./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs --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 32bit --witnessprinter.graph.data.programhash d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:20,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:20,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:20,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:20,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:20,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:20,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:20,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:20,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:20,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:20,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:20,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:20,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:20,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:20,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:20,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:20,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:20,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:20,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:20,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:20,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:20,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:20,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:20,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:20,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:20,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:20,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:20,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:20,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:20,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:20,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:20,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:20,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:20,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:20,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:20,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:20,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:20,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:20,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:20,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:20,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:20,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:44:20,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:20,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:20,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:20,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:20,605 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:20,605 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:20,605 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:20,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:44:20,606 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:20,606 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:20,606 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:44:20,606 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:44:20,607 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:20,607 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:44:20,607 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:44:20,607 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:44:20,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:20,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:44:20,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:44:20,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:44:20,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:20,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:20,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:20,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:20,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:20,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:44:20,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:20,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:20,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:20,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:20,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:20,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:20,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:20,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:20,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:20,616 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:44:20,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:44:20,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:20,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:20,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:20,618 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_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 [2021-11-19 14:44:20,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:20,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:20,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:20,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:20,912 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:20,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2021-11-19 14:44:20,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/7fc652826/dd539bb439cb4b5d8bccbdd7db6df974/FLAG47bfaa1fd [2021-11-19 14:44:21,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:21,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2021-11-19 14:44:21,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/7fc652826/dd539bb439cb4b5d8bccbdd7db6df974/FLAG47bfaa1fd [2021-11-19 14:44:21,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/7fc652826/dd539bb439cb4b5d8bccbdd7db6df974 [2021-11-19 14:44:21,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:21,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:21,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:21,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:21,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:21,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:21" (1/1) ... [2021-11-19 14:44:21,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1020dd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:21, skipping insertion in model container [2021-11-19 14:44:21,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:21" (1/1) ... [2021-11-19 14:44:21,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:21,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:22,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2021-11-19 14:44:22,476 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:22,493 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) [2021-11-19 14:44:22,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@281c0d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:22, skipping insertion in model container [2021-11-19 14:44:22,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:22,495 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:44:22,497 INFO L158 Benchmark]: Toolchain (without parser) took 615.87ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 78.7MB in the beginning and 121.7MB in the end (delta: -43.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:44:22,498 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory was 65.2MB in the beginning and 65.1MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:44:22,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.06ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 78.7MB in the beginning and 121.7MB in the end (delta: -43.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 14:44:22,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory was 65.2MB in the beginning and 65.1MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.06ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 78.7MB in the beginning and 121.7MB in the end (delta: -43.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2802]: 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_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs --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 32bit --witnessprinter.graph.data.programhash d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:24,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:24,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:24,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:24,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:24,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:24,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:24,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:24,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:24,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:24,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:24,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:24,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:24,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:24,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:24,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:24,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:24,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:24,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:24,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:24,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:24,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:24,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:24,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:24,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:24,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:24,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:24,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:24,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:24,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:24,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:24,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:24,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:24,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:24,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:24,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:24,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:24,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:24,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:24,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:24,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:24,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:44:24,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:24,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:24,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:24,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:24,943 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:24,944 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:24,944 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:24,944 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:24,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:24,944 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:24,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:24,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:44:24,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:44:24,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:24,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:24,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:24,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:24,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:24,948 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:44:24,949 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:44:24,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:44:24,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:24,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:24,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:24,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:24,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:44:24,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:24,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:24,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:24,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:24,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:24,951 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:44:24,951 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:44:24,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:24,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:24,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:24,953 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_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 [2021-11-19 14:44:25,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:25,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:25,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:25,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:25,455 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:25,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2021-11-19 14:44:25,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/a56188d59/ec0fc0e5f3bb4c0ca983dc713874d88a/FLAG6eb394220 [2021-11-19 14:44:26,361 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:26,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2021-11-19 14:44:26,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/a56188d59/ec0fc0e5f3bb4c0ca983dc713874d88a/FLAG6eb394220 [2021-11-19 14:44:26,526 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/data/a56188d59/ec0fc0e5f3bb4c0ca983dc713874d88a [2021-11-19 14:44:26,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:26,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:26,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:26,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:26,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:26,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:26" (1/1) ... [2021-11-19 14:44:26,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334130ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:26, skipping insertion in model container [2021-11-19 14:44:26,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:26" (1/1) ... [2021-11-19 14:44:26,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:26,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:27,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2021-11-19 14:44:27,370 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:27,384 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:44:27,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:27,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2021-11-19 14:44:27,570 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:27,589 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:44:27,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2021-11-19 14:44:27,757 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:27,793 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:44:27,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27 WrapperNode [2021-11-19 14:44:27,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:27,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:27,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:44:27,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:44:27,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:27,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:27,946 INFO L137 Inliner]: procedures = 97, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 808 [2021-11-19 14:44:27,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:44:27,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:44:27,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:44:27,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:44:27,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:27,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:27,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:27,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:28,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:28,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:28,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:28,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:44:28,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:44:28,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:44:28,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:44:28,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (1/1) ... [2021-11-19 14:44:28,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:28,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:44:28,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:44:28,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:44:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:44:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-11-19 14:44:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-11-19 14:44:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-19 14:44:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-19 14:44:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-19 14:44:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-19 14:44:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 14:44:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 14:44:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-19 14:44:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-19 14:44:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 14:44:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 14:44:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-11-19 14:44:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-11-19 14:44:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 14:44:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 14:44:28,177 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 14:44:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 14:44:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 14:44:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 14:44:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-19 14:44:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-19 14:44:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 14:44:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 14:44:28,178 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 14:44:28,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 14:44:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 14:44:28,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 14:44:28,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:44:28,180 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-19 14:44:28,180 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-19 14:44:28,180 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 14:44:28,180 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 14:44:28,180 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 14:44:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 14:44:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 14:44:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 14:44:28,181 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 14:44:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 14:44:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 14:44:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 14:44:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-19 14:44:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-19 14:44:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 14:44:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 14:44:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 14:44:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 14:44:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 14:44:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 14:44:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-11-19 14:44:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-11-19 14:44:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:44:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:44:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 14:44:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 14:44:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-11-19 14:44:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-11-19 14:44:28,485 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:44:28,488 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:44:30,023 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:44:30,037 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:44:30,038 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:44:30,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:30 BoogieIcfgContainer [2021-11-19 14:44:30,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:44:30,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:44:30,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:44:30,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:44:30,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:44:26" (1/3) ... [2021-11-19 14:44:30,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734625d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:30, skipping insertion in model container [2021-11-19 14:44:30,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:27" (2/3) ... [2021-11-19 14:44:30,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734625d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:30, skipping insertion in model container [2021-11-19 14:44:30,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:30" (3/3) ... [2021-11-19 14:44:30,050 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product24.cil.c [2021-11-19 14:44:30,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:44:30,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:44:30,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:44:30,121 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 [2021-11-19 14:44:30,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:44:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 440 states have (on average 1.6590909090909092) internal successors, (730), 458 states have internal predecessors, (730), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-19 14:44:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 14:44:30,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:30,173 INFO L514 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] [2021-11-19 14:44:30,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1178526646, now seen corresponding path program 1 times [2021-11-19 14:44:30,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:30,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618967311] [2021-11-19 14:44:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:30,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:30,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:30,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:44:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:30,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:44:30,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:30,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:31,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:31,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618967311] [2021-11-19 14:44:31,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618967311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:31,159 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:31,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:44:31,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267271424] [2021-11-19 14:44:31,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:31,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:44:31,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:44:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:44:31,217 INFO L87 Difference]: Start difference. First operand has 572 states, 440 states have (on average 1.6590909090909092) internal successors, (730), 458 states have internal predecessors, (730), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:44:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:31,500 INFO L93 Difference]: Finished difference Result 1139 states and 1874 transitions. [2021-11-19 14:44:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:31,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 63 [2021-11-19 14:44:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:31,540 INFO L225 Difference]: With dead ends: 1139 [2021-11-19 14:44:31,540 INFO L226 Difference]: Without dead ends: 567 [2021-11-19 14:44:31,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:44:31,559 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 16 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3662 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:31,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 3662 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:44:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-19 14:44:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-11-19 14:44:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 436 states have (on average 1.6376146788990826) internal successors, (714), 453 states have internal predecessors, (714), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-19 14:44:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 919 transitions. [2021-11-19 14:44:31,668 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 919 transitions. Word has length 63 [2021-11-19 14:44:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:31,669 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 919 transitions. [2021-11-19 14:44:31,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:44:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 919 transitions. [2021-11-19 14:44:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 14:44:31,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:31,675 INFO L514 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, 1, 1] [2021-11-19 14:44:31,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:31,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:31,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 18160608, now seen corresponding path program 1 times [2021-11-19 14:44:31,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:31,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105512341] [2021-11-19 14:44:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:31,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:31,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:31,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:31,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:44:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:32,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:44:32,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:32,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:32,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:32,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105512341] [2021-11-19 14:44:32,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105512341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:32,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:32,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 14:44:32,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228793431] [2021-11-19 14:44:32,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:44:32,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:44:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:44:32,849 INFO L87 Difference]: Start difference. First operand 567 states and 919 transitions. Second operand has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:44:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:33,101 INFO L93 Difference]: Finished difference Result 1122 states and 1830 transitions. [2021-11-19 14:44:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:44:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 68 [2021-11-19 14:44:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:33,110 INFO L225 Difference]: With dead ends: 1122 [2021-11-19 14:44:33,111 INFO L226 Difference]: Without dead ends: 576 [2021-11-19 14:44:33,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:44:33,116 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 213 mSDsluCounter, 4492 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:33,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 5395 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:44:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-19 14:44:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2021-11-19 14:44:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 444 states have (on average 1.6373873873873874) internal successors, (727), 462 states have internal predecessors, (727), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 99 states have call predecessors, (103), 102 states have call successors, (103) [2021-11-19 14:44:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 933 transitions. [2021-11-19 14:44:33,170 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 933 transitions. Word has length 68 [2021-11-19 14:44:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:33,171 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 933 transitions. [2021-11-19 14:44:33,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:44:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 933 transitions. [2021-11-19 14:44:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 14:44:33,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:33,175 INFO L514 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, 1, 1, 1] [2021-11-19 14:44:33,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:33,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:33,391 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1084654138, now seen corresponding path program 1 times [2021-11-19 14:44:33,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:33,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428825258] [2021-11-19 14:44:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:33,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:33,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:33,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:33,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:44:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:33,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:44:33,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:33,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:34,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:34,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428825258] [2021-11-19 14:44:34,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428825258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:34,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:34,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:44:34,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213536249] [2021-11-19 14:44:34,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:34,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:44:34,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:44:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:44:34,069 INFO L87 Difference]: Start difference. First operand 576 states and 933 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:44:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:34,365 INFO L93 Difference]: Finished difference Result 1178 states and 1921 transitions. [2021-11-19 14:44:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2021-11-19 14:44:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:34,374 INFO L225 Difference]: With dead ends: 1178 [2021-11-19 14:44:34,375 INFO L226 Difference]: Without dead ends: 590 [2021-11-19 14:44:34,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:44:34,380 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 243 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:34,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 1738 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:44:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-19 14:44:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 581. [2021-11-19 14:44:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 449 states have (on average 1.581291759465479) internal successors, (710), 466 states have internal predecessors, (710), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-19 14:44:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 915 transitions. [2021-11-19 14:44:34,420 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 915 transitions. Word has length 69 [2021-11-19 14:44:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:34,421 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 915 transitions. [2021-11-19 14:44:34,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 14:44:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 915 transitions. [2021-11-19 14:44:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 14:44:34,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:34,425 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-19 14:44:34,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:34,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:34,640 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash -336255905, now seen corresponding path program 1 times [2021-11-19 14:44:34,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:34,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404998805] [2021-11-19 14:44:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:34,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:34,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:34,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:34,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:44:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:34,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:44:34,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:35,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:35,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:35,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404998805] [2021-11-19 14:44:35,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404998805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:35,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:35,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 14:44:35,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423521441] [2021-11-19 14:44:35,484 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:35,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:44:35,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:44:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:44:35,486 INFO L87 Difference]: Start difference. First operand 581 states and 915 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:44:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:35,696 INFO L93 Difference]: Finished difference Result 1120 states and 1784 transitions. [2021-11-19 14:44:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:44:35,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 71 [2021-11-19 14:44:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:35,707 INFO L225 Difference]: With dead ends: 1120 [2021-11-19 14:44:35,707 INFO L226 Difference]: Without dead ends: 569 [2021-11-19 14:44:35,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:44:35,720 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 86 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 6033 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:35,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 6033 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:44:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-19 14:44:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 560. [2021-11-19 14:44:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 445 states have internal predecessors, (682), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-19 14:44:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 887 transitions. [2021-11-19 14:44:35,770 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 887 transitions. Word has length 71 [2021-11-19 14:44:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:35,770 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 887 transitions. [2021-11-19 14:44:35,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 14:44:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 887 transitions. [2021-11-19 14:44:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 14:44:35,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:35,773 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:35,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:35,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:35,987 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1440767219, now seen corresponding path program 1 times [2021-11-19 14:44:35,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:35,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934446800] [2021-11-19 14:44:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:35,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:35,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:36,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:44:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:36,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:44:36,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:36,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:37,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:37,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934446800] [2021-11-19 14:44:37,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934446800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:37,002 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:37,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 14:44:37,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295306493] [2021-11-19 14:44:37,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:37,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:44:37,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:44:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:44:37,005 INFO L87 Difference]: Start difference. First operand 560 states and 887 transitions. Second operand has 13 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:44:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:37,361 INFO L93 Difference]: Finished difference Result 1089 states and 1739 transitions. [2021-11-19 14:44:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:44:37,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 74 [2021-11-19 14:44:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:37,369 INFO L225 Difference]: With dead ends: 1089 [2021-11-19 14:44:37,370 INFO L226 Difference]: Without dead ends: 565 [2021-11-19 14:44:37,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:44:37,375 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 59 mSDsluCounter, 7546 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 8390 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:37,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 8390 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:44:37,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-11-19 14:44:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 562. [2021-11-19 14:44:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 430 states have (on average 1.5883720930232559) internal successors, (683), 447 states have internal predecessors, (683), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-19 14:44:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 888 transitions. [2021-11-19 14:44:37,405 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 888 transitions. Word has length 74 [2021-11-19 14:44:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:37,406 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 888 transitions. [2021-11-19 14:44:37,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 14:44:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 888 transitions. [2021-11-19 14:44:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:44:37,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:37,408 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:37,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:37,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:37,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2070657031, now seen corresponding path program 1 times [2021-11-19 14:44:37,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:37,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924832954] [2021-11-19 14:44:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:37,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:37,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:37,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:44:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:37,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:44:37,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:38,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:38,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:38,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924832954] [2021-11-19 14:44:38,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924832954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:38,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:38,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 14:44:38,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668228698] [2021-11-19 14:44:38,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:38,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:44:38,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:44:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:44:38,581 INFO L87 Difference]: Start difference. First operand 562 states and 888 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-19 14:44:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:40,150 INFO L93 Difference]: Finished difference Result 2109 states and 3418 transitions. [2021-11-19 14:44:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:44:40,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 75 [2021-11-19 14:44:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:40,170 INFO L225 Difference]: With dead ends: 2109 [2021-11-19 14:44:40,171 INFO L226 Difference]: Without dead ends: 1590 [2021-11-19 14:44:40,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:44:40,176 INFO L933 BasicCegarLoop]: 1131 mSDtfsCounter, 2227 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:40,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2227 Valid, 2586 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 14:44:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-19 14:44:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1464. [2021-11-19 14:44:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1134 states have (on average 1.6164021164021165) internal successors, (1833), 1168 states have internal predecessors, (1833), 259 states have call successors, (259), 73 states have call predecessors, (259), 70 states have return successors, (272), 238 states have call predecessors, (272), 256 states have call successors, (272) [2021-11-19 14:44:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2364 transitions. [2021-11-19 14:44:40,275 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2364 transitions. Word has length 75 [2021-11-19 14:44:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:40,275 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2364 transitions. [2021-11-19 14:44:40,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-19 14:44:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2364 transitions. [2021-11-19 14:44:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-19 14:44:40,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:40,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:40,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:40,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:40,497 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -782717716, now seen corresponding path program 1 times [2021-11-19 14:44:40,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:40,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091521181] [2021-11-19 14:44:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:40,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:40,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:40,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:40,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:44:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:40,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:44:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 14:44:41,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:44:41,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:41,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091521181] [2021-11-19 14:44:41,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091521181] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:44:41,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:44:41,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:44:41,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251290864] [2021-11-19 14:44:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:41,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:44:41,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:44:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:44:41,629 INFO L87 Difference]: Start difference. First operand 1464 states and 2364 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:42,722 INFO L93 Difference]: Finished difference Result 2897 states and 4797 transitions. [2021-11-19 14:44:42,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:42,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2021-11-19 14:44:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:42,738 INFO L225 Difference]: With dead ends: 2897 [2021-11-19 14:44:42,738 INFO L226 Difference]: Without dead ends: 1476 [2021-11-19 14:44:42,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:44:42,753 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 796 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:42,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 2127 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:44:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-19 14:44:42,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-19 14:44:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1143 states have (on average 1.6115485564304461) internal successors, (1842), 1177 states have internal predecessors, (1842), 259 states have call successors, (259), 76 states have call predecessors, (259), 73 states have return successors, (275), 238 states have call predecessors, (275), 256 states have call successors, (275) [2021-11-19 14:44:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2376 transitions. [2021-11-19 14:44:42,853 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2376 transitions. Word has length 130 [2021-11-19 14:44:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:42,855 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 2376 transitions. [2021-11-19 14:44:42,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2376 transitions. [2021-11-19 14:44:42,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 14:44:42,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:42,883 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:42,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:43,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:43,091 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:43,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1975297937, now seen corresponding path program 1 times [2021-11-19 14:44:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:43,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631158810] [2021-11-19 14:44:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:43,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:43,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:43,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:44:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:43,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:44:43,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 14:44:43,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 14:44:44,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:44,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631158810] [2021-11-19 14:44:44,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631158810] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:44:44,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:44:44,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:44:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416143527] [2021-11-19 14:44:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:44,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:44:44,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:44:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:44:44,292 INFO L87 Difference]: Start difference. First operand 1476 states and 2376 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:45,310 INFO L93 Difference]: Finished difference Result 2924 states and 4818 transitions. [2021-11-19 14:44:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2021-11-19 14:44:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:45,325 INFO L225 Difference]: With dead ends: 2924 [2021-11-19 14:44:45,326 INFO L226 Difference]: Without dead ends: 1491 [2021-11-19 14:44:45,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:44:45,338 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 809 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:45,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2128 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:44:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-11-19 14:44:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1491. [2021-11-19 14:44:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1155 states have (on average 1.6051948051948053) internal successors, (1854), 1189 states have internal predecessors, (1854), 259 states have call successors, (259), 79 states have call predecessors, (259), 76 states have return successors, (278), 238 states have call predecessors, (278), 256 states have call successors, (278) [2021-11-19 14:44:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2391 transitions. [2021-11-19 14:44:45,419 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2391 transitions. Word has length 133 [2021-11-19 14:44:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:45,420 INFO L470 AbstractCegarLoop]: Abstraction has 1491 states and 2391 transitions. [2021-11-19 14:44:45,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2391 transitions. [2021-11-19 14:44:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-19 14:44:45,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:45,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:45,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:45,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:45,645 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash 295036936, now seen corresponding path program 1 times [2021-11-19 14:44:45,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:45,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396731031] [2021-11-19 14:44:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:45,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:45,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:45,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:45,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:44:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:45,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:44:45,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:44:46,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 14:44:46,695 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:46,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396731031] [2021-11-19 14:44:46,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396731031] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:44:46,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:44:46,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:44:46,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488530262] [2021-11-19 14:44:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:46,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:44:46,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:44:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:44:46,697 INFO L87 Difference]: Start difference. First operand 1491 states and 2391 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:47,745 INFO L93 Difference]: Finished difference Result 2957 states and 4845 transitions. [2021-11-19 14:44:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:47,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-11-19 14:44:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:47,759 INFO L225 Difference]: With dead ends: 2957 [2021-11-19 14:44:47,759 INFO L226 Difference]: Without dead ends: 1509 [2021-11-19 14:44:47,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:44:47,772 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 797 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:47,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 2128 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:44:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-19 14:44:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2021-11-19 14:44:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1170 states have (on average 1.5974358974358975) internal successors, (1869), 1204 states have internal predecessors, (1869), 259 states have call successors, (259), 82 states have call predecessors, (259), 79 states have return successors, (281), 238 states have call predecessors, (281), 256 states have call successors, (281) [2021-11-19 14:44:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2409 transitions. [2021-11-19 14:44:47,850 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2409 transitions. Word has length 136 [2021-11-19 14:44:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:47,851 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 2409 transitions. [2021-11-19 14:44:47,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2409 transitions. [2021-11-19 14:44:47,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-19 14:44:47,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:47,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:47,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:48,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:48,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1141570485, now seen corresponding path program 1 times [2021-11-19 14:44:48,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:48,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771070544] [2021-11-19 14:44:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:48,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:48,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:48,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:48,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:44:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:48,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:44:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:44:48,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 14:44:49,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:49,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771070544] [2021-11-19 14:44:49,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771070544] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:44:49,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:44:49,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-11-19 14:44:49,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139025262] [2021-11-19 14:44:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:49,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:44:49,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:44:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:44:49,057 INFO L87 Difference]: Start difference. First operand 1509 states and 2409 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:44:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:49,803 INFO L93 Difference]: Finished difference Result 3204 states and 5067 transitions. [2021-11-19 14:44:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:44:49,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2021-11-19 14:44:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:49,821 INFO L225 Difference]: With dead ends: 3204 [2021-11-19 14:44:49,821 INFO L226 Difference]: Without dead ends: 1738 [2021-11-19 14:44:49,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:44:49,832 INFO L933 BasicCegarLoop]: 954 mSDtfsCounter, 612 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:49,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 3769 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:44:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-19 14:44:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1732. [2021-11-19 14:44:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1329 states have (on average 1.5259593679458239) internal successors, (2028), 1355 states have internal predecessors, (2028), 295 states have call successors, (295), 106 states have call predecessors, (295), 107 states have return successors, (352), 282 states have call predecessors, (352), 290 states have call successors, (352) [2021-11-19 14:44:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2675 transitions. [2021-11-19 14:44:49,942 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2675 transitions. Word has length 138 [2021-11-19 14:44:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:49,943 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 2675 transitions. [2021-11-19 14:44:49,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 14:44:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2675 transitions. [2021-11-19 14:44:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 14:44:49,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:49,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:49,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:50,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:50,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1207381509, now seen corresponding path program 1 times [2021-11-19 14:44:50,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:50,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698608545] [2021-11-19 14:44:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:50,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:50,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:50,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:50,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:44:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:50,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:44:50,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 14:44:50,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-19 14:44:51,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:51,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698608545] [2021-11-19 14:44:51,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698608545] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:44:51,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:44:51,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:44:51,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701847572] [2021-11-19 14:44:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:51,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:44:51,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:51,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:44:51,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:44:51,301 INFO L87 Difference]: Start difference. First operand 1732 states and 2675 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:52,299 INFO L93 Difference]: Finished difference Result 3456 states and 5476 transitions. [2021-11-19 14:44:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:44:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2021-11-19 14:44:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:52,317 INFO L225 Difference]: With dead ends: 3456 [2021-11-19 14:44:52,317 INFO L226 Difference]: Without dead ends: 1767 [2021-11-19 14:44:52,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:44:52,353 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 809 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:52,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2128 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:44:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-19 14:44:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-19 14:44:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1359 states have (on average 1.5143487858719646) internal successors, (2058), 1385 states have internal predecessors, (2058), 295 states have call successors, (295), 111 states have call predecessors, (295), 112 states have return successors, (356), 282 states have call predecessors, (356), 290 states have call successors, (356) [2021-11-19 14:44:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2709 transitions. [2021-11-19 14:44:52,455 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2709 transitions. Word has length 139 [2021-11-19 14:44:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:52,456 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2709 transitions. [2021-11-19 14:44:52,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-19 14:44:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2709 transitions. [2021-11-19 14:44:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-19 14:44:52,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:52,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:52,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:52,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:52,664 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash -611883930, now seen corresponding path program 1 times [2021-11-19 14:44:52,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:52,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190763306] [2021-11-19 14:44:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:52,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:52,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:52,667 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:52,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:44:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:52,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:44:52,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:53,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:44:54,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:54,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190763306] [2021-11-19 14:44:54,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190763306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:44:54,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [455314163] [2021-11-19 14:44:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:54,107 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:44:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:44:54,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:44:54,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:44:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:54,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:44:54,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:54,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:44:55,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [455314163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:44:55,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179900175] [2021-11-19 14:44:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:55,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:44:55,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:44:55,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:44:55,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 14:44:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:44:55,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:44:55,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-19 14:44:56,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179900175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:44:56,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:44:56,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11, 10, 11, 10] total 18 [2021-11-19 14:44:56,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283794096] [2021-11-19 14:44:56,455 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:44:56,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 14:44:56,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:56,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 14:44:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:44:56,457 INFO L87 Difference]: Start difference. First operand 1767 states and 2709 transitions. Second operand has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (32), 6 states have call predecessors, (32), 12 states have return successors, (33), 12 states have call predecessors, (33), 8 states have call successors, (33) [2021-11-19 14:45:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:06,746 INFO L93 Difference]: Finished difference Result 5907 states and 9378 transitions. [2021-11-19 14:45:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:45:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (32), 6 states have call predecessors, (32), 12 states have return successors, (33), 12 states have call predecessors, (33), 8 states have call successors, (33) Word has length 142 [2021-11-19 14:45:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:06,781 INFO L225 Difference]: With dead ends: 5907 [2021-11-19 14:45:06,781 INFO L226 Difference]: Without dead ends: 4183 [2021-11-19 14:45:06,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:45:06,799 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 3559 mSDsluCounter, 4710 mSDsCounter, 0 mSdLazyCounter, 9730 mSolverCounterSat, 1418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3645 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 11148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1418 IncrementalHoareTripleChecker+Valid, 9730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:06,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3645 Valid, 6426 Invalid, 11148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1418 Valid, 9730 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 14:45:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2021-11-19 14:45:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3709. [2021-11-19 14:45:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 2814 states have (on average 1.5053304904051172) internal successors, (4236), 2879 states have internal predecessors, (4236), 638 states have call successors, (638), 219 states have call predecessors, (638), 256 states have return successors, (876), 639 states have call predecessors, (876), 628 states have call successors, (876) [2021-11-19 14:45:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5750 transitions. [2021-11-19 14:45:07,093 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5750 transitions. Word has length 142 [2021-11-19 14:45:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:07,094 INFO L470 AbstractCegarLoop]: Abstraction has 3709 states and 5750 transitions. [2021-11-19 14:45:07,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (32), 6 states have call predecessors, (32), 12 states have return successors, (33), 12 states have call predecessors, (33), 8 states have call successors, (33) [2021-11-19 14:45:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5750 transitions. [2021-11-19 14:45:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 14:45:07,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:07,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:07,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:07,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:07,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:07,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,723 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash -285775352, now seen corresponding path program 1 times [2021-11-19 14:45:07,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:07,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052494335] [2021-11-19 14:45:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:07,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:07,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:07,726 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:07,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:45:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:08,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:45:08,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 14:45:08,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 14:45:08,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:08,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052494335] [2021-11-19 14:45:08,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052494335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:08,733 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:08,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-19 14:45:08,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135172595] [2021-11-19 14:45:08,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:08,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:45:08,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:45:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:08,735 INFO L87 Difference]: Start difference. First operand 3709 states and 5750 transitions. Second operand has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 14:45:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:09,076 INFO L93 Difference]: Finished difference Result 7227 states and 11228 transitions. [2021-11-19 14:45:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:45:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 145 [2021-11-19 14:45:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:09,106 INFO L225 Difference]: With dead ends: 7227 [2021-11-19 14:45:09,106 INFO L226 Difference]: Without dead ends: 3551 [2021-11-19 14:45:09,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:45:09,117 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 67 mSDsluCounter, 5858 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 6702 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:09,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 6702 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:45:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-11-19 14:45:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3536. [2021-11-19 14:45:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 2682 states have (on average 1.51193139448173) internal successors, (4055), 2746 states have internal predecessors, (4055), 614 states have call successors, (614), 204 states have call predecessors, (614), 239 states have return successors, (814), 614 states have call predecessors, (814), 604 states have call successors, (814) [2021-11-19 14:45:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5483 transitions. [2021-11-19 14:45:09,364 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5483 transitions. Word has length 145 [2021-11-19 14:45:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:09,365 INFO L470 AbstractCegarLoop]: Abstraction has 3536 states and 5483 transitions. [2021-11-19 14:45:09,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-19 14:45:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5483 transitions. [2021-11-19 14:45:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 14:45:09,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:09,372 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:09,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:09,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:09,587 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash -359991112, now seen corresponding path program 1 times [2021-11-19 14:45:09,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:09,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394001815] [2021-11-19 14:45:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:09,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:09,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:09,589 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:09,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:45:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:09,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:45:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:45:10,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 14:45:10,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:10,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394001815] [2021-11-19 14:45:10,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394001815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:10,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [626381092] [2021-11-19 14:45:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:10,896 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:10,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:45:10,904 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:45:10,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 14:45:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:45:11,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:45:11,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 14:45:12,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [626381092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:12,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705242531] [2021-11-19 14:45:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:12,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:45:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:45:12,043 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:45:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 14:45:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:12,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 14:45:12,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:45:12,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 14:45:13,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705242531] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:13,107 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:45:13,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 14 [2021-11-19 14:45:13,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428132064] [2021-11-19 14:45:13,108 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:45:13,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:45:13,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:13,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:45:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:45:13,111 INFO L87 Difference]: Start difference. First operand 3536 states and 5483 transitions. Second operand has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (33), 10 states have call predecessors, (33), 8 states have call successors, (33) [2021-11-19 14:45:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:19,535 INFO L93 Difference]: Finished difference Result 9000 states and 14233 transitions. [2021-11-19 14:45:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 14:45:19,536 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (33), 10 states have call predecessors, (33), 8 states have call successors, (33) Word has length 150 [2021-11-19 14:45:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:19,587 INFO L225 Difference]: With dead ends: 9000 [2021-11-19 14:45:19,587 INFO L226 Difference]: Without dead ends: 5504 [2021-11-19 14:45:19,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:45:19,612 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 5043 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 5938 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5120 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 7548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 5938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:19,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5120 Valid, 4335 Invalid, 7548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 5938 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 14:45:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2021-11-19 14:45:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5297. [2021-11-19 14:45:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4001 states have (on average 1.5113721569607599) internal successors, (6047), 4095 states have internal predecessors, (6047), 933 states have call successors, (933), 297 states have call predecessors, (933), 362 states have return successors, (1258), 950 states have call predecessors, (1258), 918 states have call successors, (1258) [2021-11-19 14:45:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 8238 transitions. [2021-11-19 14:45:20,023 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 8238 transitions. Word has length 150 [2021-11-19 14:45:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:20,023 INFO L470 AbstractCegarLoop]: Abstraction has 5297 states and 8238 transitions. [2021-11-19 14:45:20,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (33), 6 states have call predecessors, (33), 10 states have return successors, (33), 10 states have call predecessors, (33), 8 states have call successors, (33) [2021-11-19 14:45:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 8238 transitions. [2021-11-19 14:45:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 14:45:20,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:20,030 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:20,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:20,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 14:45:20,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:20,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:20,647 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 773883063, now seen corresponding path program 1 times [2021-11-19 14:45:20,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:20,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923784614] [2021-11-19 14:45:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:20,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:20,650 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:45:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:20,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:20,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:21,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 14:45:21,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:21,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923784614] [2021-11-19 14:45:21,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923784614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:21,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1210975537] [2021-11-19 14:45:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:21,757 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:21,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:45:21,758 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:45:21,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:45:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:22,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:22,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:22,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 14:45:22,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1210975537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:22,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667988059] [2021-11-19 14:45:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:22,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:45:22,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:45:22,851 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:45:22,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-19 14:45:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:23,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:45:23,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 14:45:23,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 14:45:23,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667988059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:45:23,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:45:23,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 11 [2021-11-19 14:45:23,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215245163] [2021-11-19 14:45:23,996 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:45:23,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:45:23,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:45:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:45:23,998 INFO L87 Difference]: Start difference. First operand 5297 states and 8238 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 6 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-19 14:45:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:31,213 INFO L93 Difference]: Finished difference Result 21195 states and 34103 transitions. [2021-11-19 14:45:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:45:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 6 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) Word has length 151 [2021-11-19 14:45:31,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:31,334 INFO L225 Difference]: With dead ends: 21195 [2021-11-19 14:45:31,334 INFO L226 Difference]: Without dead ends: 15926 [2021-11-19 14:45:31,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:45:31,372 INFO L933 BasicCegarLoop]: 1405 mSDtfsCounter, 6058 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 4916 mSolverCounterSat, 2038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6162 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 6954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2038 IncrementalHoareTripleChecker+Valid, 4916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:31,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6162 Valid, 2860 Invalid, 6954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2038 Valid, 4916 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-19 14:45:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15926 states. [2021-11-19 14:45:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15926 to 14344. [2021-11-19 14:45:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14344 states, 10809 states have (on average 1.4999537422518272) internal successors, (16213), 11074 states have internal predecessors, (16213), 2528 states have call successors, (2528), 864 states have call predecessors, (2528), 1006 states have return successors, (3638), 2543 states have call predecessors, (3638), 2492 states have call successors, (3638) [2021-11-19 14:45:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14344 states to 14344 states and 22379 transitions. [2021-11-19 14:45:32,510 INFO L78 Accepts]: Start accepts. Automaton has 14344 states and 22379 transitions. Word has length 151 [2021-11-19 14:45:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:32,511 INFO L470 AbstractCegarLoop]: Abstraction has 14344 states and 22379 transitions. [2021-11-19 14:45:32,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 6 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-19 14:45:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14344 states and 22379 transitions. [2021-11-19 14:45:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-19 14:45:32,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:32,519 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:32,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:32,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-19 14:45:32,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:33,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:33,147 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:33,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1541579252, now seen corresponding path program 1 times [2021-11-19 14:45:33,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:33,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548369405] [2021-11-19 14:45:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:33,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:33,150 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:33,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:45:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:45:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:45:35,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-19 14:45:38,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:38,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548369405] [2021-11-19 14:45:38,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548369405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:38,594 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:38,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-19 14:45:38,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494002740] [2021-11-19 14:45:38,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:38,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:45:38,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:45:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:45:38,596 INFO L87 Difference]: Start difference. First operand 14344 states and 22379 transitions. Second operand has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 11 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2021-11-19 14:45:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:52,340 INFO L93 Difference]: Finished difference Result 43609 states and 70297 transitions. [2021-11-19 14:45:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:45:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 11 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 153 [2021-11-19 14:45:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:52,589 INFO L225 Difference]: With dead ends: 43609 [2021-11-19 14:45:52,589 INFO L226 Difference]: Without dead ends: 29281 [2021-11-19 14:45:52,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:45:52,718 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 5704 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 9449 mSolverCounterSat, 1701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5904 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 11150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1701 IncrementalHoareTripleChecker+Valid, 9449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:52,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5904 Valid, 4414 Invalid, 11150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1701 Valid, 9449 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2021-11-19 14:45:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29281 states. [2021-11-19 14:45:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29281 to 24775. [2021-11-19 14:45:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24775 states, 18323 states have (on average 1.4780330731867053) internal successors, (27082), 18829 states have internal predecessors, (27082), 4726 states have call successors, (4726), 1499 states have call predecessors, (4726), 1725 states have return successors, (6791), 4704 states have call predecessors, (6791), 4672 states have call successors, (6791) [2021-11-19 14:45:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24775 states to 24775 states and 38599 transitions. [2021-11-19 14:45:54,849 INFO L78 Accepts]: Start accepts. Automaton has 24775 states and 38599 transitions. Word has length 153 [2021-11-19 14:45:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:54,850 INFO L470 AbstractCegarLoop]: Abstraction has 24775 states and 38599 transitions. [2021-11-19 14:45:54,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 11 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2021-11-19 14:45:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 24775 states and 38599 transitions. [2021-11-19 14:45:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:45:54,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:54,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:54,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:55,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:55,077 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash -596670951, now seen corresponding path program 1 times [2021-11-19 14:45:55,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:55,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262588067] [2021-11-19 14:45:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:55,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:55,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:55,081 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:55,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:45:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:55,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:45:55,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:45:56,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-19 14:45:56,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:56,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262588067] [2021-11-19 14:45:56,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262588067] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:56,565 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:56,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-19 14:45:56,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147294694] [2021-11-19 14:45:56,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:56,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:45:56,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:45:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:45:56,567 INFO L87 Difference]: Start difference. First operand 24775 states and 38599 transitions. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 12 states have internal predecessors, (169), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2021-11-19 14:46:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:08,960 INFO L93 Difference]: Finished difference Result 79714 states and 132361 transitions. [2021-11-19 14:46:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:46:08,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 12 states have internal predecessors, (169), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) Word has length 157 [2021-11-19 14:46:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:09,778 INFO L225 Difference]: With dead ends: 79714 [2021-11-19 14:46:09,778 INFO L226 Difference]: Without dead ends: 54763 [2021-11-19 14:46:10,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:46:10,229 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 2425 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 8894 mSolverCounterSat, 961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 9855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 8894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:10,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2540 Valid, 4104 Invalid, 9855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 8894 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-11-19 14:46:10,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54763 states. [2021-11-19 14:46:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54763 to 46672. [2021-11-19 14:46:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46672 states, 33666 states have (on average 1.459989306718945) internal successors, (49152), 34898 states have internal predecessors, (49152), 9748 states have call successors, (9748), 2494 states have call predecessors, (9748), 3257 states have return successors, (15139), 9945 states have call predecessors, (15139), 9655 states have call successors, (15139) [2021-11-19 14:46:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46672 states to 46672 states and 74039 transitions. [2021-11-19 14:46:14,521 INFO L78 Accepts]: Start accepts. Automaton has 46672 states and 74039 transitions. Word has length 157 [2021-11-19 14:46:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:14,522 INFO L470 AbstractCegarLoop]: Abstraction has 46672 states and 74039 transitions. [2021-11-19 14:46:14,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 12 states have internal predecessors, (169), 8 states have call successors, (34), 6 states have call predecessors, (34), 8 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2021-11-19 14:46:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 46672 states and 74039 transitions. [2021-11-19 14:46:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:46:14,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:14,529 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:14,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:14,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:14,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1137433499, now seen corresponding path program 1 times [2021-11-19 14:46:14,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:14,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818808147] [2021-11-19 14:46:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:14,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:14,741 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:14,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:46:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:15,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:46:15,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 14:46:15,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:46:16,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:16,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818808147] [2021-11-19 14:46:16,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818808147] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:16,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:16,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 18 [2021-11-19 14:46:16,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4704852] [2021-11-19 14:46:16,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:16,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:46:16,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:16,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:46:16,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:46:16,384 INFO L87 Difference]: Start difference. First operand 46672 states and 74039 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-19 14:46:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:26,707 INFO L93 Difference]: Finished difference Result 83469 states and 133283 transitions. [2021-11-19 14:46:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:46:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) Word has length 157 [2021-11-19 14:46:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:27,094 INFO L225 Difference]: With dead ends: 83469 [2021-11-19 14:46:27,095 INFO L226 Difference]: Without dead ends: 47756 [2021-11-19 14:46:27,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2021-11-19 14:46:27,409 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 2627 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 7465 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 8210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 7465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:27,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2746 Valid, 4599 Invalid, 8210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 7465 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 14:46:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47756 states. [2021-11-19 14:46:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47756 to 46715. [2021-11-19 14:46:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46715 states, 33707 states have (on average 1.4585397691874091) internal successors, (49163), 34939 states have internal predecessors, (49163), 9732 states have call successors, (9732), 2484 states have call predecessors, (9732), 3275 states have return successors, (15172), 9957 states have call predecessors, (15172), 9639 states have call successors, (15172) [2021-11-19 14:46:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46715 states to 46715 states and 74067 transitions. [2021-11-19 14:46:30,969 INFO L78 Accepts]: Start accepts. Automaton has 46715 states and 74067 transitions. Word has length 157 [2021-11-19 14:46:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:30,969 INFO L470 AbstractCegarLoop]: Abstraction has 46715 states and 74067 transitions. [2021-11-19 14:46:30,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-19 14:46:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 46715 states and 74067 transitions. [2021-11-19 14:46:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-19 14:46:30,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:30,977 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:31,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:31,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:31,191 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 373883747, now seen corresponding path program 1 times [2021-11-19 14:46:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:31,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142776802] [2021-11-19 14:46:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:31,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:31,195 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:31,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c0c1d7e-90d9-4c7a-94f3-4c967d7a7dbe/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:46:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:31,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:46:31,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:46:31,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-19 14:46:32,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:32,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142776802] [2021-11-19 14:46:32,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142776802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:32,392 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:32,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 14:46:32,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250460775] [2021-11-19 14:46:32,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:32,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:46:32,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:46:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:46:32,394 INFO L87 Difference]: Start difference. First operand 46715 states and 74067 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 8 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2021-11-19 14:46:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:45,760 INFO L93 Difference]: Finished difference Result 162096 states and 274210 transitions. [2021-11-19 14:46:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:46:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 8 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 164 [2021-11-19 14:46:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:47,032 INFO L225 Difference]: With dead ends: 162096 [2021-11-19 14:46:47,032 INFO L226 Difference]: Without dead ends: 115824 [2021-11-19 14:46:47,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:46:47,384 INFO L933 BasicCegarLoop]: 1615 mSDtfsCounter, 2930 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 4340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:47,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3046 Valid, 2551 Invalid, 4340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-19 14:46:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115824 states.