41:31,063 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 02:41:31,063 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 02:41:31,064 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 2304 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 02:41:31,064 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 02:41:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 02:41:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 02:41:31,083 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 02:41:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 478 transitions. [2022-11-03 02:41:31,084 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 478 transitions. Word has length 109 [2022-11-03 02:41:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 478 transitions. [2022-11-03 02:41:31,085 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 02:41:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 478 transitions. [2022-11-03 02:41:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:31,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:31,086 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 02:41:31,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:31,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:31,305 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:31,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:31,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1456169247, now seen corresponding path program 1 times [2022-11-03 02:41:31,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:31,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270088229] [2022-11-03 02:41:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:31,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:31,308 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:31,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:41:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:31,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:31,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:32,119 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 02:41:32,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:32,119 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:32,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270088229] [2022-11-03 02:41:32,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270088229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:32,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:32,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317322522] [2022-11-03 02:41:32,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:32,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:32,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:32,121 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 02:41:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:32,453 INFO L93 Difference]: Finished difference Result 1043 states and 1448 transitions. [2022-11-03 02:41:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:32,453 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 02:41:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:32,455 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 02:41:32,455 INFO L226 Difference]: Without dead ends: 766 [2022-11-03 02:41:32,456 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 02:41:32,456 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 02:41:32,456 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 02:41:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-03 02:41:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-03 02:41:32,471 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 02:41:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2022-11-03 02:41:32,472 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 109 [2022-11-03 02:41:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:32,473 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2022-11-03 02:41:32,473 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 02:41:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2022-11-03 02:41:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:32,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:32,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:32,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:32,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:32,691 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:32,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1809438751, now seen corresponding path program 1 times [2022-11-03 02:41:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:32,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387049878] [2022-11-03 02:41:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:32,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:32,695 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:32,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:41:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:33,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:41:33,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:33,529 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 02:41:33,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:33,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:33,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387049878] [2022-11-03 02:41:33,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387049878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:33,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:33,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:33,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893786847] [2022-11-03 02:41:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:33,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:33,531 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 02:41:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:33,903 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2022-11-03 02:41:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:33,903 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 02:41:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:33,905 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 02:41:33,905 INFO L226 Difference]: Without dead ends: 768 [2022-11-03 02:41:33,906 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 02:41:33,906 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1810 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:33,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1328 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:41:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-03 02:41:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 357. [2022-11-03 02:41:33,925 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 02:41:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2022-11-03 02:41:33,926 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 109 [2022-11-03 02:41:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:33,927 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2022-11-03 02:41:33,927 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 02:41:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2022-11-03 02:41:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:33,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:33,929 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 02:41:33,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:34,142 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1415071965, now seen corresponding path program 1 times [2022-11-03 02:41:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:34,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569609005] [2022-11-03 02:41:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:34,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:34,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:34,146 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:34,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:41:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:34,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:41:34,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:35,314 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 02:41:35,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:35,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:35,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569609005] [2022-11-03 02:41:35,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569609005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:35,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:35,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:35,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329851423] [2022-11-03 02:41:35,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:35,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:35,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:35,316 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 02:41:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:36,009 INFO L93 Difference]: Finished difference Result 1194 states and 1640 transitions. [2022-11-03 02:41:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:36,010 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 02:41:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:36,011 INFO L225 Difference]: With dead ends: 1194 [2022-11-03 02:41:36,012 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 02:41:36,012 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 02:41:36,013 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:36,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 1836 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:41:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 02:41:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 359. [2022-11-03 02:41:36,029 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 02:41:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2022-11-03 02:41:36,030 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 109 [2022-11-03 02:41:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:36,031 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2022-11-03 02:41:36,031 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 02:41:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2022-11-03 02:41:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:36,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:36,032 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 02:41:36,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:36,249 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -828911333, now seen corresponding path program 1 times [2022-11-03 02:41:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138193472] [2022-11-03 02:41:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:36,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:36,252 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:36,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:41:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:36,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:41:36,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:37,988 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 02:41:37,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:37,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:37,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138193472] [2022-11-03 02:41:37,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138193472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:37,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:37,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:37,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930755041] [2022-11-03 02:41:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:37,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:37,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:37,991 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 02:41:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:38,808 INFO L93 Difference]: Finished difference Result 1186 states and 1628 transitions. [2022-11-03 02:41:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:38,809 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 02:41:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:38,811 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:41:38,811 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 02:41:38,812 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 02:41:38,812 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 02:41:38,813 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 02:41:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 02:41:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 361. [2022-11-03 02:41:38,846 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 02:41:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2022-11-03 02:41:38,847 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 109 [2022-11-03 02:41:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:38,847 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2022-11-03 02:41:38,848 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 02:41:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2022-11-03 02:41:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:38,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:38,849 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 02:41:38,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 02:41:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:39,062 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash -554151719, now seen corresponding path program 1 times [2022-11-03 02:41:39,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816643216] [2022-11-03 02:41:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:39,065 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:39,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:41:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:39,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:41:39,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:41,954 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 02:41:41,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:41,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:41,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816643216] [2022-11-03 02:41:41,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816643216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:41,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:41,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471257890] [2022-11-03 02:41:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:41,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:41,957 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 02:41:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:42,930 INFO L93 Difference]: Finished difference Result 1162 states and 1595 transitions. [2022-11-03 02:41:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:41:42,930 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 02:41:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:42,932 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 02:41:42,932 INFO L226 Difference]: Without dead ends: 877 [2022-11-03 02:41:42,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:41:42,933 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:42,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1863 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:41:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-03 02:41:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 363. [2022-11-03 02:41:42,948 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 02:41:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 488 transitions. [2022-11-03 02:41:42,949 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 488 transitions. Word has length 109 [2022-11-03 02:41:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:42,950 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 488 transitions. [2022-11-03 02:41:42,950 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 02:41:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 488 transitions. [2022-11-03 02:41:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:42,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:42,951 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 02:41:42,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:43,171 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -531519465, now seen corresponding path program 1 times [2022-11-03 02:41:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:43,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796092278] [2022-11-03 02:41:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:43,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:43,173 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:43,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:41:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:43,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:41:43,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:44,136 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 02:41:44,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:44,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796092278] [2022-11-03 02:41:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796092278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:44,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:44,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040691105] [2022-11-03 02:41:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:44,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:44,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:44,139 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 02:41:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:44,465 INFO L93 Difference]: Finished difference Result 968 states and 1310 transitions. [2022-11-03 02:41:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:44,465 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 02:41:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:44,467 INFO L225 Difference]: With dead ends: 968 [2022-11-03 02:41:44,467 INFO L226 Difference]: Without dead ends: 681 [2022-11-03 02:41:44,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:41:44,468 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 525 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 02:41:44,469 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 02:41:44,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-03 02:41:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 395. [2022-11-03 02:41:44,487 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 02:41:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2022-11-03 02:41:44,489 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 109 [2022-11-03 02:41:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:44,489 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2022-11-03 02:41:44,490 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 02:41:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2022-11-03 02:41:44,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:44,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:44,491 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 02:41:44,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 02:41:44,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:44,706 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash -22046375, now seen corresponding path program 1 times [2022-11-03 02:41:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:44,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9367424] [2022-11-03 02:41:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:44,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:44,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:44,709 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:44,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:41:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:45,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:41:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:45,555 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 02:41:45,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:45,555 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:45,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9367424] [2022-11-03 02:41:45,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9367424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:45,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:45,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187232503] [2022-11-03 02:41:45,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:45,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:45,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:45,558 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 02:41:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:46,025 INFO L93 Difference]: Finished difference Result 1316 states and 1794 transitions. [2022-11-03 02:41:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:46,026 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 02:41:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:46,028 INFO L225 Difference]: With dead ends: 1316 [2022-11-03 02:41:46,029 INFO L226 Difference]: Without dead ends: 1029 [2022-11-03 02:41:46,029 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 02:41:46,030 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:46,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1605 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:41:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-03 02:41:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 397. [2022-11-03 02:41:46,048 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 02:41:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 523 transitions. [2022-11-03 02:41:46,049 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 523 transitions. Word has length 109 [2022-11-03 02:41:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:46,050 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 523 transitions. [2022-11-03 02:41:46,050 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 02:41:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 523 transitions. [2022-11-03 02:41:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:46,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:46,051 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 02:41:46,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 02:41:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:46,254 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -156059881, now seen corresponding path program 1 times [2022-11-03 02:41:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112188841] [2022-11-03 02:41:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:46,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:46,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:46,257 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:46,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:41:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:46,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 02:41:46,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:47,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:47,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:47,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112188841] [2022-11-03 02:41:47,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112188841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:47,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:47,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:41:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598250248] [2022-11-03 02:41:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:47,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:41:47,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:41:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:41:47,865 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 02:41:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:48,366 INFO L93 Difference]: Finished difference Result 1320 states and 1797 transitions. [2022-11-03 02:41:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:48,367 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 02:41:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:48,369 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 02:41:48,370 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 02:41:48,370 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 02:41:48,371 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1886 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 02:41:48,371 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 02:41:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 02:41:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 399. [2022-11-03 02:41:48,390 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 02:41:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 525 transitions. [2022-11-03 02:41:48,391 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 525 transitions. Word has length 109 [2022-11-03 02:41:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:48,392 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 525 transitions. [2022-11-03 02:41:48,392 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 02:41:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 525 transitions. [2022-11-03 02:41:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:48,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:48,393 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 02:41:48,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 02:41:48,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:48,598 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:48,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:48,599 INFO L85 PathProgramCache]: Analyzing trace with hash 62794837, now seen corresponding path program 1 times [2022-11-03 02:41:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:48,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996274491] [2022-11-03 02:41:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:48,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:48,601 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:48,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:41:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:49,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:49,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:49,307 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 02:41:49,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:49,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:49,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996274491] [2022-11-03 02:41:49,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996274491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:49,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:49,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745468907] [2022-11-03 02:41:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:49,309 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 02:41:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:49,398 INFO L93 Difference]: Finished difference Result 1167 states and 1597 transitions. [2022-11-03 02:41:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:49,399 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 02:41:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:49,402 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:41:49,402 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:41:49,403 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 02:41:49,404 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 02:41:49,404 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 02:41:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:41:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 471. [2022-11-03 02:41:49,419 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 02:41:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-03 02:41:49,420 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 109 [2022-11-03 02:41:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:49,421 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-03 02:41:49,421 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 02:41:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-03 02:41:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:49,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:49,422 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 02:41:49,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:49,640 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -754853613, now seen corresponding path program 1 times [2022-11-03 02:41:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:49,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914796720] [2022-11-03 02:41:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:49,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:49,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:49,642 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:49,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:41:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:50,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:50,241 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 02:41:50,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:50,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:50,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914796720] [2022-11-03 02:41:50,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914796720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:50,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:50,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368590254] [2022-11-03 02:41:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:50,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:50,243 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 02:41:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:50,320 INFO L93 Difference]: Finished difference Result 1167 states and 1596 transitions. [2022-11-03 02:41:50,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:50,322 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 02:41:50,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:50,323 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:41:50,323 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:41:50,324 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 02:41:50,324 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 678 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 02:41:50,325 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 02:41:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:41:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 473. [2022-11-03 02:41:50,341 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 02:41:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-03 02:41:50,342 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 109 [2022-11-03 02:41:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:50,343 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-03 02:41:50,343 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 02:41:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-03 02:41:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:50,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:50,343 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 02:41:50,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 02:41:50,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:50,544 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1545968977, now seen corresponding path program 1 times [2022-11-03 02:41:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:50,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829152939] [2022-11-03 02:41:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:50,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:50,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:50,547 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:50,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:41:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:51,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:51,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:51,195 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 02:41:51,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:51,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829152939] [2022-11-03 02:41:51,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829152939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:51,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:51,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218025393] [2022-11-03 02:41:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:51,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:51,197 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 02:41:51,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:51,279 INFO L93 Difference]: Finished difference Result 1167 states and 1595 transitions. [2022-11-03 02:41:51,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:51,280 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 02:41:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:51,281 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:41:51,282 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:41:51,282 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 02:41:51,283 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 02:41:51,283 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 02:41:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:41:51,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 481. [2022-11-03 02:41:51,303 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 02:41:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 643 transitions. [2022-11-03 02:41:51,304 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 643 transitions. Word has length 109 [2022-11-03 02:41:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:51,305 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 643 transitions. [2022-11-03 02:41:51,305 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 02:41:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 643 transitions. [2022-11-03 02:41:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:51,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:51,306 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 02:41:51,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:51,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:51,519 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:51,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1152941967, now seen corresponding path program 1 times [2022-11-03 02:41:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:51,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858036979] [2022-11-03 02:41:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:51,522 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:51,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:41:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:52,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:41:52,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:52,239 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 02:41:52,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:52,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:52,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858036979] [2022-11-03 02:41:52,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858036979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:52,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:52,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:52,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911585532] [2022-11-03 02:41:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:52,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:52,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:52,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:52,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:52,242 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 02:41:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:52,628 INFO L93 Difference]: Finished difference Result 1348 states and 1829 transitions. [2022-11-03 02:41:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:52,628 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 02:41:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:52,630 INFO L225 Difference]: With dead ends: 1348 [2022-11-03 02:41:52,630 INFO L226 Difference]: Without dead ends: 1057 [2022-11-03 02:41:52,631 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 02:41:52,632 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 02:41:52,632 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 02:41:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-03 02:41:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 489. [2022-11-03 02:41:52,646 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 02:41:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-03 02:41:52,647 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 109 [2022-11-03 02:41:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:52,647 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-03 02:41:52,647 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 02:41:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-03 02:41:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 02:41:52,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:52,648 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 02:41:52,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-03 02:41:52,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:52,849 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1210200269, now seen corresponding path program 1 times [2022-11-03 02:41:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:52,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363796828] [2022-11-03 02:41:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:52,851 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:52,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:41:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:41:53,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:53,812 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 02:41:53,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:53,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:53,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363796828] [2022-11-03 02:41:53,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363796828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:53,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:53,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:41:53,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655644817] [2022-11-03 02:41:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:53,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:41:53,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:53,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:41:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:41:53,816 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 02:41:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:54,259 INFO L93 Difference]: Finished difference Result 787 states and 1062 transitions. [2022-11-03 02:41:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:41:54,260 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 02:41:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:54,261 INFO L225 Difference]: With dead ends: 787 [2022-11-03 02:41:54,261 INFO L226 Difference]: Without dead ends: 785 [2022-11-03 02:41:54,262 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 02:41:54,262 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:54,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1301 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:41:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-03 02:41:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 497. [2022-11-03 02:41:54,284 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 02:41:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2022-11-03 02:41:54,285 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 109 [2022-11-03 02:41:54,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:54,286 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2022-11-03 02:41:54,286 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 02:41:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2022-11-03 02:41:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:41:54,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:54,290 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 02:41:54,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 02:41:54,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:54,499 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash -303024265, now seen corresponding path program 1 times [2022-11-03 02:41:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:54,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116016947] [2022-11-03 02:41:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:54,502 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:54,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:41:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:55,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:55,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:55,648 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 02:41:55,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:55,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:55,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116016947] [2022-11-03 02:41:55,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116016947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:55,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:55,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694295731] [2022-11-03 02:41:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:55,651 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 02:41:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:55,748 INFO L93 Difference]: Finished difference Result 1173 states and 1602 transitions. [2022-11-03 02:41:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:55,749 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 02:41:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:55,752 INFO L225 Difference]: With dead ends: 1173 [2022-11-03 02:41:55,752 INFO L226 Difference]: Without dead ends: 882 [2022-11-03 02:41:55,753 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 02:41:55,753 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 02:41:55,754 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 02:41:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-03 02:41:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 499. [2022-11-03 02:41:55,775 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 02:41:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 666 transitions. [2022-11-03 02:41:55,776 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 666 transitions. Word has length 310 [2022-11-03 02:41:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:55,777 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 666 transitions. [2022-11-03 02:41:55,777 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 02:41:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 666 transitions. [2022-11-03 02:41:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:41:55,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:55,780 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 02:41:55,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 02:41:56,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:56,003 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2024138105, now seen corresponding path program 1 times [2022-11-03 02:41:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:56,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851065936] [2022-11-03 02:41:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:56,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:56,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:56,007 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:56,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:41:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:56,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:41:56,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:57,159 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 02:41:57,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:57,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:57,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851065936] [2022-11-03 02:41:57,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851065936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:57,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:57,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:57,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587773172] [2022-11-03 02:41:57,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:57,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:57,162 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 02:41:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:57,504 INFO L93 Difference]: Finished difference Result 1356 states and 1838 transitions. [2022-11-03 02:41:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:57,505 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 02:41:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:57,507 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 02:41:57,507 INFO L226 Difference]: Without dead ends: 1065 [2022-11-03 02:41:57,508 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 02:41:57,508 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 02:41:57,508 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 02:41:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-03 02:41:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 509. [2022-11-03 02:41:57,528 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 02:41:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 678 transitions. [2022-11-03 02:41:57,530 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 678 transitions. Word has length 310 [2022-11-03 02:41:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:57,530 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 678 transitions. [2022-11-03 02:41:57,530 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 02:41:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 678 transitions. [2022-11-03 02:41:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:41:57,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:57,533 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 02:41:57,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-03 02:41:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:57,747 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 299295867, now seen corresponding path program 1 times [2022-11-03 02:41:57,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:57,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515428168] [2022-11-03 02:41:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:57,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:57,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:57,750 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:57,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:41:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:58,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:58,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:58,814 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 02:41:58,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:58,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:58,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515428168] [2022-11-03 02:41:58,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515428168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:58,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:58,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14024884] [2022-11-03 02:41:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:58,817 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 02:41:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:58,908 INFO L93 Difference]: Finished difference Result 1183 states and 1613 transitions. [2022-11-03 02:41:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:58,908 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 02:41:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:58,910 INFO L225 Difference]: With dead ends: 1183 [2022-11-03 02:41:58,910 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 02:41:58,910 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 02:41:58,911 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 02:41:58,911 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 02:41:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 02:41:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 515. [2022-11-03 02:41:58,925 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 02:41:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 686 transitions. [2022-11-03 02:41:58,927 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 686 transitions. Word has length 310 [2022-11-03 02:41:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:58,927 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 686 transitions. [2022-11-03 02:41:58,927 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 02:41:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 686 transitions. [2022-11-03 02:41:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:41:58,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:58,931 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 02:41:58,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-03 02:41:59,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:59,147 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1981826051, now seen corresponding path program 1 times [2022-11-03 02:41:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:59,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072137499] [2022-11-03 02:41:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:59,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:59,151 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:59,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:42:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:00,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:00,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:00,449 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 02:42:00,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:00,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:00,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072137499] [2022-11-03 02:42:00,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072137499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:00,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:00,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636366892] [2022-11-03 02:42:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:00,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:00,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:00,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:00,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:00,455 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 02:42:00,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:00,712 INFO L93 Difference]: Finished difference Result 848 states and 1139 transitions. [2022-11-03 02:42:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:00,713 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 02:42:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:00,714 INFO L225 Difference]: With dead ends: 848 [2022-11-03 02:42:00,714 INFO L226 Difference]: Without dead ends: 557 [2022-11-03 02:42:00,714 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 02:42:00,715 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:00,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1426 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-03 02:42:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-03 02:42:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-03 02:42:00,728 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 02:42:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 739 transitions. [2022-11-03 02:42:00,729 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 739 transitions. Word has length 310 [2022-11-03 02:42:00,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:00,730 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 739 transitions. [2022-11-03 02:42:00,730 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 02:42:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 739 transitions. [2022-11-03 02:42:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:42:00,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:00,733 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 02:42:00,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-03 02:42:00,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:00,946 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash 98757627, now seen corresponding path program 1 times [2022-11-03 02:42:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215885908] [2022-11-03 02:42:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:00,950 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:00,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:42:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:01,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:01,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:02,212 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 02:42:02,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:02,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:02,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215885908] [2022-11-03 02:42:02,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215885908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:02,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:02,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:02,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264429531] [2022-11-03 02:42:02,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:02,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:02,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:02,215 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 02:42:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:02,719 INFO L93 Difference]: Finished difference Result 1408 states and 1901 transitions. [2022-11-03 02:42:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:42:02,720 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 02:42:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:02,722 INFO L225 Difference]: With dead ends: 1408 [2022-11-03 02:42:02,722 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 02:42:02,723 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 02:42:02,723 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:02,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2654 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2022-11-03 02:42:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 02:42:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 567. [2022-11-03 02:42:02,744 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 02:42:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2022-11-03 02:42:02,745 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 310 [2022-11-03 02:42:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:02,746 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2022-11-03 02:42:02,746 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 02:42:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2022-11-03 02:42:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:42:02,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:02,749 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 02:42:02,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:02,975 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:02,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1686645635, now seen corresponding path program 1 times [2022-11-03 02:42:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:02,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275473462] [2022-11-03 02:42:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:02,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:02,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:02,979 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:02,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:42:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:03,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 02:42:03,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:06,268 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 02:42:06,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:06,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:06,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275473462] [2022-11-03 02:42:06,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275473462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:06,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:06,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998711399] [2022-11-03 02:42:06,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:06,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:06,271 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 02:42:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:07,160 INFO L93 Difference]: Finished difference Result 1600 states and 2154 transitions. [2022-11-03 02:42:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:42:07,161 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 02:42:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:07,163 INFO L225 Difference]: With dead ends: 1600 [2022-11-03 02:42:07,163 INFO L226 Difference]: Without dead ends: 1309 [2022-11-03 02:42:07,164 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 02:42:07,164 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2336 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 02:42:07,165 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 02:42:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-03 02:42:07,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 721. [2022-11-03 02:42:07,182 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 02:42:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 951 transitions. [2022-11-03 02:42:07,184 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 951 transitions. Word has length 310 [2022-11-03 02:42:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 951 transitions. [2022-11-03 02:42:07,185 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 02:42:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 951 transitions. [2022-11-03 02:42:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:42:07,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:07,188 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 02:42:07,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:07,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:07,393 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:07,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1563363969, now seen corresponding path program 1 times [2022-11-03 02:42:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:07,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491196004] [2022-11-03 02:42:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:07,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:07,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:07,397 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:07,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:42:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:08,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 208 conjunts are in the unsatisfiable core [2022-11-03 02:42:08,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:25,571 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 02:42:25,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:25,571 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:25,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491196004] [2022-11-03 02:42:25,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491196004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:25,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:25,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:42:25,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805590101] [2022-11-03 02:42:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:25,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:42:25,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:42:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:42:25,573 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 02:42:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:28,308 INFO L93 Difference]: Finished difference Result 2358 states and 3158 transitions. [2022-11-03 02:42:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:42:28,311 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 02:42:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:28,316 INFO L225 Difference]: With dead ends: 2358 [2022-11-03 02:42:28,317 INFO L226 Difference]: Without dead ends: 2021 [2022-11-03 02:42:28,318 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 02:42:28,319 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2902 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:28,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 5437 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 198 Unchecked, 0.8s Time] [2022-11-03 02:42:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-11-03 02:42:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 897. [2022-11-03 02:42:28,362 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 02:42:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1160 transitions. [2022-11-03 02:42:28,365 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1160 transitions. Word has length 310 [2022-11-03 02:42:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:28,366 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1160 transitions. [2022-11-03 02:42:28,366 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 02:42:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1160 transitions. [2022-11-03 02:42:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:42:28,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:28,370 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 02:42:28,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:28,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:28,595 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1571362943, now seen corresponding path program 1 times [2022-11-03 02:42:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:28,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727430138] [2022-11-03 02:42:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:28,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:28,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:28,598 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:28,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:42:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:29,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 221 conjunts are in the unsatisfiable core [2022-11-03 02:42:29,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:48,209 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 02:42:48,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:48,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727430138] [2022-11-03 02:42:48,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727430138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:48,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:48,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:42:48,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658417932] [2022-11-03 02:42:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:48,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:42:48,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:42:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:42:48,211 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 02:42:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:51,086 INFO L93 Difference]: Finished difference Result 2582 states and 3485 transitions. [2022-11-03 02:42:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:42:51,087 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 02:42:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:51,090 INFO L225 Difference]: With dead ends: 2582 [2022-11-03 02:42:51,091 INFO L226 Difference]: Without dead ends: 2245 [2022-11-03 02:42:51,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:42:51,092 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 3227 mSDsluCounter, 5515 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3227 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:51,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3227 Valid, 5963 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 364 Invalid, 0 Unknown, 146 Unchecked, 1.1s Time] [2022-11-03 02:42:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2022-11-03 02:42:51,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 899. [2022-11-03 02:42:51,125 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 02:42:51,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1162 transitions. [2022-11-03 02:42:51,127 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1162 transitions. Word has length 310 [2022-11-03 02:42:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:51,127 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1162 transitions. [2022-11-03 02:42:51,128 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 02:42:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1162 transitions. [2022-11-03 02:42:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:42:51,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:51,131 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 02:42:51,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-03 02:42:51,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:51,355 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash -413830653, now seen corresponding path program 1 times [2022-11-03 02:42:51,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:51,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413966027] [2022-11-03 02:42:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:51,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:51,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:51,359 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:51,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:42:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:52,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:42:52,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:56,215 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 02:42:56,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:56,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413966027] [2022-11-03 02:42:56,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413966027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:56,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:56,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 02:42:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489666361] [2022-11-03 02:42:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:56,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:42:56,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:56,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:42:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:42:56,219 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 02:42:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:56,755 INFO L93 Difference]: Finished difference Result 2081 states and 2739 transitions. [2022-11-03 02:42:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:42:56,756 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 02:42:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:56,759 INFO L225 Difference]: With dead ends: 2081 [2022-11-03 02:42:56,759 INFO L226 Difference]: Without dead ends: 1744 [2022-11-03 02:42:56,760 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 02:42:56,761 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 903 mSDsluCounter, 7725 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 8131 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1006 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:56,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 8131 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 1006 Unchecked, 0.4s Time] [2022-11-03 02:42:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-03 02:42:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1209. [2022-11-03 02:42:56,795 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 02:42:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1549 transitions. [2022-11-03 02:42:56,798 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1549 transitions. Word has length 310 [2022-11-03 02:42:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:56,798 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1549 transitions. [2022-11-03 02:42:56,798 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 02:42:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1549 transitions. [2022-11-03 02:42:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:42:56,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:56,802 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 02:42:56,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:57,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:57,019 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1229877883, now seen corresponding path program 1 times [2022-11-03 02:42:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:57,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179903530] [2022-11-03 02:42:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:57,022 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:57,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:42:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:57,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 231 conjunts are in the unsatisfiable core [2022-11-03 02:42:57,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:23,497 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 02:43:23,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:43:23,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:43:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179903530] [2022-11-03 02:43:23,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179903530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:23,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:23,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:43:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826483133] [2022-11-03 02:43:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:43:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:43:23,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:43:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:43:23,501 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 02:43:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:23,963 INFO L93 Difference]: Finished difference Result 2144 states and 2850 transitions. [2022-11-03 02:43:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:43:23,965 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 02:43:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:23,967 INFO L225 Difference]: With dead ends: 2144 [2022-11-03 02:43:23,967 INFO L226 Difference]: Without dead ends: 1807 [2022-11-03 02:43:23,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:43:23,969 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 983 mSDsluCounter, 7683 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 7991 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1281 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:23,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 7991 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 1281 Unchecked, 0.2s Time] [2022-11-03 02:43:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2022-11-03 02:43:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1221. [2022-11-03 02:43:23,997 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 02:43:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1565 transitions. [2022-11-03 02:43:24,000 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1565 transitions. Word has length 310 [2022-11-03 02:43:24,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:24,000 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1565 transitions. [2022-11-03 02:43:24,001 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 02:43:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1565 transitions. [2022-11-03 02:43:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:43:24,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:24,005 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 02:43:24,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:24,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:43:24,219 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 369271175, now seen corresponding path program 1 times [2022-11-03 02:43:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:43:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830832116] [2022-11-03 02:43:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:24,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:43:24,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:43:24,224 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:43:24,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:43:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:25,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:43:25,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:25,324 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 02:43:25,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:43:25,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:43:25,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830832116] [2022-11-03 02:43:25,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830832116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:25,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:25,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:43:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223612489] [2022-11-03 02:43:25,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:25,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:43:25,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:43:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:43:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:43:25,327 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 02:43:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:25,554 INFO L93 Difference]: Finished difference Result 1589 states and 2075 transitions. [2022-11-03 02:43:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:43:25,554 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 02:43:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:25,557 INFO L225 Difference]: With dead ends: 1589 [2022-11-03 02:43:25,557 INFO L226 Difference]: Without dead ends: 1252 [2022-11-03 02:43:25,558 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 02:43:25,558 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 02:43:25,559 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 02:43:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2022-11-03 02:43:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1221. [2022-11-03 02:43:25,595 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 02:43:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1564 transitions. [2022-11-03 02:43:25,598 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1564 transitions. Word has length 310 [2022-11-03 02:43:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:25,598 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1564 transitions. [2022-11-03 02:43:25,599 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 02:43:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1564 transitions. [2022-11-03 02:43:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:43:25,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:25,603 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 02:43:25,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:25,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:43:25,827 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 459331465, now seen corresponding path program 1 times [2022-11-03 02:43:25,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:43:25,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940972416] [2022-11-03 02:43:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:25,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:43:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:43:25,831 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:43:25,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:43:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:26,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:43:26,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:26,906 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 02:43:26,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:43:26,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:43:26,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940972416] [2022-11-03 02:43:26,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940972416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:26,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:26,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:43:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525969564] [2022-11-03 02:43:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:26,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:43:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:43:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:43:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:43:26,909 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 02:43:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:27,144 INFO L93 Difference]: Finished difference Result 1593 states and 2078 transitions. [2022-11-03 02:43:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:43:27,145 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 02:43:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:27,147 INFO L225 Difference]: With dead ends: 1593 [2022-11-03 02:43:27,147 INFO L226 Difference]: Without dead ends: 1256 [2022-11-03 02:43:27,148 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 02:43:27,149 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 02:43:27,149 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 02:43:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-03 02:43:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1221. [2022-11-03 02:43:27,176 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 02:43:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1563 transitions. [2022-11-03 02:43:27,178 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1563 transitions. Word has length 310 [2022-11-03 02:43:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:27,179 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1563 transitions. [2022-11-03 02:43:27,179 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 02:43:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1563 transitions. [2022-11-03 02:43:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:43:27,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:27,183 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 02:43:27,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:43:27,402 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1463918965, now seen corresponding path program 1 times [2022-11-03 02:43:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:43:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821836887] [2022-11-03 02:43:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:27,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:43:27,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:43:27,407 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:43:27,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:43:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:43:28,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:28,867 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 02:43:28,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:43:28,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:43:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821836887] [2022-11-03 02:43:28,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821836887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:28,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:28,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:43:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897397048] [2022-11-03 02:43:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:28,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:43:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:43:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:43:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:43:28,872 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 02:43:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:29,294 INFO L93 Difference]: Finished difference Result 2217 states and 2928 transitions. [2022-11-03 02:43:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:43:29,295 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 02:43:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:29,298 INFO L225 Difference]: With dead ends: 2217 [2022-11-03 02:43:29,299 INFO L226 Difference]: Without dead ends: 1880 [2022-11-03 02:43:29,301 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 02:43:29,303 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 860 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:43:29,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2693 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 50 Unchecked, 0.4s Time] [2022-11-03 02:43:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-11-03 02:43:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1263. [2022-11-03 02:43:29,335 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 02:43:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1622 transitions. [2022-11-03 02:43:29,338 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1622 transitions. Word has length 310 [2022-11-03 02:43:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:29,338 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1622 transitions. [2022-11-03 02:43:29,339 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 02:43:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1622 transitions. [2022-11-03 02:43:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:43:29,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:29,343 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 02:43:29,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:43:29,562 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash -796537075, now seen corresponding path program 1 times [2022-11-03 02:43:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:43:29,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635070105] [2022-11-03 02:43:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:29,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:43:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:43:29,567 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:43:29,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:43:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:30,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:43:30,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:30,682 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 02:43:30,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:43:30,682 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:43:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635070105] [2022-11-03 02:43:30,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635070105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:30,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:30,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:43:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374064243] [2022-11-03 02:43:30,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:43:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:43:30,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:43:30,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:43:30,684 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 02:43:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:30,932 INFO L93 Difference]: Finished difference Result 1621 states and 2114 transitions. [2022-11-03 02:43:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:43:30,932 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 02:43:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:30,935 INFO L225 Difference]: With dead ends: 1621 [2022-11-03 02:43:30,935 INFO L226 Difference]: Without dead ends: 1284 [2022-11-03 02:43:30,936 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 02:43:30,936 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 02:43:30,937 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 02:43:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-03 02:43:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1263. [2022-11-03 02:43:30,965 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 02:43:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1621 transitions. [2022-11-03 02:43:30,968 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1621 transitions. Word has length 310 [2022-11-03 02:43:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:30,968 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1621 transitions. [2022-11-03 02:43:30,969 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 02:43:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1621 transitions. [2022-11-03 02:43:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:43:30,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:30,973 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 02:43:31,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:31,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:43:31,199 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2093238543, now seen corresponding path program 1 times [2022-11-03 02:43:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:43:31,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261818348] [2022-11-03 02:43:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:43:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:43:31,202 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:43:31,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:43:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:32,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:43:32,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:43:32,746 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 02:43:32,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:43:32,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:43:32,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261818348] [2022-11-03 02:43:32,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261818348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:43:32,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:43:32,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:43:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256563160] [2022-11-03 02:43:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:43:32,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:43:32,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:43:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:43:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:43:32,749 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 02:43:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:43:33,326 INFO L93 Difference]: Finished difference Result 1964 states and 2581 transitions. [2022-11-03 02:43:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:43:33,326 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 02:43:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:43:33,329 INFO L225 Difference]: With dead ends: 1964 [2022-11-03 02:43:33,330 INFO L226 Difference]: Without dead ends: 1627 [2022-11-03 02:43:33,330 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 02:43:33,331 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 02:43:33,331 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 02:43:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-03 02:43:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1265. [2022-11-03 02:43:33,361 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 02:43:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1623 transitions. [2022-11-03 02:43:33,362 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1623 transitions. Word has length 310 [2022-11-03 02:43:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:43:33,362 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1623 transitions. [2022-11-03 02:43:33,363 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 02:43:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1623 transitions. [2022-11-03 02:43:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:43:33,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:43:33,366 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 02:43:33,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 02:43:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:43:33,591 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:43:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:43:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -270603119, now seen corresponding path program 1 times [2022-11-03 02:43:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:43:33,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25577236] [2022-11-03 02:43:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:43:33,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:43:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:43:33,595 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:43:33,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:43:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:43:34,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 231 conjunts are in the unsatisfiable core [2022-11-03 02:43:34,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:00,844 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 02:44:00,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:00,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25577236] [2022-11-03 02:44:00,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25577236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:00,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:00,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:44:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617063373] [2022-11-03 02:44:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:44:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:44:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:44:00,847 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 02:44:01,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:01,337 INFO L93 Difference]: Finished difference Result 2154 states and 2838 transitions. [2022-11-03 02:44:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:44:01,339 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 02:44:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:01,342 INFO L225 Difference]: With dead ends: 2154 [2022-11-03 02:44:01,343 INFO L226 Difference]: Without dead ends: 1815 [2022-11-03 02:44:01,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:44:01,345 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 783 mSDsluCounter, 7184 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 7489 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:01,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 7489 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 604 Unchecked, 0.2s Time] [2022-11-03 02:44:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-11-03 02:44:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1319. [2022-11-03 02:44:01,378 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 02:44:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2022-11-03 02:44:01,381 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 310 [2022-11-03 02:44:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2022-11-03 02:44:01,382 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 02:44:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2022-11-03 02:44:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:01,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:01,386 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 02:44:01,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:01,599 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash -426583661, now seen corresponding path program 1 times [2022-11-03 02:44:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316363078] [2022-11-03 02:44:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:01,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:01,604 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:01,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:44:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:02,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:44:02,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:03,588 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 02:44:03,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:03,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:03,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316363078] [2022-11-03 02:44:03,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316363078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:03,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:03,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308281916] [2022-11-03 02:44:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:03,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:44:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:44:03,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:44:03,592 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand has 8 states, 8 states have (on average 38.75) internal successors, (310), 8 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 02:44:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:04,503 INFO L93 Difference]: Finished difference Result 2375 states and 3140 transitions. [2022-11-03 02:44:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:44:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.75) internal successors, (310), 8 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 02:44:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:04,507 INFO L225 Difference]: With dead ends: 2375 [2022-11-03 02:44:04,507 INFO L226 Difference]: Without dead ends: 2036 [2022-11-03 02:44:04,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:44:04,509 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1974 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:04,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 3227 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:44:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-11-03 02:44:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1333. [2022-11-03 02:44:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.2875375375375375) internal successors, (1715), 1332 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1715 transitions. [2022-11-03 02:44:04,533 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1715 transitions. Word has length 310 [2022-11-03 02:44:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:04,533 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1715 transitions. [2022-11-03 02:44:04,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.75) internal successors, (310), 8 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 02:44:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1715 transitions. [2022-11-03 02:44:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:04,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:04,536 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 02:44:04,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:04,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:04,737 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513813, now seen corresponding path program 1 times [2022-11-03 02:44:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:04,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598129922] [2022-11-03 02:44:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:04,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:04,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:04,740 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:04,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:44:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:05,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:44:05,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:05,992 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 02:44:05,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:05,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:05,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598129922] [2022-11-03 02:44:05,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598129922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:05,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:05,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:44:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760783414] [2022-11-03 02:44:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:05,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:44:05,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:44:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:44:05,995 INFO L87 Difference]: Start difference. First operand 1333 states and 1715 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 02:44:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:06,250 INFO L93 Difference]: Finished difference Result 1731 states and 2261 transitions. [2022-11-03 02:44:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:44:06,251 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 02:44:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:06,254 INFO L225 Difference]: With dead ends: 1731 [2022-11-03 02:44:06,255 INFO L226 Difference]: Without dead ends: 1384 [2022-11-03 02:44:06,256 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 02:44:06,256 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 02:44:06,256 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 02:44:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-03 02:44:06,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1333. [2022-11-03 02:44:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.2867867867867868) internal successors, (1714), 1332 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1714 transitions. [2022-11-03 02:44:06,292 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1714 transitions. Word has length 310 [2022-11-03 02:44:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:06,292 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1714 transitions. [2022-11-03 02:44:06,293 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 02:44:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1714 transitions. [2022-11-03 02:44:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:06,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:06,297 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 02:44:06,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 02:44:06,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:06,511 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:06,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1850986985, now seen corresponding path program 1 times [2022-11-03 02:44:06,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:06,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20999460] [2022-11-03 02:44:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:06,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:06,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:06,516 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:06,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:44:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:44:07,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:07,933 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 02:44:07,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:07,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:07,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20999460] [2022-11-03 02:44:07,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20999460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:07,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:07,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:44:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245086732] [2022-11-03 02:44:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:44:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:44:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:44:07,936 INFO L87 Difference]: Start difference. First operand 1333 states and 1714 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 02:44:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:08,203 INFO L93 Difference]: Finished difference Result 1741 states and 2273 transitions. [2022-11-03 02:44:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:44:08,203 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 02:44:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:08,206 INFO L225 Difference]: With dead ends: 1741 [2022-11-03 02:44:08,206 INFO L226 Difference]: Without dead ends: 1394 [2022-11-03 02:44:08,207 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 02:44:08,207 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 02:44:08,207 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 02:44:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-11-03 02:44:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1333. [2022-11-03 02:44:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.2860360360360361) internal successors, (1713), 1332 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1713 transitions. [2022-11-03 02:44:08,227 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1713 transitions. Word has length 310 [2022-11-03 02:44:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:08,228 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1713 transitions. [2022-11-03 02:44:08,228 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 02:44:08,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1713 transitions. [2022-11-03 02:44:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:08,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:08,230 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 02:44:08,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:08,431 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -989153383, now seen corresponding path program 1 times [2022-11-03 02:44:08,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:08,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436643341] [2022-11-03 02:44:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:08,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:08,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:08,435 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:08,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:44:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:09,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:44:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:15,307 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 02:44:15,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:15,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:15,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436643341] [2022-11-03 02:44:15,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436643341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:15,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:15,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 02:44:15,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197269222] [2022-11-03 02:44:15,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:44:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:44:15,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:44:15,309 INFO L87 Difference]: Start difference. First operand 1333 states and 1713 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 02:44:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:15,354 INFO L93 Difference]: Finished difference Result 1777 states and 2319 transitions. [2022-11-03 02:44:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:44:15,355 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 02:44:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:15,357 INFO L225 Difference]: With dead ends: 1777 [2022-11-03 02:44:15,357 INFO L226 Difference]: Without dead ends: 1430 [2022-11-03 02:44:15,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:44:15,358 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 197 mSDsluCounter, 5800 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:15,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 6071 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 252 Unchecked, 0.0s Time] [2022-11-03 02:44:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2022-11-03 02:44:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1421. [2022-11-03 02:44:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.2908450704225352) internal successors, (1833), 1420 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1833 transitions. [2022-11-03 02:44:15,389 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1833 transitions. Word has length 310 [2022-11-03 02:44:15,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:15,389 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1833 transitions. [2022-11-03 02:44:15,390 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 02:44:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1833 transitions. [2022-11-03 02:44:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:15,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:15,393 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 02:44:15,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-03 02:44:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:15,620 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2023641627, now seen corresponding path program 1 times [2022-11-03 02:44:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:15,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436512077] [2022-11-03 02:44:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:15,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:15,624 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:15,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 02:44:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:16,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:44:16,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:17,033 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 02:44:17,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:17,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:17,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436512077] [2022-11-03 02:44:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436512077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:17,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:17,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:44:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713724255] [2022-11-03 02:44:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:17,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:44:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:44:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:44:17,036 INFO L87 Difference]: Start difference. First operand 1421 states and 1833 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 02:44:17,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:17,445 INFO L93 Difference]: Finished difference Result 2481 states and 3272 transitions. [2022-11-03 02:44:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:44:17,445 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 02:44:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:17,448 INFO L225 Difference]: With dead ends: 2481 [2022-11-03 02:44:17,449 INFO L226 Difference]: Without dead ends: 2134 [2022-11-03 02:44:17,450 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 02:44:17,450 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 987 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:17,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 2073 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 35 Unchecked, 0.3s Time] [2022-11-03 02:44:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-11-03 02:44:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1549. [2022-11-03 02:44:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 1.2978036175710594) internal successors, (2009), 1548 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2009 transitions. [2022-11-03 02:44:17,490 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2009 transitions. Word has length 310 [2022-11-03 02:44:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:17,491 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 2009 transitions. [2022-11-03 02:44:17,491 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 02:44:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2009 transitions. [2022-11-03 02:44:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:17,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:17,495 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 02:44:17,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:17,723 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 301638941, now seen corresponding path program 1 times [2022-11-03 02:44:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989608818] [2022-11-03 02:44:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:17,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:17,727 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:17,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:44:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:18,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:44:18,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:20,349 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 02:44:20,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:22,471 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 02:44:22,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:22,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989608818] [2022-11-03 02:44:22,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989608818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:22,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879353230] [2022-11-03 02:44:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:44:22,473 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:44:22,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 02:44:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:44:24,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:24,178 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 02:44:24,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:24,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1879353230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:24,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:44:24,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:44:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99027386] [2022-11-03 02:44:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:44:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:44:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:24,181 INFO L87 Difference]: Start difference. First operand 1549 states and 2009 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 02:44:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:24,323 INFO L93 Difference]: Finished difference Result 3476 states and 4610 transitions. [2022-11-03 02:44:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:44:24,324 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 02:44:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:24,328 INFO L225 Difference]: With dead ends: 3476 [2022-11-03 02:44:24,328 INFO L226 Difference]: Without dead ends: 3129 [2022-11-03 02:44:24,329 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 02:44:24,330 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:24,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1710 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:44:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-11-03 02:44:24,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1565. [2022-11-03 02:44:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.2985933503836318) internal successors, (2031), 1564 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2031 transitions. [2022-11-03 02:44:24,374 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2031 transitions. Word has length 310 [2022-11-03 02:44:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:24,375 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2031 transitions. [2022-11-03 02:44:24,375 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 02:44:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2031 transitions. [2022-11-03 02:44:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:24,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:24,379 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 02:44:24,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:24,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 02:44:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:44:24,789 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash 358897243, now seen corresponding path program 1 times [2022-11-03 02:44:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:24,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520897166] [2022-11-03 02:44:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:24,793 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:24,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 02:44:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:25,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:44:25,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:27,481 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 02:44:27,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:29,431 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 02:44:29,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520897166] [2022-11-03 02:44:29,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520897166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [745946435] [2022-11-03 02:44:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:29,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:44:29,438 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:44:29,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-03 02:44:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:31,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:44:31,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:32,532 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 02:44:32,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:33,204 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 02:44:33,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [745946435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:33,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609059873] [2022-11-03 02:44:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:33,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:33,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:33,207 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:33,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-03 02:44:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:34,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:44:34,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:34,898 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 02:44:34,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:35,463 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 02:44:35,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609059873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:35,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:44:35,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 02:44:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950448078] [2022-11-03 02:44:35,464 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:44:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:44:35,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:44:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:44:35,468 INFO L87 Difference]: Start difference. First operand 1565 states and 2031 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 02:44:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:37,603 INFO L93 Difference]: Finished difference Result 4371 states and 5847 transitions. [2022-11-03 02:44:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:44:37,604 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 02:44:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:37,607 INFO L225 Difference]: With dead ends: 4371 [2022-11-03 02:44:37,608 INFO L226 Difference]: Without dead ends: 4008 [2022-11-03 02:44:37,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1839 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=395, Invalid=1327, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:44:37,609 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 4266 mSDsluCounter, 5611 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4266 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:37,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4266 Valid, 5905 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 536 Invalid, 0 Unknown, 154 Unchecked, 1.2s Time] [2022-11-03 02:44:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2022-11-03 02:44:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 2293. [2022-11-03 02:44:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2292 states have (on average 1.3058464223385688) internal successors, (2993), 2292 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 2993 transitions. [2022-11-03 02:44:37,659 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 2993 transitions. Word has length 310 [2022-11-03 02:44:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:37,659 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 2993 transitions. [2022-11-03 02:44:37,659 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 02:44:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 2993 transitions. [2022-11-03 02:44:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:37,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:37,663 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 02:44:37,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:37,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-03 02:44:38,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-03 02:44:38,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:38,267 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash -660575141, now seen corresponding path program 1 times [2022-11-03 02:44:38,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:38,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861016832] [2022-11-03 02:44:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:38,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:38,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:38,271 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:38,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:44:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:39,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:44:39,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:41,659 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 02:44:41,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:44,539 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 02:44:44,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861016832] [2022-11-03 02:44:44,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861016832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:44,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [78063655] [2022-11-03 02:44:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:44,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:44:44,541 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:44:44,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 02:44:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:46,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:44:46,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:46,214 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 02:44:46,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:46,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [78063655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:46,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:44:46,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:44:46,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671811063] [2022-11-03 02:44:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:46,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:44:46,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:46,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:44:46,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:46,217 INFO L87 Difference]: Start difference. First operand 2293 states and 2993 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 02:44:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:46,446 INFO L93 Difference]: Finished difference Result 4252 states and 5626 transitions. [2022-11-03 02:44:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:44:46,446 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 02:44:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:46,450 INFO L225 Difference]: With dead ends: 4252 [2022-11-03 02:44:46,450 INFO L226 Difference]: Without dead ends: 3457 [2022-11-03 02:44:46,451 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 02:44:46,451 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 02:44:46,452 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 02:44:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2022-11-03 02:44:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 2299. [2022-11-03 02:44:46,506 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 02:44:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2999 transitions. [2022-11-03 02:44:46,508 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2999 transitions. Word has length 310 [2022-11-03 02:44:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:46,508 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 2999 transitions. [2022-11-03 02:44:46,508 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 02:44:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2999 transitions. [2022-11-03 02:44:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:46,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:46,512 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 02:44:46,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 02:44:46,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Ended with exit code 0 [2022-11-03 02:44:46,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:46,913 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1640247449, now seen corresponding path program 1 times [2022-11-03 02:44:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:46,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746827287] [2022-11-03 02:44:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:46,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:46,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:46,917 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:46,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:44:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:47,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:44:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:50,295 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 02:44:50,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:53,142 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 02:44:53,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:53,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746827287] [2022-11-03 02:44:53,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746827287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:53,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1698106821] [2022-11-03 02:44:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:53,143 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:44:53,147 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:44:53,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 02:44:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:54,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:44:54,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:54,851 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 02:44:54,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:44:54,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1698106821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:54,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:44:54,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:44:54,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129997214] [2022-11-03 02:44:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:54,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:44:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:44:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:54,854 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 02:44:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:55,037 INFO L93 Difference]: Finished difference Result 4288 states and 5668 transitions. [2022-11-03 02:44:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:44:55,038 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 02:44:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:55,042 INFO L225 Difference]: With dead ends: 4288 [2022-11-03 02:44:55,042 INFO L226 Difference]: Without dead ends: 3487 [2022-11-03 02:44:55,044 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 02:44:55,044 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 02:44:55,045 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 02:44:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-11-03 02:44:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2335. [2022-11-03 02:44:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2334 states have (on average 1.305484147386461) internal successors, (3047), 2334 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3047 transitions. [2022-11-03 02:44:55,120 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3047 transitions. Word has length 310 [2022-11-03 02:44:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:55,121 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3047 transitions. [2022-11-03 02:44:55,121 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 02:44:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3047 transitions. [2022-11-03 02:44:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:44:55,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:55,126 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 02:44:55,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:55,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-03 02:44:55,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:55,551 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1247220439, now seen corresponding path program 1 times [2022-11-03 02:44:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:55,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454212575] [2022-11-03 02:44:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:55,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:55,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:55,554 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:55,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:44:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:56,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:44:56,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:59,242 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 02:44:59,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:02,178 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 02:45:02,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:02,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454212575] [2022-11-03 02:45:02,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454212575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:02,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1112278206] [2022-11-03 02:45:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:02,179 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:45:02,180 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:45:02,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 02:45:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:04,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:45:04,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:06,924 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 02:45:06,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:14,054 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 02:45:14,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1112278206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:14,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725431573] [2022-11-03 02:45:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:14,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:45:14,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:45:14,055 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:45:14,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-03 02:45:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:14,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:45:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:16,117 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 02:45:16,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:17,403 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 02:45:17,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725431573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:17,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:45:17,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 10, 10] total 27 [2022-11-03 02:45:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124943029] [2022-11-03 02:45:17,404 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:45:17,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:45:17,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:17,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:45:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:45:17,407 INFO L87 Difference]: Start difference. First operand 2335 states and 3047 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 02:45:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:19,365 INFO L93 Difference]: Finished difference Result 7129 states and 9391 transitions. [2022-11-03 02:45:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:45:19,367 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 02:45:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:19,372 INFO L225 Difference]: With dead ends: 7129 [2022-11-03 02:45:19,372 INFO L226 Difference]: Without dead ends: 6292 [2022-11-03 02:45:19,374 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 02:45:19,375 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2984 mSDsluCounter, 8694 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 8986 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:19,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2984 Valid, 8986 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 295 Unchecked, 0.5s Time] [2022-11-03 02:45:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6292 states. [2022-11-03 02:45:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6292 to 3713. [2022-11-03 02:45:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3712 states have (on average 1.2941810344827587) internal successors, (4804), 3712 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:45:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 4804 transitions. [2022-11-03 02:45:19,454 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 4804 transitions. Word has length 310 [2022-11-03 02:45:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:19,454 INFO L495 AbstractCegarLoop]: Abstraction has 3713 states and 4804 transitions. [2022-11-03 02:45:19,455 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 02:45:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 4804 transitions. [2022-11-03 02:45:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:45:19,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:19,486 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 02:45:19,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 02:45:19,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-03 02:45:19,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2022-11-03 02:45:20,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:20,087 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1756693529, now seen corresponding path program 1 times [2022-11-03 02:45:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:20,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978259429] [2022-11-03 02:45:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:20,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:20,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:20,092 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:20,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 02:45:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:21,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-03 02:45:21,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:32,495 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 02:45:32,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:40,078 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 02:45:40,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:40,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978259429] [2022-11-03 02:45:40,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978259429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:40,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [942538668] [2022-11-03 02:45:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:40,079 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:40,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:45:40,080 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:45:40,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-03 02:45:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:42,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-03 02:45:42,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:54,376 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 02:45:54,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:58,705 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 02:45:58,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [942538668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:58,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747829765] [2022-11-03 02:45:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:58,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:45:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:45:58,707 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:45:58,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-03 02:45:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:59,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-03 02:45:59,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:11,706 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 02:46:11,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:17,761 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 02:46:17,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747829765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:17,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:46:17,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 19, 9, 23, 19] total 55 [2022-11-03 02:46:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465141403] [2022-11-03 02:46:17,762 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:46:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-03 02:46:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-03 02:46:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=613, Invalid=2357, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:46:17,766 INFO L87 Difference]: Start difference. First operand 3713 states and 4804 transitions. Second operand has 55 states, 55 states have (on average 12.654545454545454) internal successors, (696), 55 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:35,385 INFO L93 Difference]: Finished difference Result 6470 states and 8421 transitions. [2022-11-03 02:46:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-03 02:46:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 12.654545454545454) internal successors, (696), 55 states have internal predecessors, (696), 0 states have call successors, (0), 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 02:46:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:35,391 INFO L225 Difference]: With dead ends: 6470 [2022-11-03 02:46:35,391 INFO L226 Difference]: Without dead ends: 6468 [2022-11-03 02:46:35,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1922 GetRequests, 1805 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 3447 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=2301, Invalid=10581, Unknown=0, NotChecked=0, Total=12882 [2022-11-03 02:46:35,393 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 3005 mSDsluCounter, 10525 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 10875 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2160 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:46:35,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 10875 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1257 Invalid, 0 Unknown, 2160 Unchecked, 2.2s Time] [2022-11-03 02:46:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2022-11-03 02:46:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 5402. [2022-11-03 02:46:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.3040177744862063) internal successors, (7043), 5401 states have internal predecessors, (7043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 7043 transitions. [2022-11-03 02:46:35,520 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 7043 transitions. Word has length 310 [2022-11-03 02:46:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:35,520 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 7043 transitions. [2022-11-03 02:46:35,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 12.654545454545454) internal successors, (696), 55 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 7043 transitions. [2022-11-03 02:46:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:46:35,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:35,526 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 02:46:35,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-03 02:46:35,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:35,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:36,130 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1756753111, now seen corresponding path program 1 times [2022-11-03 02:46:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344316608] [2022-11-03 02:46:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:36,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:36,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:36,134 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:36,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 02:46:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:37,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:46:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:37,368 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 02:46:37,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:37,368 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344316608] [2022-11-03 02:46:37,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344316608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:37,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:37,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:46:37,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857051482] [2022-11-03 02:46:37,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:37,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:46:37,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:46:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:46:37,370 INFO L87 Difference]: Start difference. First operand 5402 states and 7043 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 02:46:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:37,644 INFO L93 Difference]: Finished difference Result 13536 states and 17748 transitions. [2022-11-03 02:46:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:46:37,645 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 02:46:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:37,651 INFO L225 Difference]: With dead ends: 13536 [2022-11-03 02:46:37,651 INFO L226 Difference]: Without dead ends: 9102 [2022-11-03 02:46:37,655 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 02:46:37,655 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 880 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1479 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 02:46:37,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1479 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2022-11-03 02:46:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 5570. [2022-11-03 02:46:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5569 states have (on average 1.2973603878613755) internal successors, (7225), 5569 states have internal predecessors, (7225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:37,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 7225 transitions. [2022-11-03 02:46:37,825 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 7225 transitions. Word has length 310 [2022-11-03 02:46:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:37,825 INFO L495 AbstractCegarLoop]: Abstraction has 5570 states and 7225 transitions. [2022-11-03 02:46:37,825 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 02:46:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 7225 transitions. [2022-11-03 02:46:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:46:37,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:37,834 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, 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 02:46:37,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-03 02:46:38,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:38,050 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2014858967, now seen corresponding path program 1 times [2022-11-03 02:46:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:38,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685854888] [2022-11-03 02:46:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:38,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:38,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:38,053 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:38,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 02:46:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:38,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:46:38,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:38,992 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 02:46:38,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:46:38,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:46:38,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685854888] [2022-11-03 02:46:38,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685854888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:46:38,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:46:38,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:46:38,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034851130] [2022-11-03 02:46:38,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:46:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:46:38,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:46:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:46:38,995 INFO L87 Difference]: Start difference. First operand 5570 states and 7225 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 02:46:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:46:39,252 INFO L93 Difference]: Finished difference Result 12786 states and 16717 transitions. [2022-11-03 02:46:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:46:39,252 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 02:46:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:46:39,260 INFO L225 Difference]: With dead ends: 12786 [2022-11-03 02:46:39,260 INFO L226 Difference]: Without dead ends: 9102 [2022-11-03 02:46:39,263 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 02:46:39,264 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 652 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1652 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 02:46:39,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1652 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:46:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2022-11-03 02:46:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 5570. [2022-11-03 02:46:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5569 states have (on average 1.2923325552163765) internal successors, (7197), 5569 states have internal predecessors, (7197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:46:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 7197 transitions. [2022-11-03 02:46:39,506 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 7197 transitions. Word has length 310 [2022-11-03 02:46:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:46:39,507 INFO L495 AbstractCegarLoop]: Abstraction has 5570 states and 7197 transitions. [2022-11-03 02:46:39,507 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 02:46:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 7197 transitions. [2022-11-03 02:46:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:46:39,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:46:39,515 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 02:46:39,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 02:46:39,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:46:39,734 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:46:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:46:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2014918549, now seen corresponding path program 1 times [2022-11-03 02:46:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:46:39,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651399487] [2022-11-03 02:46:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:39,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:46:39,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:46:39,738 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:46:39,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 02:46:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:40,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 02:46:40,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:46:49,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:00,705 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 02:47:00,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651399487] [2022-11-03 02:47:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651399487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668738902] [2022-11-03 02:47:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:00,705 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:47:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:47:00,706 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:47:00,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2022-11-03 02:47:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:02,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-03 02:47:02,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:09,265 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 02:47:09,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:14,830 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 02:47:14,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [668738902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:14,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215966207] [2022-11-03 02:47:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:14,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:47:14,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:47:14,831 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:47:14,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-03 02:47:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:15,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-03 02:47:15,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:21,120 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 02:47:21,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:26,841 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 02:47:26,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215966207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:26,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:47:26,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24, 20, 21, 21] total 85 [2022-11-03 02:47:26,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32137929] [2022-11-03 02:47:26,842 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:47:26,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-11-03 02:47:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:26,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-11-03 02:47:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=6629, Unknown=0, NotChecked=0, Total=7140 [2022-11-03 02:47:26,844 INFO L87 Difference]: Start difference. First operand 5570 states and 7197 transitions. Second operand has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:41,436 INFO L93 Difference]: Finished difference Result 22702 states and 30394 transitions. [2022-11-03 02:47:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-03 02:47:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 0 states have call successors, (0), 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 02:47:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:41,448 INFO L225 Difference]: With dead ends: 22702 [2022-11-03 02:47:41,448 INFO L226 Difference]: Without dead ends: 22700 [2022-11-03 02:47:41,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1912 GetRequests, 1768 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6961 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=2273, Invalid=17749, Unknown=0, NotChecked=0, Total=20022 [2022-11-03 02:47:41,452 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 7056 mSDsluCounter, 22261 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7056 SdHoareTripleChecker+Valid, 22643 SdHoareTripleChecker+Invalid, 9431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7837 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:41,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7056 Valid, 22643 Invalid, 9431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1537 Invalid, 0 Unknown, 7837 Unchecked, 2.5s Time] [2022-11-03 02:47:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22700 states. [2022-11-03 02:47:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22700 to 9380. [2022-11-03 02:47:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 9379 states have (on average 1.3026975157266234) internal successors, (12218), 9379 states have internal predecessors, (12218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 12218 transitions. [2022-11-03 02:47:41,684 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 12218 transitions. Word has length 310 [2022-11-03 02:47:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:41,684 INFO L495 AbstractCegarLoop]: Abstraction has 9380 states and 12218 transitions. [2022-11-03 02:47:41,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 12218 transitions. [2022-11-03 02:47:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:47:41,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:41,694 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 02:47:41,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-11-03 02:47:41,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 02:47:42,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Ended with exit code 0 [2022-11-03 02:47:42,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:47:42,295 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1205571923, now seen corresponding path program 1 times [2022-11-03 02:47:42,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:42,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583198576] [2022-11-03 02:47:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:42,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:42,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:42,299 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:42,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 02:47:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:43,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:47:43,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:43,630 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 02:47:43,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:43,681 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 02:47:43,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:43,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583198576] [2022-11-03 02:47:43,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583198576] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:47:43,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:47:43,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 02:47:43,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834696473] [2022-11-03 02:47:43,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:47:43,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:47:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:47:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:47:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:47:43,683 INFO L87 Difference]: Start difference. First operand 9380 states and 12218 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 02:47:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:44,256 INFO L93 Difference]: Finished difference Result 33390 states and 43875 transitions. [2022-11-03 02:47:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:47:44,257 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 02:47:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:44,272 INFO L225 Difference]: With dead ends: 33390 [2022-11-03 02:47:44,272 INFO L226 Difference]: Without dead ends: 25226 [2022-11-03 02:47:44,278 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 02:47:44,279 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1447 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:44,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1422 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:47:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25226 states. [2022-11-03 02:47:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25226 to 9828. [2022-11-03 02:47:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9828 states, 9827 states have (on average 1.3003968657779588) internal successors, (12779), 9827 states have internal predecessors, (12779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9828 states to 9828 states and 12779 transitions. [2022-11-03 02:47:44,533 INFO L78 Accepts]: Start accepts. Automaton has 9828 states and 12779 transitions. Word has length 310 [2022-11-03 02:47:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:44,533 INFO L495 AbstractCegarLoop]: Abstraction has 9828 states and 12779 transitions. [2022-11-03 02:47:44,533 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 02:47:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9828 states and 12779 transitions. [2022-11-03 02:47:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:47:44,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:44,541 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 02:47:44,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-03 02:47:44,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:44,741 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1326189799, now seen corresponding path program 1 times [2022-11-03 02:47:44,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:44,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055892518] [2022-11-03 02:47:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:44,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:44,745 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:44,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 02:47:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:45,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 02:47:45,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:47:48,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:01,261 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 02:48:01,261 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055892518] [2022-11-03 02:48:01,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055892518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1411812905] [2022-11-03 02:48:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:01,261 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:48:01,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:48:01,262 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:48:01,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2022-11-03 02:48:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:03,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 02:48:03,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 02:48:06,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:15,410 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 02:48:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1411812905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173867837] [2022-11-03 02:48:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:15,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:15,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:15,414 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:15,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-03 02:48:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:16,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-03 02:48:16,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:22,054 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 02:48:22,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:34,279 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 02:48:34,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173867837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:48:34,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:48:34,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15, 13, 20, 23] total 63 [2022-11-03 02:48:34,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321405609] [2022-11-03 02:48:34,280 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:48:34,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-03 02:48:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-03 02:48:34,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=3105, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 02:48:34,283 INFO L87 Difference]: Start difference. First operand 9828 states and 12779 transitions. Second operand has 63 states, 63 states have (on average 15.317460317460318) internal successors, (965), 63 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:42,995 INFO L93 Difference]: Finished difference Result 10759 states and 14034 transitions. [2022-11-03 02:48:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-03 02:48:42,996 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 15.317460317460318) internal successors, (965), 63 states have internal predecessors, (965), 0 states have call successors, (0), 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 02:48:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:43,001 INFO L225 Difference]: With dead ends: 10759 [2022-11-03 02:48:43,002 INFO L226 Difference]: Without dead ends: 10757 [2022-11-03 02:48:43,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1909 GetRequests, 1795 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2879 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=3032, Invalid=9850, Unknown=0, NotChecked=0, Total=12882 [2022-11-03 02:48:43,007 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 3204 mSDsluCounter, 10087 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3204 SdHoareTripleChecker+Valid, 10402 SdHoareTripleChecker+Invalid, 4101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2694 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:43,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3204 Valid, 10402 Invalid, 4101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1389 Invalid, 0 Unknown, 2694 Unchecked, 2.0s Time] [2022-11-03 02:48:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2022-11-03 02:48:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 9836. [2022-11-03 02:48:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 1.3001525165226233) internal successors, (12787), 9835 states have internal predecessors, (12787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 12787 transitions. [2022-11-03 02:48:43,213 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 12787 transitions. Word has length 310 [2022-11-03 02:48:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:43,213 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 12787 transitions. [2022-11-03 02:48:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 15.317460317460318) internal successors, (965), 63 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 12787 transitions. [2022-11-03 02:48:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:48:43,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:43,221 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 02:48:43,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:43,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Ended with exit code 0 [2022-11-03 02:48:43,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-03 02:48:43,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:43,821 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:43,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash 993850195, now seen corresponding path program 1 times [2022-11-03 02:48:43,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:43,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221030340] [2022-11-03 02:48:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:43,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:43,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:43,826 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:43,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 02:48:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:44,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:48:44,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:45,173 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 02:48:45,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:45,206 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 02:48:45,207 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:48:45,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221030340] [2022-11-03 02:48:45,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221030340] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:48:45,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:48:45,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 02:48:45,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368104469] [2022-11-03 02:48:45,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:45,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:48:45,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:45,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:48:45,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:48:45,209 INFO L87 Difference]: Start difference. First operand 9836 states and 12787 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 02:48:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:48:45,569 INFO L93 Difference]: Finished difference Result 26642 states and 34947 transitions. [2022-11-03 02:48:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:48:45,570 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 02:48:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:48:45,584 INFO L225 Difference]: With dead ends: 26642 [2022-11-03 02:48:45,584 INFO L226 Difference]: Without dead ends: 17942 [2022-11-03 02:48:45,590 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 02:48:45,591 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 02:48:45,591 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 02:48:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17942 states. [2022-11-03 02:48:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17942 to 9836. [2022-11-03 02:48:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 1.2910015251652263) internal successors, (12697), 9835 states have internal predecessors, (12697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 12697 transitions. [2022-11-03 02:48:45,886 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 12697 transitions. Word has length 310 [2022-11-03 02:48:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:48:45,887 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 12697 transitions. [2022-11-03 02:48:45,887 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 02:48:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 12697 transitions. [2022-11-03 02:48:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:48:45,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:45,894 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 02:48:45,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:46,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:46,095 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 184503569, now seen corresponding path program 1 times [2022-11-03 02:48:46,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:48:46,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650491943] [2022-11-03 02:48:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:46,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:48:46,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:48:46,099 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:48:46,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 02:48:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:46,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 02:48:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 02:48:50,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:04,994 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 02:49:04,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:49:04,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650491943] [2022-11-03 02:49:04,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650491943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:04,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1188669024] [2022-11-03 02:49:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:04,995 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:49:04,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:49:04,996 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:49:04,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (88)] Waiting until timeout for monitored process [2022-11-03 02:49:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:06,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 02:49:06,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:49:10,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:19,050 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 02:49:19,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1188669024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309269830] [2022-11-03 02:49:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:19,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:19,051 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:49:19,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-11-03 02:49:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:19,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-03 02:49:19,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:26,692 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 02:49:26,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:39,361 WARN L234 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 226 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:47,629 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 02:49:47,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309269830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:47,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:49:47,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19, 17, 24, 27] total 79 [2022-11-03 02:49:47,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696813489] [2022-11-03 02:49:47,630 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:49:47,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-03 02:49:47,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:49:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-03 02:49:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1067, Invalid=5095, Unknown=0, NotChecked=0, Total=6162 [2022-11-03 02:49:47,632 INFO L87 Difference]: Start difference. First operand 9836 states and 12697 transitions. Second operand has 79 states, 79 states have (on average 12.291139240506329) internal successors, (971), 79 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:00,766 INFO L93 Difference]: Finished difference Result 10824 states and 14028 transitions. [2022-11-03 02:50:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-03 02:50:00,767 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 12.291139240506329) internal successors, (971), 79 states have internal predecessors, (971), 0 states have call successors, (0), 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 02:50:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:00,773 INFO L225 Difference]: With dead ends: 10824 [2022-11-03 02:50:00,773 INFO L226 Difference]: Without dead ends: 10822 [2022-11-03 02:50:00,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1927 GetRequests, 1787 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4491 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=3970, Invalid=15490, Unknown=0, NotChecked=0, Total=19460 [2022-11-03 02:50:00,776 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 3701 mSDsluCounter, 12502 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3701 SdHoareTripleChecker+Valid, 12817 SdHoareTripleChecker+Invalid, 4728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3052 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:00,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3701 Valid, 12817 Invalid, 4728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1646 Invalid, 0 Unknown, 3052 Unchecked, 2.5s Time] [2022-11-03 02:50:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2022-11-03 02:50:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 9844. [2022-11-03 02:50:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9844 states, 9843 states have (on average 1.2907650106674795) internal successors, (12705), 9843 states have internal predecessors, (12705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9844 states to 9844 states and 12705 transitions. [2022-11-03 02:50:00,996 INFO L78 Accepts]: Start accepts. Automaton has 9844 states and 12705 transitions. Word has length 310 [2022-11-03 02:50:00,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:00,997 INFO L495 AbstractCegarLoop]: Abstraction has 9844 states and 12705 transitions. [2022-11-03 02:50:00,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 12.291139240506329) internal successors, (971), 79 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9844 states and 12705 transitions. [2022-11-03 02:50:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:50:01,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:01,007 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 02:50:01,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2022-11-03 02:50:01,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (88)] Ended with exit code 0 [2022-11-03 02:50:01,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-11-03 02:50:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:01,631 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -366164155, now seen corresponding path program 1 times [2022-11-03 02:50:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:50:01,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436281075] [2022-11-03 02:50:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:01,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:50:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:50:01,634 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:50:01,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 02:50:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:02,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:50:02,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:04,168 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 02:50:04,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:06,662 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 02:50:06,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:50:06,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436281075] [2022-11-03 02:50:06,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436281075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:06,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [998124182] [2022-11-03 02:50:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:50:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:50:06,664 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:50:06,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2022-11-03 02:50:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:08,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:50:08,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:09,632 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 02:50:09,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:10,284 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 02:50:10,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [998124182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:10,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952668071] [2022-11-03 02:50:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:10,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:10,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:10,286 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:10,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-03 02:50:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:11,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:50:11,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:12,158 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 02:50:12,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:13,666 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 02:50:13,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952668071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:13,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:50:13,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 7, 7] total 29 [2022-11-03 02:50:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008580069] [2022-11-03 02:50:13,667 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:50:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 02:50:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:50:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 02:50:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-11-03 02:50:13,670 INFO L87 Difference]: Start difference. First operand 9844 states and 12705 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 02:50:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:55,104 INFO L93 Difference]: Finished difference Result 58700 states and 78097 transitions. [2022-11-03 02:50:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-11-03 02:50:55,107 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 02:50:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:55,137 INFO L225 Difference]: With dead ends: 58700 [2022-11-03 02:50:55,137 INFO L226 Difference]: Without dead ends: 55822 [2022-11-03 02:50:55,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1827 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14417 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=7397, Invalid=30823, Unknown=0, NotChecked=0, Total=38220 [2022-11-03 02:50:55,147 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 23851 mSDsluCounter, 14630 mSDsCounter, 0 mSdLazyCounter, 3168 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23851 SdHoareTripleChecker+Valid, 15757 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:55,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23851 Valid, 15757 Invalid, 3350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [182 Valid, 3168 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 02:50:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55822 states. [2022-11-03 02:50:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55822 to 11232. [2022-11-03 02:50:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11232 states, 11231 states have (on average 1.2955213249042827) internal successors, (14550), 11231 states have internal predecessors, (14550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11232 states to 11232 states and 14550 transitions. [2022-11-03 02:50:55,627 INFO L78 Accepts]: Start accepts. Automaton has 11232 states and 14550 transitions. Word has length 310 [2022-11-03 02:50:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:55,628 INFO L495 AbstractCegarLoop]: Abstraction has 11232 states and 14550 transitions. [2022-11-03 02:50:55,628 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 02:50:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 11232 states and 14550 transitions. [2022-11-03 02:50:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:50:55,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:55,638 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 02:50:55,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:55,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-03 02:50:56,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Ended with exit code 0 [2022-11-03 02:50:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:50:56,255 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1423328221, now seen corresponding path program 1 times [2022-11-03 02:50:56,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:50:56,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586410918] [2022-11-03 02:50:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:56,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:50:56,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:50:56,258 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:50:56,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-03 02:50:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:57,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 02:50:57,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:57,538 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 02:50:57,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:50:57,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:50:57,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586410918] [2022-11-03 02:50:57,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586410918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:57,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:57,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:50:57,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518215821] [2022-11-03 02:50:57,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:57,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:57,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:50:57,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:57,540 INFO L87 Difference]: Start difference. First operand 11232 states and 14550 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 02:50:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:58,155 INFO L93 Difference]: Finished difference Result 22524 states and 29144 transitions. [2022-11-03 02:50:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:50:58,155 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 02:50:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:58,165 INFO L225 Difference]: With dead ends: 22524 [2022-11-03 02:50:58,165 INFO L226 Difference]: Without dead ends: 14318 [2022-11-03 02:50:58,171 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 02:50:58,171 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:58,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1324 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:50:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14318 states. [2022-11-03 02:50:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14318 to 10380. [2022-11-03 02:50:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10380 states, 10379 states have (on average 1.2861547355236536) internal successors, (13349), 10379 states have internal predecessors, (13349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:50:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10380 states to 10380 states and 13349 transitions. [2022-11-03 02:50:58,456 INFO L78 Accepts]: Start accepts. Automaton has 10380 states and 13349 transitions. Word has length 310 [2022-11-03 02:50:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:58,456 INFO L495 AbstractCegarLoop]: Abstraction has 10380 states and 13349 transitions. [2022-11-03 02:50:58,456 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 02:50:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 10380 states and 13349 transitions. [2022-11-03 02:50:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:50:58,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:58,462 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 02:50:58,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2022-11-03 02:50:58,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:50:58,663 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:58,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2129835505, now seen corresponding path program 1 times [2022-11-03 02:50:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:50:58,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533695976] [2022-11-03 02:50:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:58,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:50:58,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:50:58,666 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:50:58,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-03 02:50:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:59,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-03 02:50:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:14,362 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 02:51:14,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:14,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:14,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533695976] [2022-11-03 02:51:14,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533695976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:14,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:14,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-03 02:51:14,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054761731] [2022-11-03 02:51:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:14,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 02:51:14,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 02:51:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:51:14,365 INFO L87 Difference]: Start difference. First operand 10380 states and 13349 transitions. Second operand has 25 states, 25 states have (on average 12.4) internal successors, (310), 25 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 02:51:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:20,654 INFO L93 Difference]: Finished difference Result 29280 states and 37981 transitions. [2022-11-03 02:51:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:51:20,656 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.4) internal successors, (310), 25 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 02:51:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:20,668 INFO L225 Difference]: With dead ends: 29280 [2022-11-03 02:51:20,668 INFO L226 Difference]: Without dead ends: 21548 [2022-11-03 02:51:20,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 225 SyntacticMatches, 61 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=272, Invalid=1798, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 02:51:20,674 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 4148 mSDsluCounter, 12597 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 13213 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:20,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4148 Valid, 13213 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1087 Invalid, 0 Unknown, 433 Unchecked, 2.1s Time] [2022-11-03 02:51:20,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21548 states. [2022-11-03 02:51:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21548 to 10906. [2022-11-03 02:51:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10906 states, 10905 states have (on average 1.281430536451169) internal successors, (13974), 10905 states have internal predecessors, (13974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10906 states to 10906 states and 13974 transitions. [2022-11-03 02:51:20,922 INFO L78 Accepts]: Start accepts. Automaton has 10906 states and 13974 transitions. Word has length 310 [2022-11-03 02:51:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:20,923 INFO L495 AbstractCegarLoop]: Abstraction has 10906 states and 13974 transitions. [2022-11-03 02:51:20,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.4) internal successors, (310), 25 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 02:51:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10906 states and 13974 transitions. [2022-11-03 02:51:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:51:20,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:20,928 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 02:51:20,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (94)] Ended with exit code 0 [2022-11-03 02:51:21,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:21,129 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2137834479, now seen corresponding path program 1 times [2022-11-03 02:51:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:21,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614434788] [2022-11-03 02:51:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:21,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:21,132 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:21,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-03 02:51:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:21,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:51:21,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:25,945 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 02:51:25,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:25,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:25,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614434788] [2022-11-03 02:51:25,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614434788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:25,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:25,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-03 02:51:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900595593] [2022-11-03 02:51:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:51:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:51:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:51:25,948 INFO L87 Difference]: Start difference. First operand 10906 states and 13974 transitions. Second operand has 20 states, 20 states have (on average 15.5) internal successors, (310), 20 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 02:51:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:26,852 INFO L93 Difference]: Finished difference Result 18272 states and 23553 transitions. [2022-11-03 02:51:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:51:26,852 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 15.5) internal successors, (310), 20 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 02:51:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:26,860 INFO L225 Difference]: With dead ends: 18272 [2022-11-03 02:51:26,860 INFO L226 Difference]: Without dead ends: 14426 [2022-11-03 02:51:26,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:51:26,863 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 603 mSDsluCounter, 9457 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 10091 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 780 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:26,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 10091 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 780 Unchecked, 0.4s Time] [2022-11-03 02:51:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14426 states. [2022-11-03 02:51:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14426 to 10924. [2022-11-03 02:51:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10924 states, 10923 states have (on average 1.281790716836034) internal successors, (14001), 10923 states have internal predecessors, (14001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10924 states to 10924 states and 14001 transitions. [2022-11-03 02:51:27,093 INFO L78 Accepts]: Start accepts. Automaton has 10924 states and 14001 transitions. Word has length 310 [2022-11-03 02:51:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:27,093 INFO L495 AbstractCegarLoop]: Abstraction has 10924 states and 14001 transitions. [2022-11-03 02:51:27,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.5) internal successors, (310), 20 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 02:51:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10924 states and 14001 transitions. [2022-11-03 02:51:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:51:27,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:27,099 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 02:51:27,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (95)] Ended with exit code 0 [2022-11-03 02:51:27,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:27,299 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -980302189, now seen corresponding path program 1 times [2022-11-03 02:51:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233037296] [2022-11-03 02:51:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:27,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:27,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:27,303 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:27,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 02:51:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:28,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-03 02:51:28,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:31,801 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 02:51:31,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:31,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:31,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233037296] [2022-11-03 02:51:31,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233037296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:31,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:31,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-03 02:51:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517795802] [2022-11-03 02:51:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:51:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:51:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:51:31,804 INFO L87 Difference]: Start difference. First operand 10924 states and 14001 transitions. Second operand has 21 states, 21 states have (on average 14.761904761904763) internal successors, (310), 21 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 02:51:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:34,735 INFO L93 Difference]: Finished difference Result 30774 states and 39904 transitions. [2022-11-03 02:51:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:51:34,737 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.761904761904763) internal successors, (310), 21 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 02:51:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:34,749 INFO L225 Difference]: With dead ends: 30774 [2022-11-03 02:51:34,749 INFO L226 Difference]: Without dead ends: 22532 [2022-11-03 02:51:34,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 285 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:51:34,755 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 3861 mSDsluCounter, 10182 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3861 SdHoareTripleChecker+Valid, 10812 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:34,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3861 Valid, 10812 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 782 Invalid, 0 Unknown, 229 Unchecked, 1.4s Time] [2022-11-03 02:51:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22532 states. [2022-11-03 02:51:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22532 to 11236. [2022-11-03 02:51:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11236 states, 11235 states have (on average 1.278148642634624) internal successors, (14360), 11235 states have internal predecessors, (14360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 14360 transitions. [2022-11-03 02:51:35,014 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 14360 transitions. Word has length 310 [2022-11-03 02:51:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:35,015 INFO L495 AbstractCegarLoop]: Abstraction has 11236 states and 14360 transitions. [2022-11-03 02:51:35,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.761904761904763) internal successors, (310), 21 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 02:51:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 14360 transitions. [2022-11-03 02:51:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:51:35,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:35,021 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 02:51:35,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:35,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:35,222 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1521607957, now seen corresponding path program 1 times [2022-11-03 02:51:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:35,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256477274] [2022-11-03 02:51:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:35,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:35,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:35,226 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:35,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-03 02:51:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:36,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 171 conjunts are in the unsatisfiable core [2022-11-03 02:51:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:57,212 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 02:51:57,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:57,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:57,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256477274] [2022-11-03 02:51:57,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256477274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:57,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:57,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 02:51:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502879785] [2022-11-03 02:51:57,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:57,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:51:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:51:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:51:57,214 INFO L87 Difference]: Start difference. First operand 11236 states and 14360 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 02:51:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:57,841 INFO L93 Difference]: Finished difference Result 25369 states and 33003 transitions. [2022-11-03 02:51:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:51:57,842 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 02:51:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:57,857 INFO L225 Difference]: With dead ends: 25369 [2022-11-03 02:51:57,857 INFO L226 Difference]: Without dead ends: 17439 [2022-11-03 02:51:57,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:57,863 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 300 mSDsluCounter, 4631 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 5201 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:57,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 5201 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 195 Unchecked, 0.2s Time] [2022-11-03 02:51:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17439 states. [2022-11-03 02:51:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17439 to 11760. [2022-11-03 02:51:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11760 states, 11759 states have (on average 1.2714516540522154) internal successors, (14951), 11759 states have internal predecessors, (14951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11760 states to 11760 states and 14951 transitions. [2022-11-03 02:51:58,193 INFO L78 Accepts]: Start accepts. Automaton has 11760 states and 14951 transitions. Word has length 310 [2022-11-03 02:51:58,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:58,193 INFO L495 AbstractCegarLoop]: Abstraction has 11760 states and 14951 transitions. [2022-11-03 02:51:58,194 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 02:51:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 11760 states and 14951 transitions. [2022-11-03 02:51:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:51:58,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:58,201 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 02:51:58,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (97)] Ended with exit code 0 [2022-11-03 02:51:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:58,402 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1274995219, now seen corresponding path program 1 times [2022-11-03 02:51:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:58,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319724558] [2022-11-03 02:51:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:58,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:58,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:58,406 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:58,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-03 02:51:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:59,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-03 02:51:59,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:08,370 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 02:52:08,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:08,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:08,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319724558] [2022-11-03 02:52:08,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319724558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:08,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:08,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-03 02:52:08,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871457432] [2022-11-03 02:52:08,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:08,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 02:52:08,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 02:52:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:52:08,372 INFO L87 Difference]: Start difference. First operand 11760 states and 14951 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 02:52:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:10,960 INFO L93 Difference]: Finished difference Result 26723 states and 34660 transitions. [2022-11-03 02:52:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:52:10,961 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 02:52:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:10,970 INFO L225 Difference]: With dead ends: 26723 [2022-11-03 02:52:10,970 INFO L226 Difference]: Without dead ends: 18817 [2022-11-03 02:52:10,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:52:10,974 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1090 mSDsluCounter, 11352 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 11944 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:10,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 11944 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 480 Invalid, 0 Unknown, 596 Unchecked, 0.9s Time] [2022-11-03 02:52:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18817 states. [2022-11-03 02:52:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18817 to 11752. [2022-11-03 02:52:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11752 states, 11751 states have (on average 1.2712960599097949) internal successors, (14939), 11751 states have internal predecessors, (14939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11752 states to 11752 states and 14939 transitions. [2022-11-03 02:52:11,226 INFO L78 Accepts]: Start accepts. Automaton has 11752 states and 14939 transitions. Word has length 310 [2022-11-03 02:52:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:11,227 INFO L495 AbstractCegarLoop]: Abstraction has 11752 states and 14939 transitions. [2022-11-03 02:52:11,227 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 02:52:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 11752 states and 14939 transitions. [2022-11-03 02:52:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:52:11,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:11,233 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 02:52:11,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (98)] Ended with exit code 0 [2022-11-03 02:52:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:11,434 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1862439787, now seen corresponding path program 1 times [2022-11-03 02:52:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:11,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121082524] [2022-11-03 02:52:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:11,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:11,437 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:11,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43fb3050-8898-4f9b-9c1e-fe5e06bc1252/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 02:52:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:12,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 02:52:12,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:13,039 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 02:52:13,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:13,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:13,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121082524] [2022-11-03 02:52:13,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121082524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:13,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:13,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:52:13,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312684009] [2022-11-03 02:52:13,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:13,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:52:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:13,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:52:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:52:13,041 INFO L87 Difference]: Start difference. First operand 11752 states and 14939 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)