./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:38,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:38,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:38,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:38,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:38,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:38,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:38,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:38,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:38,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:38,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:38,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:38,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:38,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:38,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:38,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:38,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:38,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:38,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:38,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:38,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:38,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:38,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:38,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:38,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:38,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:38,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:38,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:38,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:38,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:38,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:38,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:38,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:38,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:38,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:38,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:38,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:38,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:38,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:38,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:38,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:38,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:39:38,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:38,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:38,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:38,757 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:38,757 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:38,757 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:38,758 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:39:38,758 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:38,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:38,766 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:39:38,768 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:39:38,768 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:38,768 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:39:38,769 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:39:38,769 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:39:38,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:38,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:38,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:39:38,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:38,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:38,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:38,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:38,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:38,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:38,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:38,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:38,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:38,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:38,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:38,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:38,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:38,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:38,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:38,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:38,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:39:38,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:39:38,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:38,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:38,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:38,780 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_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2021-11-07 01:39:39,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:39,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:39,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:39,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:39,125 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:39,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2021-11-07 01:39:39,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/d9f4e03fa/8cf55f213c4544cbb5286c7b209ed28a/FLAG2c8b5bd94 [2021-11-07 01:39:39,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:39,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2021-11-07 01:39:40,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/d9f4e03fa/8cf55f213c4544cbb5286c7b209ed28a/FLAG2c8b5bd94 [2021-11-07 01:39:40,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/d9f4e03fa/8cf55f213c4544cbb5286c7b209ed28a [2021-11-07 01:39:40,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:40,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:40,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:40,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:40,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:40,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:40,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7d0d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40, skipping insertion in model container [2021-11-07 01:39:40,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:40" (1/1) ... [2021-11-07 01:39:40,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:40,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:40,848 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2021-11-07 01:39:40,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:40,990 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:39:40,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54ad9307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:40, skipping insertion in model container [2021-11-07 01:39:40,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:40,992 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:39:40,994 INFO L168 Benchmark]: Toolchain (without parser) took 861.78 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 66.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:40,996 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:39:40,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.07 ms. Allocated memory is still 107.0 MB. Free memory was 71.1 MB in the beginning and 66.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:41,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 107.0 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 858.07 ms. Allocated memory is still 107.0 MB. Free memory was 71.1 MB in the beginning and 66.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3004]: 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_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:43,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:43,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:43,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:43,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:43,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:43,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:43,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:43,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:43,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:43,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:43,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:43,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:43,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:43,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:43,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:43,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:43,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:43,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:43,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:43,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:43,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:43,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:43,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:43,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:43,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:43,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:43,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:43,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:43,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:43,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:43,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:43,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:43,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:43,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:43,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:43,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:43,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:43,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:43,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:43,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:43,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:39:43,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:43,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:43,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:43,757 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:43,757 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:43,757 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:43,758 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:43,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:43,758 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:43,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:43,760 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:43,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:43,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:43,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:43,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:43,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:43,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:43,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:39:43,762 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:39:43,762 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:43,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:43,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:43,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:43,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:43,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:39:43,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:43,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:43,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:43,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:43,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:43,765 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:39:43,765 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:43,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:43,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:43,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:43,766 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_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2021-11-07 01:39:44,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:44,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:44,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:44,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:44,275 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:44,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2021-11-07 01:39:44,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/c9e4529e9/a5586d9e041a4d09bb56e7242d67166c/FLAG99c52013d [2021-11-07 01:39:45,328 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:45,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2021-11-07 01:39:45,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/c9e4529e9/a5586d9e041a4d09bb56e7242d67166c/FLAG99c52013d [2021-11-07 01:39:45,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/data/c9e4529e9/a5586d9e041a4d09bb56e7242d67166c [2021-11-07 01:39:45,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:45,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:45,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:45,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:45,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:45,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:45" (1/1) ... [2021-11-07 01:39:45,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ba9cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:45, skipping insertion in model container [2021-11-07 01:39:45,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:45" (1/1) ... [2021-11-07 01:39:45,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:45,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:46,203 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2021-11-07 01:39:46,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:46,349 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:39:46,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:46,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2021-11-07 01:39:46,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:46,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:39:46,661 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2021-11-07 01:39:46,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:46,742 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:39:46,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46 WrapperNode [2021-11-07 01:39:46,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:46,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:46,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:39:46,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:39:46,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:46,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:47,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:47,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:39:47,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:39:47,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:39:47,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:47,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:47,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:47,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:48,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:48,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:48,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:48,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:39:48,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:39:48,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:39:48,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:39:48,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (1/1) ... [2021-11-07 01:39:48,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:48,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:48,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:39:48,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:39:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:39:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:39:48,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:39:48,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:40:12,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:40:12,423 INFO L299 CfgBuilder]: Removed 2011 assume(true) statements. [2021-11-07 01:40:12,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:12 BoogieIcfgContainer [2021-11-07 01:40:12,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:40:12,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:40:12,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:40:12,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:40:12,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:39:45" (1/3) ... [2021-11-07 01:40:12,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229e4c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:12, skipping insertion in model container [2021-11-07 01:40:12,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:46" (2/3) ... [2021-11-07 01:40:12,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229e4c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:40:12, skipping insertion in model container [2021-11-07 01:40:12,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:40:12" (3/3) ... [2021-11-07 01:40:12,445 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2021-11-07 01:40:12,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:40:12,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:40:12,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:40:12,560 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:40:12,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:40:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 9321 states, 9310 states have (on average 1.894092373791622) internal successors, (17634), 9320 states have internal predecessors, (17634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:40:12,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:12,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:12,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1674010642, now seen corresponding path program 1 times [2021-11-07 01:40:12,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:12,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969896498] [2021-11-07 01:40:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:12,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:12,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:12,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:40:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:13,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:40:13,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:13,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:13,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:13,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969896498] [2021-11-07 01:40:13,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969896498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:13,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:13,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:40:13,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764944909] [2021-11-07 01:40:13,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:40:13,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:40:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:13,839 INFO L87 Difference]: Start difference. First operand has 9321 states, 9310 states have (on average 1.894092373791622) internal successors, (17634), 9320 states have internal predecessors, (17634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:14,480 INFO L93 Difference]: Finished difference Result 16834 states and 31840 transitions. [2021-11-07 01:40:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:40:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:40:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:14,588 INFO L225 Difference]: With dead ends: 16834 [2021-11-07 01:40:14,588 INFO L226 Difference]: Without dead ends: 9317 [2021-11-07 01:40:14,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:40:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9317 states. [2021-11-07 01:40:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9317 to 9317. [2021-11-07 01:40:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9317 states, 9307 states have (on average 1.8797679166218975) internal successors, (17495), 9316 states have internal predecessors, (17495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9317 states to 9317 states and 17495 transitions. [2021-11-07 01:40:15,092 INFO L78 Accepts]: Start accepts. Automaton has 9317 states and 17495 transitions. Word has length 57 [2021-11-07 01:40:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:15,093 INFO L470 AbstractCegarLoop]: Abstraction has 9317 states and 17495 transitions. [2021-11-07 01:40:15,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9317 states and 17495 transitions. [2021-11-07 01:40:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:40:15,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:15,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:15,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:15,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:15,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:15,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2102070064, now seen corresponding path program 1 times [2021-11-07 01:40:15,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:15,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062203614] [2021-11-07 01:40:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:15,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:15,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:15,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:15,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:40:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:15,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:15,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:16,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:16,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:16,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062203614] [2021-11-07 01:40:16,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062203614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:16,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:16,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:16,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123777339] [2021-11-07 01:40:16,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:16,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:16,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:16,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:16,277 INFO L87 Difference]: Start difference. First operand 9317 states and 17495 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:18,057 INFO L93 Difference]: Finished difference Result 31610 states and 59357 transitions. [2021-11-07 01:40:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:40:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:18,218 INFO L225 Difference]: With dead ends: 31610 [2021-11-07 01:40:18,219 INFO L226 Difference]: Without dead ends: 22301 [2021-11-07 01:40:18,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:18,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22301 states. [2021-11-07 01:40:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22301 to 9313. [2021-11-07 01:40:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9313 states, 9303 states have (on average 1.8793937439535633) internal successors, (17484), 9312 states have internal predecessors, (17484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 17484 transitions. [2021-11-07 01:40:18,921 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 17484 transitions. Word has length 57 [2021-11-07 01:40:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:18,922 INFO L470 AbstractCegarLoop]: Abstraction has 9313 states and 17484 transitions. [2021-11-07 01:40:18,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 17484 transitions. [2021-11-07 01:40:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:40:18,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:18,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:18,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:19,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:19,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1748381794, now seen corresponding path program 1 times [2021-11-07 01:40:19,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:19,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066946409] [2021-11-07 01:40:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:19,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:19,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:19,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:19,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:40:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:40:19,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:19,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:20,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:20,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066946409] [2021-11-07 01:40:20,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066946409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:20,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:20,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:40:20,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66076588] [2021-11-07 01:40:20,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:40:20,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:40:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:20,102 INFO L87 Difference]: Start difference. First operand 9313 states and 17484 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:24,235 INFO L93 Difference]: Finished difference Result 64572 states and 121219 transitions. [2021-11-07 01:40:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:40:24,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:40:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:24,431 INFO L225 Difference]: With dead ends: 64572 [2021-11-07 01:40:24,431 INFO L226 Difference]: Without dead ends: 55278 [2021-11-07 01:40:24,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:40:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55278 states. [2021-11-07 01:40:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55278 to 9302. [2021-11-07 01:40:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9302 states, 9292 states have (on average 1.8773138183383555) internal successors, (17444), 9301 states have internal predecessors, (17444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9302 states to 9302 states and 17444 transitions. [2021-11-07 01:40:25,412 INFO L78 Accepts]: Start accepts. Automaton has 9302 states and 17444 transitions. Word has length 59 [2021-11-07 01:40:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:25,413 INFO L470 AbstractCegarLoop]: Abstraction has 9302 states and 17444 transitions. [2021-11-07 01:40:25,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 9302 states and 17444 transitions. [2021-11-07 01:40:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:40:25,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:25,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:25,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:25,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:25,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1671171297, now seen corresponding path program 1 times [2021-11-07 01:40:25,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:25,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949393163] [2021-11-07 01:40:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:25,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:25,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:40:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:26,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:26,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:26,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:26,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:26,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949393163] [2021-11-07 01:40:26,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949393163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:26,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:26,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:26,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559616744] [2021-11-07 01:40:26,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:26,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:26,629 INFO L87 Difference]: Start difference. First operand 9302 states and 17444 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:27,945 INFO L93 Difference]: Finished difference Result 31474 states and 59050 transitions. [2021-11-07 01:40:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:40:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:28,024 INFO L225 Difference]: With dead ends: 31474 [2021-11-07 01:40:28,025 INFO L226 Difference]: Without dead ends: 22187 [2021-11-07 01:40:28,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22187 states. [2021-11-07 01:40:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22187 to 9298. [2021-11-07 01:40:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9298 states, 9288 states have (on average 1.8765073212747632) internal successors, (17429), 9297 states have internal predecessors, (17429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 17429 transitions. [2021-11-07 01:40:28,752 INFO L78 Accepts]: Start accepts. Automaton has 9298 states and 17429 transitions. Word has length 64 [2021-11-07 01:40:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:28,755 INFO L470 AbstractCegarLoop]: Abstraction has 9298 states and 17429 transitions. [2021-11-07 01:40:28,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 9298 states and 17429 transitions. [2021-11-07 01:40:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:40:28,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:28,762 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:28,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:28,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:28,978 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:28,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:28,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1054442825, now seen corresponding path program 1 times [2021-11-07 01:40:28,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:28,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548005732] [2021-11-07 01:40:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:28,982 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:28,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:29,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:40:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:29,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:40:29,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:29,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:29,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:29,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548005732] [2021-11-07 01:40:29,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548005732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:29,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:29,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:40:29,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731702531] [2021-11-07 01:40:29,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:40:29,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:40:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:40:29,966 INFO L87 Difference]: Start difference. First operand 9298 states and 17429 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:36,434 INFO L93 Difference]: Finished difference Result 101396 states and 190288 transitions. [2021-11-07 01:40:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:40:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:40:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:36,828 INFO L225 Difference]: With dead ends: 101396 [2021-11-07 01:40:36,828 INFO L226 Difference]: Without dead ends: 92118 [2021-11-07 01:40:36,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:40:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92118 states. [2021-11-07 01:40:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92118 to 9311. [2021-11-07 01:40:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9311 states, 9301 states have (on average 1.8747446511127837) internal successors, (17437), 9310 states have internal predecessors, (17437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9311 states to 9311 states and 17437 transitions. [2021-11-07 01:40:37,990 INFO L78 Accepts]: Start accepts. Automaton has 9311 states and 17437 transitions. Word has length 66 [2021-11-07 01:40:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:37,990 INFO L470 AbstractCegarLoop]: Abstraction has 9311 states and 17437 transitions. [2021-11-07 01:40:37,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9311 states and 17437 transitions. [2021-11-07 01:40:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:40:37,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:37,997 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:38,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:40:38,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:38,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1724455376, now seen corresponding path program 1 times [2021-11-07 01:40:38,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:38,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393416600] [2021-11-07 01:40:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:38,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:38,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:38,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:40:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:38,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:40:38,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:38,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:39,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:39,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393416600] [2021-11-07 01:40:39,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393416600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:39,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:39,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:40:39,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603266549] [2021-11-07 01:40:39,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:40:39,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:40:39,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:39,145 INFO L87 Difference]: Start difference. First operand 9311 states and 17437 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:42,089 INFO L93 Difference]: Finished difference Result 64558 states and 121099 transitions. [2021-11-07 01:40:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:40:42,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:40:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:42,196 INFO L225 Difference]: With dead ends: 64558 [2021-11-07 01:40:42,196 INFO L226 Difference]: Without dead ends: 55299 [2021-11-07 01:40:42,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:40:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55299 states. [2021-11-07 01:40:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55299 to 9323. [2021-11-07 01:40:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9323 states, 9313 states have (on average 1.8736175238913346) internal successors, (17449), 9322 states have internal predecessors, (17449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9323 states to 9323 states and 17449 transitions. [2021-11-07 01:40:43,184 INFO L78 Accepts]: Start accepts. Automaton has 9323 states and 17449 transitions. Word has length 70 [2021-11-07 01:40:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:43,184 INFO L470 AbstractCegarLoop]: Abstraction has 9323 states and 17449 transitions. [2021-11-07 01:40:43,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 9323 states and 17449 transitions. [2021-11-07 01:40:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:40:43,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:43,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:43,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:43,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:43,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1482649035, now seen corresponding path program 1 times [2021-11-07 01:40:43,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:43,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284931805] [2021-11-07 01:40:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:43,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:43,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:43,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:43,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:40:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:44,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:44,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:44,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:44,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:44,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284931805] [2021-11-07 01:40:44,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284931805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:44,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:44,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:40:44,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988051421] [2021-11-07 01:40:44,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:44,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:44,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:40:44,400 INFO L87 Difference]: Start difference. First operand 9323 states and 17449 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:45,203 INFO L93 Difference]: Finished difference Result 22278 states and 41746 transitions. [2021-11-07 01:40:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 01:40:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:45,226 INFO L225 Difference]: With dead ends: 22278 [2021-11-07 01:40:45,226 INFO L226 Difference]: Without dead ends: 12983 [2021-11-07 01:40:45,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:40:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2021-11-07 01:40:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 9275. [2021-11-07 01:40:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9265 states have (on average 1.8747976254722072) internal successors, (17370), 9274 states have internal predecessors, (17370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 17370 transitions. [2021-11-07 01:40:45,685 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 17370 transitions. Word has length 70 [2021-11-07 01:40:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:45,686 INFO L470 AbstractCegarLoop]: Abstraction has 9275 states and 17370 transitions. [2021-11-07 01:40:45,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 17370 transitions. [2021-11-07 01:40:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:40:45,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:45,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:45,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:45,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:45,903 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1038617024, now seen corresponding path program 1 times [2021-11-07 01:40:45,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:45,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733549809] [2021-11-07 01:40:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:45,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:45,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:45,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:45,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:40:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:46,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:40:46,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:46,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:46,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:46,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733549809] [2021-11-07 01:40:46,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733549809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:46,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:46,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:40:46,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018320288] [2021-11-07 01:40:46,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:40:46,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:40:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:46,836 INFO L87 Difference]: Start difference. First operand 9275 states and 17370 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:47,374 INFO L93 Difference]: Finished difference Result 22225 states and 41652 transitions. [2021-11-07 01:40:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:40:47,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:40:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:47,406 INFO L225 Difference]: With dead ends: 22225 [2021-11-07 01:40:47,407 INFO L226 Difference]: Without dead ends: 12981 [2021-11-07 01:40:47,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:40:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2021-11-07 01:40:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 9272. [2021-11-07 01:40:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 9262 states have (on average 1.8740012956164975) internal successors, (17357), 9271 states have internal predecessors, (17357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 17357 transitions. [2021-11-07 01:40:47,936 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 17357 transitions. Word has length 71 [2021-11-07 01:40:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:47,936 INFO L470 AbstractCegarLoop]: Abstraction has 9272 states and 17357 transitions. [2021-11-07 01:40:47,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 17357 transitions. [2021-11-07 01:40:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:40:47,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:47,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:47,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:48,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:48,156 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:48,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1453821206, now seen corresponding path program 1 times [2021-11-07 01:40:48,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:48,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283596864] [2021-11-07 01:40:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:48,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:48,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:48,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:48,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:40:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:48,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:40:48,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:49,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:49,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:49,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283596864] [2021-11-07 01:40:49,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283596864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:49,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:49,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:40:49,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642477099] [2021-11-07 01:40:49,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:40:49,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:49,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:40:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:40:49,211 INFO L87 Difference]: Start difference. First operand 9272 states and 17357 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:51,392 INFO L93 Difference]: Finished difference Result 51827 states and 97163 transitions. [2021-11-07 01:40:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:40:51,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:40:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:51,454 INFO L225 Difference]: With dead ends: 51827 [2021-11-07 01:40:51,455 INFO L226 Difference]: Without dead ends: 42590 [2021-11-07 01:40:51,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:40:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42590 states. [2021-11-07 01:40:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42590 to 9277. [2021-11-07 01:40:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 9267 states have (on average 1.8730980899967626) internal successors, (17358), 9276 states have internal predecessors, (17358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 17358 transitions. [2021-11-07 01:40:52,285 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 17358 transitions. Word has length 72 [2021-11-07 01:40:52,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:52,286 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 17358 transitions. [2021-11-07 01:40:52,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:40:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 17358 transitions. [2021-11-07 01:40:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:40:52,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:52,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:52,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:52,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:52,505 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:40:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:52,506 INFO L85 PathProgramCache]: Analyzing trace with hash -158757115, now seen corresponding path program 1 times [2021-11-07 01:40:52,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:52,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102816145] [2021-11-07 01:40:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:52,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:52,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:52,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:52,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:40:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:53,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:53,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:53,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:40:55,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:55,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102816145] [2021-11-07 01:40:55,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102816145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:55,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:40:55,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:40:55,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198775281] [2021-11-07 01:40:55,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:40:55,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:40:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:40:55,265 INFO L87 Difference]: Start difference. First operand 9277 states and 17358 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:01,936 INFO L93 Difference]: Finished difference Result 33703 states and 63190 transitions. [2021-11-07 01:41:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:41:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:41:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:01,978 INFO L225 Difference]: With dead ends: 33703 [2021-11-07 01:41:01,978 INFO L226 Difference]: Without dead ends: 24480 [2021-11-07 01:41:01,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:41:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24480 states. [2021-11-07 01:41:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24480 to 14876. [2021-11-07 01:41:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 14866 states have (on average 1.8715189021929235) internal successors, (27822), 14875 states have internal predecessors, (27822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 27822 transitions. [2021-11-07 01:41:03,060 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 27822 transitions. Word has length 73 [2021-11-07 01:41:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:03,061 INFO L470 AbstractCegarLoop]: Abstraction has 14876 states and 27822 transitions. [2021-11-07 01:41:03,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:41:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 27822 transitions. [2021-11-07 01:41:03,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:41:03,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:03,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:03,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 01:41:03,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:41:03,279 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:41:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 275337881, now seen corresponding path program 1 times [2021-11-07 01:41:03,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:41:03,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259138860] [2021-11-07 01:41:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:03,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:41:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:41:03,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:41:03,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e109cb4-fe43-4a83-a179-1f9bcc4510b4/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:41:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:03,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:41:03,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:41:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:04,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:41:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:04,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:41:04,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259138860] [2021-11-07 01:41:04,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259138860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:04,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:04,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:41:04,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821693248] [2021-11-07 01:41:04,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:41:04,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:41:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:41:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:41:04,479 INFO L87 Difference]: Start difference. First operand 14876 states and 27822 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)