./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/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_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/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_f62cef1d-f90c-4576-82ea-efce48a5ce23/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 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:51:55,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:51:55,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:51:55,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:51:55,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:51:55,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:51:55,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:51:55,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:51:55,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:51:55,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:51:55,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:51:55,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:51:55,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:51:55,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:51:55,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:51:55,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:51:55,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:51:55,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:51:55,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:51:55,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:51:55,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:51:55,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:51:55,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:51:55,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:51:55,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:51:55,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:51:55,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:51:55,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:51:55,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:51:55,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:51:55,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:51:55,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:51:55,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:51:55,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:51:55,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:51:55,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:51:55,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:51:55,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:51:55,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:51:55,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:51:55,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:51:55,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:51:55,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:51:55,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:51:55,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:51:55,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:51:55,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:51:55,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:51:55,556 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:51:55,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:51:55,557 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:51:55,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:51:55,558 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:51:55,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:51:55,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:51:55,559 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:51:55,559 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:51:55,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:51:55,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:51:55,559 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:51:55,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:51:55,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:51:55,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:51:55,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:51:55,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:51:55,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:51:55,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:51:55,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:51:55,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:51:55,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:51:55,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:51:55,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:51:55,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:51:55,565 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:51:55,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:51:55,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:51:55,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:51:55,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:51:55,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:51:55,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:51:55,566 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-03 02:51:55,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:51:55,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:51:55,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:51:55,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:51:55,901 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:51:55,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-03 02:51:55,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/6303592cd/7a34e1e12bcb46079068b92276693e60/FLAGc7216f65a [2022-11-03 02:51:56,872 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:51:56,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-03 02:51:56,918 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/6303592cd/7a34e1e12bcb46079068b92276693e60/FLAGc7216f65a [2022-11-03 02:51:56,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/6303592cd/7a34e1e12bcb46079068b92276693e60 [2022-11-03 02:51:57,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:51:57,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:51:57,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:51:57,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:51:57,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:51:57,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:51:56" (1/1) ... [2022-11-03 02:51:57,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256bc309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:57, skipping insertion in model container [2022-11-03 02:51:57,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:51:56" (1/1) ... [2022-11-03 02:51:57,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:51:57,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:51:58,392 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-03 02:51:58,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:51:58,428 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:51:58,780 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-03 02:51:58,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:51:58,911 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:51:58,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58 WrapperNode [2022-11-03 02:51:58,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:51:58,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:51:58,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:51:58,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:51:58,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:58,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,113 INFO L138 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2776 [2022-11-03 02:51:59,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:51:59,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:51:59,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:51:59,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:51:59,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,268 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:51:59,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:51:59,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:51:59,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:51:59,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (1/1) ... [2022-11-03 02:51:59,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:51:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:59,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:51:59,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:51:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:51:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 02:51:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:51:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:51:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:51:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:51:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:51:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:51:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:51:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-03 02:51:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-03 02:51:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:51:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:51:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:51:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:51:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:51:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:51:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:51:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:51:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-03 02:51:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-03 02:51:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:51:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:51:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:51:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:51:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-03 02:51:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-03 02:51:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:51:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 02:51:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 02:51:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 02:51:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 02:51:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:51:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:51:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:51:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:51:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:51:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:51:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 02:51:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 02:51:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:51:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-03 02:51:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-03 02:51:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-03 02:51:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-03 02:51:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:51:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:51:59,396 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:51:59,396 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-03 02:51:59,397 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-03 02:51:59,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:51:59,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:51:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:51:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:51:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:51:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:51:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:51:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:51:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 02:51:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-03 02:51:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:51:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:51:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-03 02:51:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-03 02:51:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-03 02:51:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-03 02:51:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:51:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 02:51:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 02:51:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:51:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 02:51:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 02:51:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-03 02:51:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-03 02:51:59,403 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:51:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:51:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:51:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:51:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:51:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:51:59,404 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:51:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:51:59,405 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:51:59,405 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:51:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:51:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:51:59,406 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:51:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:51:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:51:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 02:51:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 02:51:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 02:51:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 02:51:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-03 02:51:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-03 02:51:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:51:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:51:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:51:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:51:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:51:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-03 02:51:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-03 02:51:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 02:51:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 02:52:00,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:52:00,022 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:52:02,757 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:52:03,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:52:03,847 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:52:03,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:52:03 BoogieIcfgContainer [2022-11-03 02:52:03,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:52:03,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:52:03,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:52:03,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:52:03,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:51:56" (1/3) ... [2022-11-03 02:52:03,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b51baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:52:03, skipping insertion in model container [2022-11-03 02:52:03,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:58" (2/3) ... [2022-11-03 02:52:03,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b51baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:52:03, skipping insertion in model container [2022-11-03 02:52:03,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:52:03" (3/3) ... [2022-11-03 02:52:03,873 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-03 02:52:03,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:52:03,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:52:03,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:52:04,009 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;@6c117981, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:52:04,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:52:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 666 states, 414 states have (on average 1.391304347826087) internal successors, (576), 441 states have internal predecessors, (576), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-03 02:52:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 02:52:04,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:04,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:04,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:04,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1442132297, now seen corresponding path program 1 times [2022-11-03 02:52:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:04,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606677914] [2022-11-03 02:52:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:52:04,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:04,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606677914] [2022-11-03 02:52:04,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606677914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:04,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:04,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110215314] [2022-11-03 02:52:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:04,712 INFO L87 Difference]: Start difference. First operand has 666 states, 414 states have (on average 1.391304347826087) internal successors, (576), 441 states have internal predecessors, (576), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:52:06,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:08,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:09,205 INFO L93 Difference]: Finished difference Result 1323 states and 1964 transitions. [2022-11-03 02:52:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2022-11-03 02:52:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:09,226 INFO L225 Difference]: With dead ends: 1323 [2022-11-03 02:52:09,227 INFO L226 Difference]: Without dead ends: 638 [2022-11-03 02:52:09,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:09,237 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 5 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:09,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2605 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 360 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:52:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-03 02:52:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2022-11-03 02:52:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 395 states have (on average 1.369620253164557) internal successors, (541), 419 states have internal predecessors, (541), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-03 02:52:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 939 transitions. [2022-11-03 02:52:09,394 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 939 transitions. Word has length 45 [2022-11-03 02:52:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:09,400 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 939 transitions. [2022-11-03 02:52:09,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:52:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 939 transitions. [2022-11-03 02:52:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 02:52:09,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:09,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:52:09,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:09,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2138506828, now seen corresponding path program 1 times [2022-11-03 02:52:09,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821571022] [2022-11-03 02:52:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:52:09,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:09,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821571022] [2022-11-03 02:52:09,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821571022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:09,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:09,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288285666] [2022-11-03 02:52:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:09,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:09,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:09,771 INFO L87 Difference]: Start difference. First operand 638 states and 939 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:52:11,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:13,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:15,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:16,862 INFO L93 Difference]: Finished difference Result 1019 states and 1559 transitions. [2022-11-03 02:52:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:16,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 47 [2022-11-03 02:52:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:16,870 INFO L225 Difference]: With dead ends: 1019 [2022-11-03 02:52:16,871 INFO L226 Difference]: Without dead ends: 1017 [2022-11-03 02:52:16,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:16,873 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 599 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 215 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:16,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 3397 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 411 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 02:52:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-03 02:52:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 640. [2022-11-03 02:52:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 397 states have (on average 1.3677581863979849) internal successors, (543), 421 states have internal predecessors, (543), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-03 02:52:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 941 transitions. [2022-11-03 02:52:16,928 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 941 transitions. Word has length 47 [2022-11-03 02:52:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:16,929 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 941 transitions. [2022-11-03 02:52:16,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:52:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 941 transitions. [2022-11-03 02:52:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 02:52:16,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:16,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:16,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:52:16,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash -730061150, now seen corresponding path program 1 times [2022-11-03 02:52:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:16,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386915486] [2022-11-03 02:52:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:52:17,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:17,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386915486] [2022-11-03 02:52:17,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386915486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:17,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:17,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264363667] [2022-11-03 02:52:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:17,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:17,278 INFO L87 Difference]: Start difference. First operand 640 states and 941 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 02:52:20,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:22,048 INFO L93 Difference]: Finished difference Result 1648 states and 2484 transitions. [2022-11-03 02:52:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:52:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2022-11-03 02:52:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:22,057 INFO L225 Difference]: With dead ends: 1648 [2022-11-03 02:52:22,057 INFO L226 Difference]: Without dead ends: 1021 [2022-11-03 02:52:22,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:22,068 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 1460 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:22,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1587 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:52:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-11-03 02:52:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 641. [2022-11-03 02:52:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 398 states have (on average 1.3668341708542713) internal successors, (544), 422 states have internal predecessors, (544), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-03 02:52:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 942 transitions. [2022-11-03 02:52:22,167 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 942 transitions. Word has length 55 [2022-11-03 02:52:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:22,169 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 942 transitions. [2022-11-03 02:52:22,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-03 02:52:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 942 transitions. [2022-11-03 02:52:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 02:52:22,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:22,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:22,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:52:22,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:22,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:22,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1343388579, now seen corresponding path program 1 times [2022-11-03 02:52:22,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:22,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974504194] [2022-11-03 02:52:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:52:22,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:22,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974504194] [2022-11-03 02:52:22,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974504194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:22,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:22,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:22,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609105981] [2022-11-03 02:52:22,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:22,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:22,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:22,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:22,510 INFO L87 Difference]: Start difference. First operand 641 states and 942 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:52:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:29,134 INFO L93 Difference]: Finished difference Result 1634 states and 2554 transitions. [2022-11-03 02:52:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:52:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2022-11-03 02:52:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:29,144 INFO L225 Difference]: With dead ends: 1634 [2022-11-03 02:52:29,144 INFO L226 Difference]: Without dead ends: 1632 [2022-11-03 02:52:29,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:52:29,146 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 1380 mSDsluCounter, 4593 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 5986 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:29,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 5986 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:52:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-11-03 02:52:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 643. [2022-11-03 02:52:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 399 states have (on average 1.3659147869674186) internal successors, (545), 422 states have internal predecessors, (545), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-11-03 02:52:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 945 transitions. [2022-11-03 02:52:29,217 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 945 transitions. Word has length 56 [2022-11-03 02:52:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:29,217 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 945 transitions. [2022-11-03 02:52:29,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:52:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 945 transitions. [2022-11-03 02:52:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:52:29,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:29,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:29,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:52:29,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:29,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 728390868, now seen corresponding path program 1 times [2022-11-03 02:52:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:29,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726930932] [2022-11-03 02:52:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:52:29,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:29,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726930932] [2022-11-03 02:52:29,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726930932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:29,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:29,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875955058] [2022-11-03 02:52:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:29,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:29,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:29,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:29,459 INFO L87 Difference]: Start difference. First operand 643 states and 945 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:52:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:30,701 INFO L93 Difference]: Finished difference Result 1285 states and 1882 transitions. [2022-11-03 02:52:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 80 [2022-11-03 02:52:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:30,709 INFO L225 Difference]: With dead ends: 1285 [2022-11-03 02:52:30,709 INFO L226 Difference]: Without dead ends: 655 [2022-11-03 02:52:30,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:30,716 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 900 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:30,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 835 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:52:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-03 02:52:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-11-03 02:52:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 405 states have (on average 1.3580246913580247) internal successors, (550), 428 states have internal predecessors, (550), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-03 02:52:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 954 transitions. [2022-11-03 02:52:30,818 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 954 transitions. Word has length 80 [2022-11-03 02:52:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:30,820 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 954 transitions. [2022-11-03 02:52:30,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:52:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 954 transitions. [2022-11-03 02:52:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-03 02:52:30,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:30,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:30,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:52:30,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash 364068058, now seen corresponding path program 1 times [2022-11-03 02:52:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:30,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760400478] [2022-11-03 02:52:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:52:31,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760400478] [2022-11-03 02:52:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760400478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:31,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:31,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501469656] [2022-11-03 02:52:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:31,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:31,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:31,101 INFO L87 Difference]: Start difference. First operand 655 states and 954 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:52:32,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:38,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:40,340 INFO L93 Difference]: Finished difference Result 2431 states and 3741 transitions. [2022-11-03 02:52:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:40,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 82 [2022-11-03 02:52:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:40,350 INFO L225 Difference]: With dead ends: 2431 [2022-11-03 02:52:40,351 INFO L226 Difference]: Without dead ends: 1801 [2022-11-03 02:52:40,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:52:40,354 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 2479 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:40,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 3537 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 02:52:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-11-03 02:52:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 658. [2022-11-03 02:52:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 408 states have (on average 1.357843137254902) internal successors, (554), 431 states have internal predecessors, (554), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-11-03 02:52:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 958 transitions. [2022-11-03 02:52:40,479 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 958 transitions. Word has length 82 [2022-11-03 02:52:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:40,480 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 958 transitions. [2022-11-03 02:52:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 02:52:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 958 transitions. [2022-11-03 02:52:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:52:40,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:40,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:40,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:52:40,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:40,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash 902472394, now seen corresponding path program 1 times [2022-11-03 02:52:40,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:40,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064090332] [2022-11-03 02:52:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:40,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:52:40,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:40,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064090332] [2022-11-03 02:52:40,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064090332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:40,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387683486] [2022-11-03 02:52:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:40,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:40,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:40,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:40,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:52:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:41,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:52:41,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:52:41,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:52:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:52:41,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387683486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:52:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2067025777] [2022-11-03 02:52:41,897 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-03 02:52:41,897 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:52:41,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:52:41,906 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:52:41,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:52:42,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:42,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:42,478 INFO L244 Elim1Store]: Index analysis took 143 ms [2022-11-03 02:52:44,945 INFO L356 Elim1Store]: treesize reduction 1134, result has 27.6 percent of original size [2022-11-03 02:52:44,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 29 select indices, 29 select index equivalence classes, 415 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 30 case distinctions, treesize of input 158 treesize of output 530 [2022-11-03 02:52:45,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:45,662 INFO L244 Elim1Store]: Index analysis took 307 ms [2022-11-03 02:52:49,795 INFO L356 Elim1Store]: treesize reduction 1776, result has 21.5 percent of original size [2022-11-03 02:52:49,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 33 select indices, 33 select index equivalence classes, 441 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 119 case distinctions, treesize of input 190 treesize of output 613 [2022-11-03 02:52:51,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:52:51,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:52:52,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:52,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:52,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:52,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 499 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 97 [2022-11-03 02:52:52,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:52,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:52,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 528 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:52:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:53,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:53,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 32 select indices, 32 select index equivalence classes, 499 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 97 [2022-11-03 02:52:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:52:53,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 528 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2022-11-03 02:54:13,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:54:13,977 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:54:13,981 INFO L158 Benchmark]: Toolchain (without parser) took 136976.85ms. Allocated memory was 130.0MB in the beginning and 748.7MB in the end (delta: 618.7MB). Free memory was 85.8MB in the beginning and 338.3MB in the end (delta: -252.4MB). Peak memory consumption was 497.3MB. Max. memory is 16.1GB. [2022-11-03 02:54:13,981 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 52.8MB in the beginning and 52.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:54:13,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1904.20ms. Allocated memory was 130.0MB in the beginning and 188.7MB in the end (delta: 58.7MB). Free memory was 85.6MB in the beginning and 96.5MB in the end (delta: -10.9MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-11-03 02:54:13,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 200.52ms. Allocated memory is still 188.7MB. Free memory was 96.5MB in the beginning and 129.3MB in the end (delta: -32.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-03 02:54:13,982 INFO L158 Benchmark]: Boogie Preprocessor took 182.59ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 112.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 02:54:13,983 INFO L158 Benchmark]: RCFGBuilder took 4558.19ms. Allocated memory was 188.7MB in the beginning and 350.2MB in the end (delta: 161.5MB). Free memory was 112.6MB in the beginning and 195.9MB in the end (delta: -83.3MB). Peak memory consumption was 173.5MB. Max. memory is 16.1GB. [2022-11-03 02:54:13,983 INFO L158 Benchmark]: TraceAbstraction took 130121.90ms. Allocated memory was 350.2MB in the beginning and 748.7MB in the end (delta: 398.5MB). Free memory was 195.9MB in the beginning and 338.3MB in the end (delta: -142.4MB). Peak memory consumption was 387.4MB. Max. memory is 16.1GB. [2022-11-03 02:54:13,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 52.8MB in the beginning and 52.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1904.20ms. Allocated memory was 130.0MB in the beginning and 188.7MB in the end (delta: 58.7MB). Free memory was 85.6MB in the beginning and 96.5MB in the end (delta: -10.9MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 200.52ms. Allocated memory is still 188.7MB. Free memory was 96.5MB in the beginning and 129.3MB in the end (delta: -32.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 182.59ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 112.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 4558.19ms. Allocated memory was 188.7MB in the beginning and 350.2MB in the end (delta: 161.5MB). Free memory was 112.6MB in the beginning and 195.9MB in the end (delta: -83.3MB). Peak memory consumption was 173.5MB. Max. memory is 16.1GB. * TraceAbstraction took 130121.90ms. Allocated memory was 350.2MB in the beginning and 748.7MB in the end (delta: 398.5MB). Free memory was 195.9MB in the beginning and 338.3MB in the end (delta: -142.4MB). Peak memory consumption was 387.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:54:14,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/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_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/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_f62cef1d-f90c-4576-82ea-efce48a5ce23/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 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:54:16,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:54:16,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:54:16,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:54:16,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:54:16,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:54:16,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:54:16,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:54:16,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:54:16,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:54:16,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:54:16,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:54:16,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:54:16,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:54:16,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:54:16,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:54:16,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:54:16,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:54:16,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:54:16,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:54:16,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:54:16,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:54:16,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:54:16,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:54:16,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:54:16,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:54:16,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:54:16,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:54:16,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:54:16,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:54:16,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:54:16,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:54:16,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:54:16,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:54:16,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:54:16,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:54:16,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:54:16,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:54:16,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:54:16,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:54:16,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:54:16,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:54:16,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:54:16,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:54:16,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:54:16,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:54:16,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:54:16,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:54:16,920 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:54:16,921 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:54:16,921 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:54:16,921 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:54:16,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:54:16,923 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:54:16,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:54:16,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:54:16,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:54:16,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:54:16,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:54:16,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:54:16,926 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:54:16,927 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:54:16,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:54:16,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:54:16,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:54:16,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:54:16,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:54:16,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:54:16,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:54:16,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:54:16,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:54:16,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:54:16,930 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:54:16,930 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:54:16,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:54:16,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:54:16,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:54:16,931 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-11-03 02:54:17,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:54:17,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:54:17,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:54:17,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:54:17,453 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:54:17,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-03 02:54:17,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/6b0a0c628/acb41adbeb2c4365b1a61698efd4b38e/FLAG25d8ca499 [2022-11-03 02:54:18,705 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:54:18,707 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-03 02:54:18,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/6b0a0c628/acb41adbeb2c4365b1a61698efd4b38e/FLAG25d8ca499 [2022-11-03 02:54:19,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/data/6b0a0c628/acb41adbeb2c4365b1a61698efd4b38e [2022-11-03 02:54:19,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:54:19,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:54:19,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:54:19,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:54:19,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:54:19,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:54:19" (1/1) ... [2022-11-03 02:54:19,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad58c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:19, skipping insertion in model container [2022-11-03 02:54:19,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:54:19" (1/1) ... [2022-11-03 02:54:19,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:54:19,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:54:20,798 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-03 02:54:20,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:54:20,869 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:54:20,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:54:21,293 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-03 02:54:21,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:54:21,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:54:21,710 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_f62cef1d-f90c-4576-82ea-efce48a5ce23/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-11-03 02:54:21,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:54:21,915 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:54:21,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21 WrapperNode [2022-11-03 02:54:21,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:54:21,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:54:21,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:54:21,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:54:21,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,193 INFO L138 Inliner]: procedures = 170, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2691 [2022-11-03 02:54:22,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:54:22,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:54:22,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:54:22,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:54:22,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:54:22,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:54:22,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:54:22,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:54:22,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (1/1) ... [2022-11-03 02:54:22,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:54:22,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:22,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:54:22,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:54:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:54:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:54:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 02:54:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:54:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:54:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:54:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:54:22,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:54:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:54:22,518 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:54:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-03 02:54:22,518 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-03 02:54:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:54:22,518 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:54:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 02:54:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 02:54:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:54:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:54:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:54:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:54:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-11-03 02:54:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-11-03 02:54:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:54:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:54:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:54:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:54:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-03 02:54:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-03 02:54:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:54:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:54:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:54:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:54:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 02:54:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 02:54:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 02:54:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 02:54:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:54:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:54:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:54:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:54:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:54:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:54:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 02:54:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 02:54:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:54:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-03 02:54:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-03 02:54:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-03 02:54:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-03 02:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:54:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:54:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-03 02:54:22,530 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-03 02:54:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:54:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:54:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:54:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:54:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:54:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:54:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:54:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:54:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:54:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 02:54:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 02:54:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:54:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:54:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-03 02:54:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-03 02:54:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-03 02:54:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-11-03 02:54:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-03 02:54:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-03 02:54:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:54:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:54:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:54:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:54:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:54:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 02:54:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 02:54:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:54:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 02:54:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 02:54:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-03 02:54:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-03 02:54:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:54:22,539 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:54:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:54:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:54:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:54:22,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:54:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:54:22,542 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:54:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:54:22,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:54:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:54:22,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:54:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:54:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:54:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:54:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:54:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:54:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 02:54:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 02:54:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-03 02:54:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-03 02:54:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-03 02:54:22,545 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-03 02:54:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:54:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:54:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:54:22,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:54:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-03 02:54:22,549 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-03 02:54:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 02:54:22,552 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 02:54:23,350 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:54:23,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:54:47,430 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:54:47,468 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:54:47,471 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:54:47,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:54:47 BoogieIcfgContainer [2022-11-03 02:54:47,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:54:47,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:54:47,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:54:47,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:54:47,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:54:19" (1/3) ... [2022-11-03 02:54:47,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8759b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:54:47, skipping insertion in model container [2022-11-03 02:54:47,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:54:21" (2/3) ... [2022-11-03 02:54:47,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8759b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:54:47, skipping insertion in model container [2022-11-03 02:54:47,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:54:47" (3/3) ... [2022-11-03 02:54:47,494 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-11-03 02:54:47,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:54:47,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:54:47,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:54:47,664 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;@2c70c05c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:54:47,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:54:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-11-03 02:54:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:54:47,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:47,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:47,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1312205542, now seen corresponding path program 1 times [2022-11-03 02:54:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:47,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022625668] [2022-11-03 02:54:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:47,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:47,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:47,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:47,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:54:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:48,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:54:48,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:48,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:48,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:48,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022625668] [2022-11-03 02:54:48,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022625668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:48,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:48,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:54:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364715834] [2022-11-03 02:54:48,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:48,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:54:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:54:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:48,789 INFO L87 Difference]: Start difference. First operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:54:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:49,206 INFO L93 Difference]: Finished difference Result 1924 states and 2874 transitions. [2022-11-03 02:54:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:54:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-03 02:54:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:49,236 INFO L225 Difference]: With dead ends: 1924 [2022-11-03 02:54:49,237 INFO L226 Difference]: Without dead ends: 925 [2022-11-03 02:54:49,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:54:49,252 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 1410 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:49,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1416 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:54:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-03 02:54:49,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 925. [2022-11-03 02:54:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4193548387096775) internal successors, (968), 706 states have internal predecessors, (968), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-03 02:54:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1366 transitions. [2022-11-03 02:54:49,550 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1366 transitions. Word has length 59 [2022-11-03 02:54:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:49,554 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1366 transitions. [2022-11-03 02:54:49,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:54:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1366 transitions. [2022-11-03 02:54:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 02:54:49,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:49,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:49,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:49,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:49,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1735852264, now seen corresponding path program 1 times [2022-11-03 02:54:49,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:49,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248660867] [2022-11-03 02:54:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:49,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:49,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:49,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:49,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:54:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:50,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:50,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:54:50,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:50,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248660867] [2022-11-03 02:54:50,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248660867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:50,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:50,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:54:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723780264] [2022-11-03 02:54:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:50,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:54:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:54:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:50,424 INFO L87 Difference]: Start difference. First operand 925 states and 1366 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:54:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:50,656 INFO L93 Difference]: Finished difference Result 1833 states and 2709 transitions. [2022-11-03 02:54:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:54:50,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-11-03 02:54:50,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:50,672 INFO L225 Difference]: With dead ends: 1833 [2022-11-03 02:54:50,672 INFO L226 Difference]: Without dead ends: 925 [2022-11-03 02:54:50,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:50,678 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 1 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:50,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4090 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-03 02:54:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 925. [2022-11-03 02:54:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4178885630498534) internal successors, (967), 706 states have internal predecessors, (967), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-11-03 02:54:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1365 transitions. [2022-11-03 02:54:50,779 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1365 transitions. Word has length 59 [2022-11-03 02:54:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:50,780 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1365 transitions. [2022-11-03 02:54:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:54:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1365 transitions. [2022-11-03 02:54:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:54:50,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:50,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:50,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:51,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:51,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1026212091, now seen corresponding path program 1 times [2022-11-03 02:54:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:51,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163826454] [2022-11-03 02:54:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:51,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:51,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:51,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:54:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:51,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:54:51,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:54:52,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:52,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:52,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163826454] [2022-11-03 02:54:52,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163826454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:52,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:52,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:54:52,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106843829] [2022-11-03 02:54:52,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:52,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:54:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:54:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:54:52,129 INFO L87 Difference]: Start difference. First operand 925 states and 1365 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:54:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:53,346 INFO L93 Difference]: Finished difference Result 1872 states and 2757 transitions. [2022-11-03 02:54:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:54:53,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2022-11-03 02:54:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:53,353 INFO L225 Difference]: With dead ends: 1872 [2022-11-03 02:54:53,354 INFO L226 Difference]: Without dead ends: 953 [2022-11-03 02:54:53,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:54:53,358 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 39 mSDsluCounter, 9519 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 10886 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:53,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 10886 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:54:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-11-03 02:54:53,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 947. [2022-11-03 02:54:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 697 states have (on average 1.4103299856527978) internal successors, (983), 722 states have internal predecessors, (983), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-03 02:54:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1386 transitions. [2022-11-03 02:54:53,416 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1386 transitions. Word has length 62 [2022-11-03 02:54:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:53,417 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1386 transitions. [2022-11-03 02:54:53,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:54:53,417 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1386 transitions. [2022-11-03 02:54:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:54:53,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:53,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:53,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:53,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:53,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash 12706885, now seen corresponding path program 1 times [2022-11-03 02:54:53,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:53,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305011016] [2022-11-03 02:54:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:53,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:53,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:53,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:54:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:54,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:54:54,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:54:54,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:54,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:54,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305011016] [2022-11-03 02:54:54,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305011016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:54,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:54,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:54:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156401098] [2022-11-03 02:54:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:54:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:54:54,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:54,197 INFO L87 Difference]: Start difference. First operand 947 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:54:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:54,926 INFO L93 Difference]: Finished difference Result 1461 states and 2206 transitions. [2022-11-03 02:54:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:54:54,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-11-03 02:54:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:54,937 INFO L225 Difference]: With dead ends: 1461 [2022-11-03 02:54:54,937 INFO L226 Difference]: Without dead ends: 1459 [2022-11-03 02:54:54,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:54,944 INFO L413 NwaCegarLoop]: 2173 mSDtfsCounter, 925 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 5348 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:54,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 5348 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:54:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-11-03 02:54:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 949. [2022-11-03 02:54:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 699 states have (on average 1.4091559370529327) internal successors, (985), 724 states have internal predecessors, (985), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-03 02:54:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1388 transitions. [2022-11-03 02:54:55,053 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1388 transitions. Word has length 65 [2022-11-03 02:54:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:55,053 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1388 transitions. [2022-11-03 02:54:55,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:54:55,054 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1388 transitions. [2022-11-03 02:54:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:54:55,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:55,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:55,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:55,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:55,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:55,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash 384734306, now seen corresponding path program 1 times [2022-11-03 02:54:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:55,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209870828] [2022-11-03 02:54:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:55,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:55,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:55,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:54:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:55,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:54:55,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:54:55,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:55,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:55,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209870828] [2022-11-03 02:54:55,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209870828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:55,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:55,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:54:55,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135747527] [2022-11-03 02:54:55,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:55,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:54:55,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:54:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:55,827 INFO L87 Difference]: Start difference. First operand 949 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:54:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:56,608 INFO L93 Difference]: Finished difference Result 1464 states and 2209 transitions. [2022-11-03 02:54:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:54:56,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2022-11-03 02:54:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:56,618 INFO L225 Difference]: With dead ends: 1464 [2022-11-03 02:54:56,618 INFO L226 Difference]: Without dead ends: 1462 [2022-11-03 02:54:56,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:56,620 INFO L413 NwaCegarLoop]: 2179 mSDtfsCounter, 925 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 5356 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:56,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 5356 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:54:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-03 02:54:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 949. [2022-11-03 02:54:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 699 states have (on average 1.4091559370529327) internal successors, (985), 724 states have internal predecessors, (985), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-03 02:54:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1388 transitions. [2022-11-03 02:54:56,746 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1388 transitions. Word has length 66 [2022-11-03 02:54:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:56,748 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1388 transitions. [2022-11-03 02:54:56,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-03 02:54:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1388 transitions. [2022-11-03 02:54:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:54:56,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:56,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:56,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:56,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:56,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash -683622511, now seen corresponding path program 1 times [2022-11-03 02:54:56,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:56,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244835102] [2022-11-03 02:54:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:56,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:56,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:56,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:56,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:54:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:57,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:57,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:54:57,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:57,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244835102] [2022-11-03 02:54:57,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244835102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:57,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:57,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:54:57,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652712048] [2022-11-03 02:54:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:57,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:54:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:54:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:57,830 INFO L87 Difference]: Start difference. First operand 949 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:55:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:01,844 INFO L93 Difference]: Finished difference Result 2371 states and 3551 transitions. [2022-11-03 02:55:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:55:01,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 75 [2022-11-03 02:55:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:01,853 INFO L225 Difference]: With dead ends: 2371 [2022-11-03 02:55:01,853 INFO L226 Difference]: Without dead ends: 1463 [2022-11-03 02:55:01,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:55:01,858 INFO L413 NwaCegarLoop]: 1854 mSDtfsCounter, 1844 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:01,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1982 Valid, 2809 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 02:55:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-11-03 02:55:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 950. [2022-11-03 02:55:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 700 states have (on average 1.4085714285714286) internal successors, (986), 725 states have internal predecessors, (986), 201 states have call successors, (201), 47 states have call predecessors, (201), 48 states have return successors, (202), 199 states have call predecessors, (202), 201 states have call successors, (202) [2022-11-03 02:55:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1389 transitions. [2022-11-03 02:55:01,988 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1389 transitions. Word has length 75 [2022-11-03 02:55:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:01,989 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1389 transitions. [2022-11-03 02:55:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:55:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1389 transitions. [2022-11-03 02:55:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:55:01,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:01,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:02,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 02:55:02,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:02,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash -761624014, now seen corresponding path program 1 times [2022-11-03 02:55:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:02,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638923152] [2022-11-03 02:55:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:02,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:02,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:02,216 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:02,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:55:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:55:02,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:55:02,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:55:02,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:02,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638923152] [2022-11-03 02:55:02,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638923152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:02,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:02,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:55:02,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645320702] [2022-11-03 02:55:02,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:02,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:02,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:55:02,812 INFO L87 Difference]: Start difference. First operand 950 states and 1389 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:55:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:03,987 INFO L93 Difference]: Finished difference Result 1470 states and 2217 transitions. [2022-11-03 02:55:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:55:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-03 02:55:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:03,997 INFO L225 Difference]: With dead ends: 1470 [2022-11-03 02:55:03,997 INFO L226 Difference]: Without dead ends: 1468 [2022-11-03 02:55:03,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:55:03,999 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 1314 mSDsluCounter, 4842 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 7022 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:04,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 7022 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:55:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-11-03 02:55:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 952. [2022-11-03 02:55:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 701 states have (on average 1.4079885877318117) internal successors, (987), 726 states have internal predecessors, (987), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-03 02:55:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1392 transitions. [2022-11-03 02:55:04,209 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1392 transitions. Word has length 77 [2022-11-03 02:55:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:04,211 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1392 transitions. [2022-11-03 02:55:04,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:55:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1392 transitions. [2022-11-03 02:55:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:55:04,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:04,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:04,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:55:04,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:04,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1650819158, now seen corresponding path program 1 times [2022-11-03 02:55:04,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:04,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905714712] [2022-11-03 02:55:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:04,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:04,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:04,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:04,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:55:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:04,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:55:04,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:55:05,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:55:05,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:05,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905714712] [2022-11-03 02:55:05,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905714712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:05,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:05,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:55:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708943089] [2022-11-03 02:55:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:05,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:55:05,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:55:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:55:05,304 INFO L87 Difference]: Start difference. First operand 952 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:55:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:05,894 INFO L93 Difference]: Finished difference Result 1863 states and 2739 transitions. [2022-11-03 02:55:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:55:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-03 02:55:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:05,916 INFO L225 Difference]: With dead ends: 1863 [2022-11-03 02:55:05,916 INFO L226 Difference]: Without dead ends: 952 [2022-11-03 02:55:05,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:55:05,920 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 1310 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:05,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 1401 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:55:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-03 02:55:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2022-11-03 02:55:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 701 states have (on average 1.406562054208274) internal successors, (986), 726 states have internal predecessors, (986), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-03 02:55:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1391 transitions. [2022-11-03 02:55:06,114 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1391 transitions. Word has length 85 [2022-11-03 02:55:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:06,115 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1391 transitions. [2022-11-03 02:55:06,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:55:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1391 transitions. [2022-11-03 02:55:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:55:06,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:06,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:06,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:55:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:06,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash 262548836, now seen corresponding path program 1 times [2022-11-03 02:55:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:06,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849306275] [2022-11-03 02:55:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:06,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:06,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:06,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:06,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:55:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:55:06,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:55:07,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:55:07,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:07,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849306275] [2022-11-03 02:55:07,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849306275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:07,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:07,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:55:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483625797] [2022-11-03 02:55:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:55:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:55:07,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:55:07,182 INFO L87 Difference]: Start difference. First operand 952 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:55:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:12,037 INFO L93 Difference]: Finished difference Result 2379 states and 3559 transitions. [2022-11-03 02:55:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:55:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-11-03 02:55:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:12,052 INFO L225 Difference]: With dead ends: 2379 [2022-11-03 02:55:12,052 INFO L226 Difference]: Without dead ends: 1468 [2022-11-03 02:55:12,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:55:12,059 INFO L413 NwaCegarLoop]: 1929 mSDtfsCounter, 1828 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:12,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 2879 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:55:12,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-11-03 02:55:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 956. [2022-11-03 02:55:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 705 states have (on average 1.4056737588652481) internal successors, (991), 730 states have internal predecessors, (991), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2022-11-03 02:55:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1396 transitions. [2022-11-03 02:55:12,283 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1396 transitions. Word has length 87 [2022-11-03 02:55:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:12,283 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1396 transitions. [2022-11-03 02:55:12,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:55:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1396 transitions. [2022-11-03 02:55:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:55:12,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:12,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:12,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:55:12,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:12,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1147636327, now seen corresponding path program 1 times [2022-11-03 02:55:12,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:12,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905565020] [2022-11-03 02:55:12,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:12,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:12,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:12,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:12,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:55:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:12,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:55:12,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:13,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2022-11-03 02:55:13,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2022-11-03 02:55:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:55:13,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:55:13,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:13,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905565020] [2022-11-03 02:55:13,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905565020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:13,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:55:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330399670] [2022-11-03 02:55:13,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:55:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:55:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:55:13,674 INFO L87 Difference]: Start difference. First operand 956 states and 1396 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:55:22,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:24,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:25,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:27,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:29,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:42,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:44,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:46,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:55,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:02,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:04,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:05,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:07,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:09,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:19,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:20,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:22,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:29,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:31,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:33,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:38,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:40,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:44,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:05,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:06,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:09,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:12,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:15,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:16,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:19,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:20,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:28,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:38,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:39,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:42,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:45,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:47,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:49,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:51,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:53,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:55,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:57,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:02,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:04,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:06,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:10,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:12,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:15,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:18,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:22,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:26,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:28,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:30,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:37,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:39,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:41,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:58:42,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:42,432 INFO L93 Difference]: Finished difference Result 6215 states and 9696 transitions. [2022-11-03 02:58:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:58:42,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 90 [2022-11-03 02:58:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:42,463 INFO L225 Difference]: With dead ends: 6215 [2022-11-03 02:58:42,463 INFO L226 Difference]: Without dead ends: 5300 [2022-11-03 02:58:42,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:58:42,469 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 5309 mSDsluCounter, 21177 mSDsCounter, 0 mSdLazyCounter, 5301 mSolverCounterSat, 2028 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 24374 SdHoareTripleChecker+Invalid, 7357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2028 IncrementalHoareTripleChecker+Valid, 5301 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:42,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5656 Valid, 24374 Invalid, 7357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2028 Valid, 5301 Invalid, 28 Unknown, 0 Unchecked, 206.1s Time] [2022-11-03 02:58:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5300 states. [2022-11-03 02:58:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5300 to 1594. [2022-11-03 02:58:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1181 states have (on average 1.4191363251481794) internal successors, (1676), 1220 states have internal predecessors, (1676), 327 states have call successors, (327), 84 states have call predecessors, (327), 85 states have return successors, (338), 317 states have call predecessors, (338), 327 states have call successors, (338) [2022-11-03 02:58:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2341 transitions. [2022-11-03 02:58:42,992 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2341 transitions. Word has length 90 [2022-11-03 02:58:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:42,993 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2341 transitions. [2022-11-03 02:58:42,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:58:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2341 transitions. [2022-11-03 02:58:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-03 02:58:42,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:42,998 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:43,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:43,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:43,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:43,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash 211258770, now seen corresponding path program 1 times [2022-11-03 02:58:43,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:43,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832177888] [2022-11-03 02:58:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:43,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:43,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:43,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:43,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:58:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:43,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:58:43,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:58:43,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:43,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:43,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832177888] [2022-11-03 02:58:43,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832177888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:43,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:43,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:58:43,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2880252] [2022-11-03 02:58:43,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:43,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:58:43,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:58:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:58:43,921 INFO L87 Difference]: Start difference. First operand 1594 states and 2341 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:58:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:45,322 INFO L93 Difference]: Finished difference Result 2837 states and 4331 transitions. [2022-11-03 02:58:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:58:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2022-11-03 02:58:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:45,340 INFO L225 Difference]: With dead ends: 2837 [2022-11-03 02:58:45,341 INFO L226 Difference]: Without dead ends: 2835 [2022-11-03 02:58:45,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:58:45,342 INFO L413 NwaCegarLoop]: 2295 mSDtfsCounter, 1809 mSDsluCounter, 5581 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:45,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 7876 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:58:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-11-03 02:58:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1590. [2022-11-03 02:58:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1178 states have (on average 1.4193548387096775) internal successors, (1672), 1216 states have internal predecessors, (1672), 326 states have call successors, (326), 84 states have call predecessors, (326), 85 states have return successors, (337), 316 states have call predecessors, (337), 326 states have call successors, (337) [2022-11-03 02:58:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2335 transitions. [2022-11-03 02:58:45,802 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2335 transitions. Word has length 99 [2022-11-03 02:58:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:45,803 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2335 transitions. [2022-11-03 02:58:45,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:58:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2335 transitions. [2022-11-03 02:58:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 02:58:45,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:45,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:45,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:46,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:46,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash 720371343, now seen corresponding path program 1 times [2022-11-03 02:58:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:46,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874318712] [2022-11-03 02:58:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:46,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:46,025 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:46,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:58:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:46,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:58:46,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:58:46,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:46,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:46,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874318712] [2022-11-03 02:58:46,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874318712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:46,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:46,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:58:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613586172] [2022-11-03 02:58:46,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:58:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:58:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:58:46,671 INFO L87 Difference]: Start difference. First operand 1590 states and 2335 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:58:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:48,426 INFO L93 Difference]: Finished difference Result 4511 states and 6851 transitions. [2022-11-03 02:58:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:58:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-11-03 02:58:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:48,443 INFO L225 Difference]: With dead ends: 4511 [2022-11-03 02:58:48,443 INFO L226 Difference]: Without dead ends: 2962 [2022-11-03 02:58:48,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:58:48,449 INFO L413 NwaCegarLoop]: 2104 mSDtfsCounter, 1191 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 5546 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:48,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 5546 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:58:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2022-11-03 02:58:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1592. [2022-11-03 02:58:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1180 states have (on average 1.4177966101694914) internal successors, (1673), 1218 states have internal predecessors, (1673), 326 states have call successors, (326), 84 states have call predecessors, (326), 85 states have return successors, (337), 316 states have call predecessors, (337), 326 states have call successors, (337) [2022-11-03 02:58:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2336 transitions. [2022-11-03 02:58:49,057 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2336 transitions. Word has length 121 [2022-11-03 02:58:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:49,057 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2336 transitions. [2022-11-03 02:58:49,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:58:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2336 transitions. [2022-11-03 02:58:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-03 02:58:49,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:49,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:49,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:49,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:49,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash -584513274, now seen corresponding path program 1 times [2022-11-03 02:58:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131501570] [2022-11-03 02:58:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:49,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:49,303 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:49,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:58:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:58:50,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-03 02:58:50,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:50,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:50,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131501570] [2022-11-03 02:58:50,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131501570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:50,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:50,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:58:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100877020] [2022-11-03 02:58:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:50,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:58:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:58:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:58:50,326 INFO L87 Difference]: Start difference. First operand 1592 states and 2336 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:58:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:53,025 INFO L93 Difference]: Finished difference Result 4699 states and 7131 transitions. [2022-11-03 02:58:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:58:53,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-11-03 02:58:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:53,040 INFO L225 Difference]: With dead ends: 4699 [2022-11-03 02:58:53,040 INFO L226 Difference]: Without dead ends: 3148 [2022-11-03 02:58:53,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:58:53,045 INFO L413 NwaCegarLoop]: 2283 mSDtfsCounter, 1376 mSDsluCounter, 8200 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 10483 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:53,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 10483 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:58:53,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2022-11-03 02:58:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 1602. [2022-11-03 02:58:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1188 states have (on average 1.414983164983165) internal successors, (1681), 1226 states have internal predecessors, (1681), 326 states have call successors, (326), 84 states have call predecessors, (326), 87 states have return successors, (343), 318 states have call predecessors, (343), 326 states have call successors, (343) [2022-11-03 02:58:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2350 transitions. [2022-11-03 02:58:53,612 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2350 transitions. Word has length 138 [2022-11-03 02:58:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:53,613 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2350 transitions. [2022-11-03 02:58:53,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:58:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2350 transitions. [2022-11-03 02:58:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-03 02:58:53,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:53,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:53,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:53,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:53,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1623663578, now seen corresponding path program 2 times [2022-11-03 02:58:53,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:53,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118836747] [2022-11-03 02:58:53,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:58:53,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:53,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:53,842 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:53,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:58:54,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 02:58:54,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:58:54,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:58:54,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-03 02:58:54,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:58:54,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:54,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118836747] [2022-11-03 02:58:54,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118836747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:58:54,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:58:54,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:58:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823381230] [2022-11-03 02:58:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:58:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:58:54,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:58:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:58:54,496 INFO L87 Difference]: Start difference. First operand 1602 states and 2350 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:58:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:54,890 INFO L93 Difference]: Finished difference Result 3165 states and 4673 transitions. [2022-11-03 02:58:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:58:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-11-03 02:58:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:54,900 INFO L225 Difference]: With dead ends: 3165 [2022-11-03 02:58:54,901 INFO L226 Difference]: Without dead ends: 1604 [2022-11-03 02:58:54,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:58:54,906 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 0 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:54,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2711 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:58:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-11-03 02:58:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1602. [2022-11-03 02:58:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1188 states have (on average 1.40993265993266) internal successors, (1675), 1226 states have internal predecessors, (1675), 326 states have call successors, (326), 84 states have call predecessors, (326), 87 states have return successors, (343), 318 states have call predecessors, (343), 326 states have call successors, (343) [2022-11-03 02:58:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2344 transitions. [2022-11-03 02:58:55,346 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2344 transitions. Word has length 141 [2022-11-03 02:58:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:55,346 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2344 transitions. [2022-11-03 02:58:55,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:58:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2344 transitions. [2022-11-03 02:58:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 02:58:55,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:55,356 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:55,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:55,557 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1010266095, now seen corresponding path program 1 times [2022-11-03 02:58:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403868487] [2022-11-03 02:58:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:55,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:55,560 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:55,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62cef1d-f90c-4576-82ea-efce48a5ce23/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:59:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:59:00,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 165 conjunts are in the unsatisfiable core [2022-11-03 02:59:00,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:01,062 INFO L356 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-03 02:59:01,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-03 02:59:01,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-03 02:59:01,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-03 02:59:02,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:02,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-03 02:59:04,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:04,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:04,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:04,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:04,832 INFO L244 Elim1Store]: Index analysis took 131 ms [2022-11-03 02:59:05,233 INFO L356 Elim1Store]: treesize reduction 206, result has 16.3 percent of original size [2022-11-03 02:59:05,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 60 [2022-11-03 02:59:06,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:06,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:06,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-03 02:59:10,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:10,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:10,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:10,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:10,829 INFO L244 Elim1Store]: Index analysis took 183 ms [2022-11-03 02:59:10,862 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 02:59:10,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2022-11-03 02:59:12,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:12,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:12,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:12,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 29 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 81 [2022-11-03 02:59:37,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:37,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:37,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:37,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:37,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:37,484 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-03 02:59:37,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 43 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 112 treesize of output 148 [2022-11-03 02:59:37,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 02:59:37,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:59:42,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 02:59:42,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-03 02:59:42,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:42,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:42,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:59:42,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:42,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:59:42,473 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-03 02:59:42,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 94 treesize of output 114 [2022-11-03 03:00:02,462 WARN L234 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 128 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:05,112 INFO L244 Elim1Store]: Index analysis took 1106 ms [2022-11-03 03:00:05,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:05,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:06,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:06,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:06,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:00:07,507 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:00:07,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 47 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 106 [2022-11-03 03:00:07,824 INFO L244 Elim1Store]: Index analysis took 188 ms [2022-11-03 03:00:07,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:00:08,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:00:08,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:08,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:00:08,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:00:08,914 INFO L356 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2022-11-03 03:00:08,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 86 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 96 case distinctions, treesize of input 206 treesize of output 282 [2022-11-03 03:00:09,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:00:09,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:00:09,209 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 03:00:09,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 47 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 104 [2022-11-03 03:00:27,428 WARN L234 SmtUtils]: Spent 6.52s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:49,946 WARN L234 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:17,963 WARN L234 SmtUtils]: Spent 10.89s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:19,962 INFO L244 Elim1Store]: Index analysis took 1095 ms [2022-11-03 03:01:21,399 INFO L356 Elim1Store]: treesize reduction 480, result has 0.2 percent of original size [2022-11-03 03:01:21,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 84 disjoint index pairs (out of 276 index pairs), introduced 25 new quantified variables, introduced 240 case distinctions, treesize of input 255 treesize of output 358 [2022-11-03 03:01:22,012 INFO L244 Elim1Store]: Index analysis took 157 ms [2022-11-03 03:01:22,065 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:01:22,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 48 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 100 [2022-11-03 03:01:22,462 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:01:22,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 48 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 100 [2022-11-03 03:01:23,226 INFO L244 Elim1Store]: Index analysis took 513 ms [2022-11-03 03:01:23,281 INFO L356 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2022-11-03 03:01:23,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 204 [2022-11-03 03:01:23,719 INFO L244 Elim1Store]: Index analysis took 231 ms [2022-11-03 03:01:23,766 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:01:23,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 41 [2022-11-03 03:01:24,155 INFO L244 Elim1Store]: Index analysis took 208 ms [2022-11-03 03:01:24,202 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:01:24,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 41 [2022-11-03 03:01:24,270 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:24,356 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:24,440 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:39,480 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:55,307 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:55,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:56,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:56,223 INFO L244 Elim1Store]: Index analysis took 732 ms [2022-11-03 03:01:56,270 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-03 03:01:56,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 64 [2022-11-03 03:01:56,337 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:57,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:57,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:57,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:57,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:57,551 INFO L244 Elim1Store]: Index analysis took 1065 ms [2022-11-03 03:01:58,688 INFO L356 Elim1Store]: treesize reduction 640, result has 0.2 percent of original size [2022-11-03 03:01:58,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 16 disjoint index pairs (out of 276 index pairs), introduced 25 new quantified variables, introduced 240 case distinctions, treesize of input 265 treesize of output 336 [2022-11-03 03:01:58,935 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:59,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:59,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:59,149 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 03:01:59,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 164 [2022-11-03 03:01:59,209 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:01:59,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:01:59,675 INFO L244 Elim1Store]: Index analysis took 362 ms [2022-11-03 03:02:01,723 INFO L356 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2022-11-03 03:02:01,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 69 [2022-11-03 03:02:01,763 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:02:02,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:02:02,128 INFO L244 Elim1Store]: Index analysis took 195 ms [2022-11-03 03:02:03,911 INFO L356 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-11-03 03:02:03,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 148 treesize of output 148 [2022-11-03 03:02:04,040 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:02:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:02:04,937 INFO L244 Elim1Store]: Index analysis took 760 ms [2022-11-03 03:02:08,804 INFO L356 Elim1Store]: treesize reduction 102, result has 59.5 percent of original size [2022-11-03 03:02:08,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 239 treesize of output 328 [2022-11-03 03:02:08,888 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-11-03 03:03:55,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1029 treesize of output 1009 [2022-11-03 03:04:09,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 750 treesize of output 708