./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8 --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 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:25,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:25,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:25,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:25,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:25,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:25,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:25,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:25,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:25,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:25,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:25,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:25,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:25,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:25,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:25,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:25,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:25,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:25,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:25,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:25,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:25,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:25,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:25,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:25,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:25,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:25,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:25,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:25,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:25,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:25,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:25,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:25,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:25,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:25,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:25,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:25,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:25,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:25,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:25,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:25,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:25,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:12:25,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:25,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:25,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:25,807 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:25,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:25,808 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:25,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:12:25,808 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:25,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:25,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:12:25,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:12:25,809 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:25,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:12:25,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:12:25,810 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:12:25,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:25,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:12:25,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:25,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:25,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:25,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:25,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:25,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:25,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:25,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:25,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:25,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:25,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:25,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:25,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:25,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:25,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:12:25,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:12:25,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:25,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:25,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:25,818 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2021-11-07 01:12:26,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:26,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:26,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:26,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:26,187 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:26,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-07 01:12:26,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/8e3555d4c/36c787ba450248799814b111424a7fcd/FLAGb95c0f661 [2021-11-07 01:12:27,298 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:27,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-07 01:12:27,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/8e3555d4c/36c787ba450248799814b111424a7fcd/FLAGb95c0f661 [2021-11-07 01:12:27,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/8e3555d4c/36c787ba450248799814b111424a7fcd [2021-11-07 01:12:27,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:27,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:27,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:27,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:27,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:27,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:27" (1/1) ... [2021-11-07 01:12:27,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d74509d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:27, skipping insertion in model container [2021-11-07 01:12:27,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:27" (1/1) ... [2021-11-07 01:12:27,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:27,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:30,529 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-07 01:12:30,537 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-07 01:12:30,538 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-07 01:12:30,540 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-07 01:12:30,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:30,599 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:12:30,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65b54427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:30, skipping insertion in model container [2021-11-07 01:12:30,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:30,601 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:12:30,605 INFO L168 Benchmark]: Toolchain (without parser) took 2888.88 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 68.2 MB in the beginning and 91.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:30,606 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 115.3 MB. Free memory was 93.8 MB in the beginning and 93.7 MB in the end (delta: 69.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:12:30,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2882.47 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 68.0 MB in the beginning and 91.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:30,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 115.3 MB. Free memory was 93.8 MB in the beginning and 93.7 MB in the end (delta: 69.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2882.47 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 68.0 MB in the beginning and 91.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4352]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8 --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 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:33,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:33,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:33,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:33,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:33,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:33,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:33,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:33,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:33,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:33,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:33,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:33,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:33,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:33,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:33,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:33,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:33,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:33,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:33,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:33,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:33,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:33,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:33,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:33,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:33,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:33,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:33,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:33,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:33,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:33,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:33,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:33,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:33,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:33,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:33,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:33,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:33,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:33,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:33,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:33,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:33,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:12:33,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:33,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:33,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:33,919 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:33,919 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:33,920 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:33,920 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:33,920 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:33,920 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:33,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:33,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:33,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:33,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:33,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:33,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:33,926 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:12:33,926 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:12:33,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:33,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:33,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:33,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:33,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:12:33,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:33,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:33,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:33,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:33,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:33,929 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:12:33,929 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:33,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:33,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:33,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:33,930 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_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2021-11-07 01:12:34,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:34,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:34,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:34,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:34,529 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:34,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-07 01:12:34,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/86510fe78/935316bf9df041e69c41ea37fb079505/FLAGee835b821 [2021-11-07 01:12:35,800 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:35,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-07 01:12:35,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/86510fe78/935316bf9df041e69c41ea37fb079505/FLAGee835b821 [2021-11-07 01:12:36,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/data/86510fe78/935316bf9df041e69c41ea37fb079505 [2021-11-07 01:12:36,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:36,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:36,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:36,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:36,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:36,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:36" (1/1) ... [2021-11-07 01:12:36,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d57ed8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:36, skipping insertion in model container [2021-11-07 01:12:36,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:36" (1/1) ... [2021-11-07 01:12:36,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:36,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:38,606 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-07 01:12:38,613 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-07 01:12:38,614 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-07 01:12:38,615 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-07 01:12:38,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:38,681 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:12:38,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:39,241 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-07 01:12:39,242 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-07 01:12:39,243 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-07 01:12:39,243 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-07 01:12:39,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:39,275 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:12:39,649 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-07 01:12:39,650 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-07 01:12:39,650 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-07 01:12:39,651 WARN L228 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_8f40304f-5876-424e-8a40-dcb0470c462b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-07 01:12:39,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:39,819 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:12:39,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39 WrapperNode [2021-11-07 01:12:39,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:39,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:39,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:12:39,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:12:39,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:39,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:40,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:12:40,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:12:40,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:12:40,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:12:40,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:12:40,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:12:40,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:12:40,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (1/1) ... [2021-11-07 01:12:40,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:40,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:12:40,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:12:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:12:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:12:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:12:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:12:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:12:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:12:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:12:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:12:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:12:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:12:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:12:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:12:41,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:12:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:12:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:12:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:12:41,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:12:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:12:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:13:18,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-07 01:13:18,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 01:13:18,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0bv32; [2021-11-07 01:13:18,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0bv32; [2021-11-07 01:13:18,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-07 01:13:18,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:13:18,142 INFO L299 CfgBuilder]: Removed 2074 assume(true) statements. [2021-11-07 01:13:18,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:18 BoogieIcfgContainer [2021-11-07 01:13:18,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:13:18,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:13:18,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:13:18,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:13:18,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:12:36" (1/3) ... [2021-11-07 01:13:18,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66161097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:18, skipping insertion in model container [2021-11-07 01:13:18,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:39" (2/3) ... [2021-11-07 01:13:18,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66161097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:18, skipping insertion in model container [2021-11-07 01:13:18,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:18" (3/3) ... [2021-11-07 01:13:18,159 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-07 01:13:18,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:13:18,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-11-07 01:13:18,253 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:13:18,273 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:13:18,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-11-07 01:13:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 1566 states, 1526 states have (on average 1.2673656618610747) internal successors, (1934), 1565 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:13:18,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:18,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:18,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:13:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1159951444, now seen corresponding path program 1 times [2021-11-07 01:13:18,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:18,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808189876] [2021-11-07 01:13:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:18,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:18,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:18,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:13:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:20,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:21,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:21,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:21,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808189876] [2021-11-07 01:13:21,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808189876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:21,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:21,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:21,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530344157] [2021-11-07 01:13:21,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:21,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:21,341 INFO L87 Difference]: Start difference. First operand has 1566 states, 1526 states have (on average 1.2673656618610747) internal successors, (1934), 1565 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:24,089 INFO L93 Difference]: Finished difference Result 5945 states and 7335 transitions. [2021-11-07 01:13:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:24,092 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 01:13:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:24,147 INFO L225 Difference]: With dead ends: 5945 [2021-11-07 01:13:24,147 INFO L226 Difference]: Without dead ends: 4156 [2021-11-07 01:13:24,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2021-11-07 01:13:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 4060. [2021-11-07 01:13:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 4020 states have (on average 1.1878109452736318) internal successors, (4775), 4059 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 4775 transitions. [2021-11-07 01:13:24,591 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 4775 transitions. Word has length 24 [2021-11-07 01:13:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:24,592 INFO L470 AbstractCegarLoop]: Abstraction has 4060 states and 4775 transitions. [2021-11-07 01:13:24,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 4775 transitions. [2021-11-07 01:13:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:13:24,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:24,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:24,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:24,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:24,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:13:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -258996078, now seen corresponding path program 1 times [2021-11-07 01:13:24,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:24,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69247248] [2021-11-07 01:13:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:24,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:24,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:24,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:24,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:13:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:27,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:27,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:27,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:27,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:27,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69247248] [2021-11-07 01:13:27,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69247248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:27,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:27,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467623068] [2021-11-07 01:13:27,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:27,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:27,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:27,893 INFO L87 Difference]: Start difference. First operand 4060 states and 4775 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:30,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:30,907 INFO L93 Difference]: Finished difference Result 9045 states and 10920 transitions. [2021-11-07 01:13:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:30,908 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 01:13:30,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:30,944 INFO L225 Difference]: With dead ends: 9045 [2021-11-07 01:13:30,944 INFO L226 Difference]: Without dead ends: 5013 [2021-11-07 01:13:30,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-07 01:13:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 4857. [2021-11-07 01:13:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4817 states have (on average 1.2476645214864024) internal successors, (6010), 4856 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 6010 transitions. [2021-11-07 01:13:31,252 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 6010 transitions. Word has length 36 [2021-11-07 01:13:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:31,253 INFO L470 AbstractCegarLoop]: Abstraction has 4857 states and 6010 transitions. [2021-11-07 01:13:31,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 6010 transitions. [2021-11-07 01:13:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:13:31,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:31,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:31,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:13:31,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:31,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:13:31,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 849800372, now seen corresponding path program 1 times [2021-11-07 01:13:31,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:31,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126386202] [2021-11-07 01:13:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:31,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:31,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:31,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:31,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:13:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:33,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:33,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:34,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:34,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:34,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126386202] [2021-11-07 01:13:34,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126386202] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:34,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:34,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:34,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026354742] [2021-11-07 01:13:34,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:34,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:34,552 INFO L87 Difference]: Start difference. First operand 4857 states and 6010 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:37,682 INFO L93 Difference]: Finished difference Result 14266 states and 17236 transitions. [2021-11-07 01:13:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:13:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:37,749 INFO L225 Difference]: With dead ends: 14266 [2021-11-07 01:13:37,750 INFO L226 Difference]: Without dead ends: 9437 [2021-11-07 01:13:37,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2021-11-07 01:13:38,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 9249. [2021-11-07 01:13:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9249 states, 9209 states have (on average 1.2008904332717993) internal successors, (11059), 9248 states have internal predecessors, (11059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9249 states to 9249 states and 11059 transitions. [2021-11-07 01:13:38,565 INFO L78 Accepts]: Start accepts. Automaton has 9249 states and 11059 transitions. Word has length 46 [2021-11-07 01:13:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:38,566 INFO L470 AbstractCegarLoop]: Abstraction has 9249 states and 11059 transitions. [2021-11-07 01:13:38,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9249 states and 11059 transitions. [2021-11-07 01:13:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:13:38,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:38,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:38,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:38,787 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:13:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1502608141, now seen corresponding path program 1 times [2021-11-07 01:13:38,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:38,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158462717] [2021-11-07 01:13:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:38,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:38,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:38,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:38,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:13:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:41,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:41,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:41,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:41,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:41,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158462717] [2021-11-07 01:13:41,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158462717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:41,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:41,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:41,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214605948] [2021-11-07 01:13:41,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:41,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:41,854 INFO L87 Difference]: Start difference. First operand 9249 states and 11059 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:45,794 INFO L93 Difference]: Finished difference Result 34442 states and 41091 transitions. [2021-11-07 01:13:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:13:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:45,931 INFO L225 Difference]: With dead ends: 34442 [2021-11-07 01:13:45,931 INFO L226 Difference]: Without dead ends: 25221 [2021-11-07 01:13:45,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25221 states. [2021-11-07 01:13:47,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25221 to 24985. [2021-11-07 01:13:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24985 states, 24945 states have (on average 1.1938665063138905) internal successors, (29781), 24984 states have internal predecessors, (29781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24985 states to 24985 states and 29781 transitions. [2021-11-07 01:13:47,789 INFO L78 Accepts]: Start accepts. Automaton has 24985 states and 29781 transitions. Word has length 47 [2021-11-07 01:13:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:47,792 INFO L470 AbstractCegarLoop]: Abstraction has 24985 states and 29781 transitions. [2021-11-07 01:13:47,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24985 states and 29781 transitions. [2021-11-07 01:13:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:13:47,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:47,797 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:13:47,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:48,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:48,022 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:13:48,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 128871812, now seen corresponding path program 1 times [2021-11-07 01:13:48,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:48,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520432817] [2021-11-07 01:13:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:48,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:48,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:48,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:48,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:13:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:50,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:50,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:50,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:51,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:51,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520432817] [2021-11-07 01:13:51,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520432817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:51,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:51,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:51,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126668946] [2021-11-07 01:13:51,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:13:51,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:13:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:13:51,350 INFO L87 Difference]: Start difference. First operand 24985 states and 29781 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:53,200 INFO L93 Difference]: Finished difference Result 24985 states and 29781 transitions. [2021-11-07 01:13:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:13:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:13:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:53,276 INFO L225 Difference]: With dead ends: 24985 [2021-11-07 01:13:53,277 INFO L226 Difference]: Without dead ends: 24981 [2021-11-07 01:13:53,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:13:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24981 states. [2021-11-07 01:13:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24981 to 24981. [2021-11-07 01:13:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24981 states, 24943 states have (on average 1.1938018682596319) internal successors, (29777), 24980 states have internal predecessors, (29777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24981 states to 24981 states and 29777 transitions. [2021-11-07 01:13:55,138 INFO L78 Accepts]: Start accepts. Automaton has 24981 states and 29777 transitions. Word has length 49 [2021-11-07 01:13:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:55,138 INFO L470 AbstractCegarLoop]: Abstraction has 24981 states and 29777 transitions. [2021-11-07 01:13:55,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 24981 states and 29777 transitions. [2021-11-07 01:13:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:13:55,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:55,141 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:13:55,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:55,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:55,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:13:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -708106745, now seen corresponding path program 1 times [2021-11-07 01:13:55,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:55,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626439442] [2021-11-07 01:13:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:55,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:55,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:55,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:55,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:13:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:57,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:13:57,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:58,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:13:58,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:58,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626439442] [2021-11-07 01:13:58,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626439442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:58,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:58,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:58,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125901446] [2021-11-07 01:13:58,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:13:58,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:13:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:13:58,660 INFO L87 Difference]: Start difference. First operand 24981 states and 29777 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:00,372 INFO L93 Difference]: Finished difference Result 24981 states and 29777 transitions. [2021-11-07 01:14:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:00,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:14:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:00,443 INFO L225 Difference]: With dead ends: 24981 [2021-11-07 01:14:00,444 INFO L226 Difference]: Without dead ends: 24977 [2021-11-07 01:14:00,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24977 states. [2021-11-07 01:14:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24977 to 24977. [2021-11-07 01:14:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24977 states, 24941 states have (on average 1.1937372198388196) internal successors, (29773), 24976 states have internal predecessors, (29773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24977 states to 24977 states and 29773 transitions. [2021-11-07 01:14:02,110 INFO L78 Accepts]: Start accepts. Automaton has 24977 states and 29773 transitions. Word has length 51 [2021-11-07 01:14:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:02,110 INFO L470 AbstractCegarLoop]: Abstraction has 24977 states and 29773 transitions. [2021-11-07 01:14:02,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 24977 states and 29773 transitions. [2021-11-07 01:14:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 01:14:02,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:02,113 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:14:02,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:14:02,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:02,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1885615350, now seen corresponding path program 1 times [2021-11-07 01:14:02,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:02,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097254635] [2021-11-07 01:14:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:02,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:02,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:14:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:04,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:05,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:05,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:05,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097254635] [2021-11-07 01:14:05,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097254635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:05,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:05,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:05,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616474645] [2021-11-07 01:14:05,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:05,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:05,626 INFO L87 Difference]: Start difference. First operand 24977 states and 29773 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:07,243 INFO L93 Difference]: Finished difference Result 24977 states and 29773 transitions. [2021-11-07 01:14:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:07,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 01:14:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:07,309 INFO L225 Difference]: With dead ends: 24977 [2021-11-07 01:14:07,309 INFO L226 Difference]: Without dead ends: 24973 [2021-11-07 01:14:07,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24973 states. [2021-11-07 01:14:09,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24973 to 24973. [2021-11-07 01:14:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24973 states, 24939 states have (on average 1.1936725610489594) internal successors, (29769), 24972 states have internal predecessors, (29769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24973 states to 24973 states and 29769 transitions. [2021-11-07 01:14:09,180 INFO L78 Accepts]: Start accepts. Automaton has 24973 states and 29769 transitions. Word has length 53 [2021-11-07 01:14:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:09,180 INFO L470 AbstractCegarLoop]: Abstraction has 24973 states and 29769 transitions. [2021-11-07 01:14:09,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 24973 states and 29769 transitions. [2021-11-07 01:14:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:14:09,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:09,183 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:14:09,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:09,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:09,398 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:09,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash 399981709, now seen corresponding path program 1 times [2021-11-07 01:14:09,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:09,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424085007] [2021-11-07 01:14:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:09,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:09,402 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:09,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:14:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:11,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:11,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:12,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:12,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:12,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424085007] [2021-11-07 01:14:12,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424085007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:12,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:12,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:12,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765637998] [2021-11-07 01:14:12,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:12,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:12,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:12,843 INFO L87 Difference]: Start difference. First operand 24973 states and 29769 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:14,875 INFO L93 Difference]: Finished difference Result 24973 states and 29769 transitions. [2021-11-07 01:14:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 01:14:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:14,943 INFO L225 Difference]: With dead ends: 24973 [2021-11-07 01:14:14,943 INFO L226 Difference]: Without dead ends: 24969 [2021-11-07 01:14:14,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24969 states. [2021-11-07 01:14:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24969 to 24969. [2021-11-07 01:14:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24969 states, 24937 states have (on average 1.1936078918875566) internal successors, (29765), 24968 states have internal predecessors, (29765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24969 states to 24969 states and 29765 transitions. [2021-11-07 01:14:16,675 INFO L78 Accepts]: Start accepts. Automaton has 24969 states and 29765 transitions. Word has length 55 [2021-11-07 01:14:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:16,676 INFO L470 AbstractCegarLoop]: Abstraction has 24969 states and 29765 transitions. [2021-11-07 01:14:16,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 24969 states and 29765 transitions. [2021-11-07 01:14:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:14:16,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:16,679 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:14:16,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:16,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2130467472, now seen corresponding path program 1 times [2021-11-07 01:14:16,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:16,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119702131] [2021-11-07 01:14:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:16,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:16,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:16,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:14:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:19,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:20,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:20,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:20,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119702131] [2021-11-07 01:14:20,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119702131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:20,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:20,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:20,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004701304] [2021-11-07 01:14:20,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:20,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:20,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:20,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:20,621 INFO L87 Difference]: Start difference. First operand 24969 states and 29765 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:22,569 INFO L93 Difference]: Finished difference Result 24969 states and 29765 transitions. [2021-11-07 01:14:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:14:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:22,620 INFO L225 Difference]: With dead ends: 24969 [2021-11-07 01:14:22,620 INFO L226 Difference]: Without dead ends: 24965 [2021-11-07 01:14:22,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24965 states. [2021-11-07 01:14:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24965 to 24965. [2021-11-07 01:14:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24965 states, 24935 states have (on average 1.1935432123521155) internal successors, (29761), 24964 states have internal predecessors, (29761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24965 states to 24965 states and 29761 transitions. [2021-11-07 01:14:24,916 INFO L78 Accepts]: Start accepts. Automaton has 24965 states and 29761 transitions. Word has length 57 [2021-11-07 01:14:24,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:24,916 INFO L470 AbstractCegarLoop]: Abstraction has 24965 states and 29761 transitions. [2021-11-07 01:14:24,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 24965 states and 29761 transitions. [2021-11-07 01:14:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:14:24,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:24,918 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:14:24,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:25,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:25,119 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:25,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1320024813, now seen corresponding path program 1 times [2021-11-07 01:14:25,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:25,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170985250] [2021-11-07 01:14:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:25,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:25,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:25,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:14:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:27,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:27,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:28,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:28,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:28,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170985250] [2021-11-07 01:14:28,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170985250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:28,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:28,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:28,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926342537] [2021-11-07 01:14:28,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:28,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:28,534 INFO L87 Difference]: Start difference. First operand 24965 states and 29761 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:30,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:30,866 INFO L93 Difference]: Finished difference Result 24965 states and 29761 transitions. [2021-11-07 01:14:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:30,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:14:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:30,909 INFO L225 Difference]: With dead ends: 24965 [2021-11-07 01:14:30,909 INFO L226 Difference]: Without dead ends: 24961 [2021-11-07 01:14:30,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24961 states. [2021-11-07 01:14:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24961 to 24961. [2021-11-07 01:14:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24961 states, 24933 states have (on average 1.1934785224401396) internal successors, (29757), 24960 states have internal predecessors, (29757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24961 states to 24961 states and 29757 transitions. [2021-11-07 01:14:32,963 INFO L78 Accepts]: Start accepts. Automaton has 24961 states and 29757 transitions. Word has length 59 [2021-11-07 01:14:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:32,963 INFO L470 AbstractCegarLoop]: Abstraction has 24961 states and 29757 transitions. [2021-11-07 01:14:32,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 24961 states and 29757 transitions. [2021-11-07 01:14:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:14:32,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:32,965 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:14:32,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:33,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:33,166 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:33,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1528357866, now seen corresponding path program 1 times [2021-11-07 01:14:33,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:33,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063519060] [2021-11-07 01:14:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:33,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:33,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:33,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:14:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:35,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:35,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:36,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:36,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:36,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063519060] [2021-11-07 01:14:36,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063519060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:36,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:36,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:36,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355263810] [2021-11-07 01:14:36,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:36,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:36,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:36,668 INFO L87 Difference]: Start difference. First operand 24961 states and 29757 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:38,957 INFO L93 Difference]: Finished difference Result 24961 states and 29757 transitions. [2021-11-07 01:14:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:38,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 01:14:38,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:38,996 INFO L225 Difference]: With dead ends: 24961 [2021-11-07 01:14:38,997 INFO L226 Difference]: Without dead ends: 24957 [2021-11-07 01:14:39,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24957 states. [2021-11-07 01:14:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24957 to 24957. [2021-11-07 01:14:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24957 states, 24931 states have (on average 1.1934138221491315) internal successors, (29753), 24956 states have internal predecessors, (29753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24957 states to 24957 states and 29753 transitions. [2021-11-07 01:14:41,214 INFO L78 Accepts]: Start accepts. Automaton has 24957 states and 29753 transitions. Word has length 61 [2021-11-07 01:14:41,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:41,215 INFO L470 AbstractCegarLoop]: Abstraction has 24957 states and 29753 transitions. [2021-11-07 01:14:41,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 24957 states and 29753 transitions. [2021-11-07 01:14:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:14:41,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:41,216 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:14:41,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:14:41,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:41,417 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash 127041433, now seen corresponding path program 1 times [2021-11-07 01:14:41,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:41,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109339213] [2021-11-07 01:14:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:41,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:41,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:41,421 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:41,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:14:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:43,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:43,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:44,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:14:44,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:44,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109339213] [2021-11-07 01:14:44,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109339213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:44,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:44,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:44,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365456240] [2021-11-07 01:14:44,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:44,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:44,907 INFO L87 Difference]: Start difference. First operand 24957 states and 29753 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:47,113 INFO L93 Difference]: Finished difference Result 24957 states and 29753 transitions. [2021-11-07 01:14:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:14:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:47,155 INFO L225 Difference]: With dead ends: 24957 [2021-11-07 01:14:47,155 INFO L226 Difference]: Without dead ends: 24911 [2021-11-07 01:14:47,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:14:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24911 states. [2021-11-07 01:14:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24911 to 12790. [2021-11-07 01:14:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12790 states, 12766 states have (on average 1.1890960363465455) internal successors, (15180), 12789 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12790 states to 12790 states and 15180 transitions. [2021-11-07 01:14:48,738 INFO L78 Accepts]: Start accepts. Automaton has 12790 states and 15180 transitions. Word has length 63 [2021-11-07 01:14:48,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:48,739 INFO L470 AbstractCegarLoop]: Abstraction has 12790 states and 15180 transitions. [2021-11-07 01:14:48,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states and 15180 transitions. [2021-11-07 01:14:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:14:48,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:48,741 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:48,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:48,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,944 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1193067730, now seen corresponding path program 1 times [2021-11-07 01:14:48,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:48,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235192189] [2021-11-07 01:14:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:48,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:48,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:48,948 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:48,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:14:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:51,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:51,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:51,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:52,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:52,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235192189] [2021-11-07 01:14:52,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235192189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:52,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:52,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:52,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356977139] [2021-11-07 01:14:52,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:52,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:52,251 INFO L87 Difference]: Start difference. First operand 12790 states and 15180 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:56,238 INFO L93 Difference]: Finished difference Result 27273 states and 32594 transitions. [2021-11-07 01:14:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:56,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:14:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:56,258 INFO L225 Difference]: With dead ends: 27273 [2021-11-07 01:14:56,259 INFO L226 Difference]: Without dead ends: 14546 [2021-11-07 01:14:56,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14546 states. [2021-11-07 01:14:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14546 to 14410. [2021-11-07 01:14:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14410 states, 14386 states have (on average 1.1999165855693035) internal successors, (17262), 14409 states have internal predecessors, (17262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 17262 transitions. [2021-11-07 01:14:57,697 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 17262 transitions. Word has length 66 [2021-11-07 01:14:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:57,697 INFO L470 AbstractCegarLoop]: Abstraction has 14410 states and 17262 transitions. [2021-11-07 01:14:57,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 17262 transitions. [2021-11-07 01:14:57,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 01:14:57,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:57,700 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 01:14:57,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:57,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:57,903 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:14:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash 301043894, now seen corresponding path program 1 times [2021-11-07 01:14:57,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:57,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973492510] [2021-11-07 01:14:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:57,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:57,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:57,909 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:57,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:15:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:00,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:00,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:15:01,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:15:01,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:01,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973492510] [2021-11-07 01:15:01,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973492510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:01,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:01,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:01,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872770348] [2021-11-07 01:15:01,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:01,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:01,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:01,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:01,455 INFO L87 Difference]: Start difference. First operand 14410 states and 17262 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:05,799 INFO L93 Difference]: Finished difference Result 31971 states and 38633 transitions. [2021-11-07 01:15:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 01:15:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:05,831 INFO L225 Difference]: With dead ends: 31971 [2021-11-07 01:15:05,831 INFO L226 Difference]: Without dead ends: 17624 [2021-11-07 01:15:05,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17624 states. [2021-11-07 01:15:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17624 to 17488. [2021-11-07 01:15:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17488 states, 17464 states have (on average 1.21759047182776) internal successors, (21264), 17487 states have internal predecessors, (21264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17488 states to 17488 states and 21264 transitions. [2021-11-07 01:15:07,625 INFO L78 Accepts]: Start accepts. Automaton has 17488 states and 21264 transitions. Word has length 114 [2021-11-07 01:15:07,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:07,625 INFO L470 AbstractCegarLoop]: Abstraction has 17488 states and 21264 transitions. [2021-11-07 01:15:07,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 17488 states and 21264 transitions. [2021-11-07 01:15:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 01:15:07,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:07,627 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 01:15:07,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:07,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:07,833 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:15:07,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash 999574024, now seen corresponding path program 1 times [2021-11-07 01:15:07,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:07,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908751608] [2021-11-07 01:15:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:07,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:07,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:07,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:07,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:15:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:10,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:15:11,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:15:11,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:11,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908751608] [2021-11-07 01:15:11,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908751608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:11,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:11,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:11,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38274406] [2021-11-07 01:15:11,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:11,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:11,464 INFO L87 Difference]: Start difference. First operand 17488 states and 21264 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:16,059 INFO L93 Difference]: Finished difference Result 38163 states and 46691 transitions. [2021-11-07 01:15:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:16,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-07 01:15:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:16,095 INFO L225 Difference]: With dead ends: 38163 [2021-11-07 01:15:16,095 INFO L226 Difference]: Without dead ends: 20738 [2021-11-07 01:15:16,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20738 states. [2021-11-07 01:15:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20738 to 20602. [2021-11-07 01:15:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20602 states, 20578 states have (on average 1.2295655554475653) internal successors, (25302), 20601 states have internal predecessors, (25302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20602 states to 20602 states and 25302 transitions. [2021-11-07 01:15:18,358 INFO L78 Accepts]: Start accepts. Automaton has 20602 states and 25302 transitions. Word has length 117 [2021-11-07 01:15:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:18,358 INFO L470 AbstractCegarLoop]: Abstraction has 20602 states and 25302 transitions. [2021-11-07 01:15:18,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 20602 states and 25302 transitions. [2021-11-07 01:15:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 01:15:18,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:18,361 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-07 01:15:18,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:15:18,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:18,564 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:15:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash 91207351, now seen corresponding path program 1 times [2021-11-07 01:15:18,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:18,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636893897] [2021-11-07 01:15:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:18,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:18,569 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:18,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:15:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:21,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:15:21,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:15:22,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:15:22,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:22,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636893897] [2021-11-07 01:15:22,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636893897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:22,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:22,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:15:22,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088244454] [2021-11-07 01:15:22,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:15:22,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:15:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:22,615 INFO L87 Difference]: Start difference. First operand 20602 states and 25302 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:15:27,689 INFO L93 Difference]: Finished difference Result 43460 states and 53512 transitions. [2021-11-07 01:15:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:15:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-07 01:15:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:15:27,736 INFO L225 Difference]: With dead ends: 43460 [2021-11-07 01:15:27,736 INFO L226 Difference]: Without dead ends: 22921 [2021-11-07 01:15:27,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:15:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22921 states. [2021-11-07 01:15:30,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22921 to 22785. [2021-11-07 01:15:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22785 states, 22761 states have (on average 1.235095118843636) internal successors, (28112), 22784 states have internal predecessors, (28112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22785 states to 22785 states and 28112 transitions. [2021-11-07 01:15:30,494 INFO L78 Accepts]: Start accepts. Automaton has 22785 states and 28112 transitions. Word has length 157 [2021-11-07 01:15:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:15:30,494 INFO L470 AbstractCegarLoop]: Abstraction has 22785 states and 28112 transitions. [2021-11-07 01:15:30,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:15:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 22785 states and 28112 transitions. [2021-11-07 01:15:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 01:15:30,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:15:30,497 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-07 01:15:30,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 01:15:30,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:15:30,698 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-07 01:15:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:15:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash -665923043, now seen corresponding path program 1 times [2021-11-07 01:15:30,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:15:30,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521843491] [2021-11-07 01:15:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:15:30,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:15:30,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:15:30,702 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:15:30,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f40304f-5876-424e-8a40-dcb0470c462b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:15:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:15:33,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:15:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:15:34,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-07 01:15:36,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:15:36,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521843491] [2021-11-07 01:15:36,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521843491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:36,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:36,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-07 01:15:36,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708128047] [2021-11-07 01:15:36,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 01:15:36,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:15:36,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 01:15:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:15:36,140 INFO L87 Difference]: Start difference. First operand 22785 states and 28112 transitions. Second operand has 17 states, 17 states have (on average 10.588235294117647) internal successors, (180), 17 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)