./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.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_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/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_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/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_69d4c761-c4c3-45cc-918c-2163d6dd2538/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:25:00,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:25:00,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:25:00,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:25:00,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:25:00,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:25:00,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:25:00,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:25:00,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:25:00,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:25:00,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:25:00,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:25:00,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:25:00,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:25:00,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:25:00,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:25:00,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:25:00,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:25:00,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:25:00,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:25:00,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:25:00,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:25:00,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:25:00,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:25:00,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:25:00,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:25:00,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:25:00,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:25:00,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:25:00,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:25:00,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:25:00,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:25:00,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:25:00,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:25:00,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:25:00,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:25:00,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:25:00,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:25:00,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:25:00,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:25:00,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:25:00,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:25:00,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:25:00,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:25:00,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:25:00,683 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:25:00,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:25:00,683 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:25:00,683 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:25:00,684 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:25:00,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:25:00,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:25:00,684 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:25:00,684 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:25:00,685 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:25:00,685 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:25:00,685 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:25:00,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:25:00,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:25:00,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:25:00,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:25:00,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:25:00,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:25:00,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:25:00,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:25:00,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:25:00,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:25:00,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:25:00,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:25:00,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:25:00,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:25:00,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:25:00,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:25:00,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:25:00,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:25:00,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:25:00,696 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:25:00,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:25:00,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:25:00,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:25:00,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:25:00,698 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-07 02:25:00,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:25:00,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:25:00,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:25:00,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:25:00,968 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:25:00,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-07 02:25:01,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/9c473067e/2a859d7118384ae2b3241024d36db6c5/FLAG25f324107 [2021-11-07 02:25:01,677 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:25:01,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-07 02:25:01,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/9c473067e/2a859d7118384ae2b3241024d36db6c5/FLAG25f324107 [2021-11-07 02:25:01,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/9c473067e/2a859d7118384ae2b3241024d36db6c5 [2021-11-07 02:25:01,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:25:01,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:25:01,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:25:01,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:25:01,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:25:01,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:25:01" (1/1) ... [2021-11-07 02:25:01,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d25e788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:01, skipping insertion in model container [2021-11-07 02:25:01,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:25:01" (1/1) ... [2021-11-07 02:25:01,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:25:02,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:25:02,769 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-07 02:25:02,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:25:02,795 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 02:25:02,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@285666d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:02, skipping insertion in model container [2021-11-07 02:25:02,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:25:02,796 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:25:02,799 INFO L168 Benchmark]: Toolchain (without parser) took 911.71 ms. Allocated memory is still 115.3 MB. Free memory was 81.2 MB in the beginning and 74.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:25:02,801 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 115.3 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:25:02,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.03 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 74.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:25:02,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 115.3 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 909.03 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 74.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3118]: 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/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_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/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_69d4c761-c4c3-45cc-918c-2163d6dd2538/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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:25:05,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:25:05,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:25:05,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:25:05,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:25:05,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:25:05,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:25:05,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:25:05,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:25:05,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:25:05,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:25:05,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:25:05,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:25:05,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:25:05,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:25:05,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:25:05,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:25:05,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:25:05,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:25:05,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:25:05,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:25:05,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:25:05,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:25:05,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:25:05,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:25:05,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:25:05,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:25:05,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:25:05,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:25:05,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:25:05,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:25:05,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:25:05,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:25:05,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:25:05,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:25:05,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:25:05,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:25:05,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:25:05,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:25:05,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:25:05,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:25:05,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:25:05,266 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:25:05,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:25:05,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:25:05,269 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:25:05,269 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:25:05,269 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:25:05,269 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:25:05,270 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:25:05,270 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:25:05,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:25:05,272 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:25:05,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:25:05,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:25:05,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:25:05,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:25:05,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:25:05,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:25:05,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:25:05,274 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:25:05,275 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:25:05,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:25:05,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:25:05,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:25:05,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:25:05,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:25:05,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:25:05,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:25:05,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:25:05,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:25:05,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:25:05,277 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:25:05,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:25:05,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:25:05,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:25:05,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:25:05,279 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2021-11-07 02:25:05,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:25:05,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:25:05,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:25:05,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:25:05,757 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:25:05,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-07 02:25:05,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/2f28d860c/7f063b4f14764df1b8cf352a12cae5ba/FLAG6a989990a [2021-11-07 02:25:06,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:25:06,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2021-11-07 02:25:06,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/2f28d860c/7f063b4f14764df1b8cf352a12cae5ba/FLAG6a989990a [2021-11-07 02:25:06,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/data/2f28d860c/7f063b4f14764df1b8cf352a12cae5ba [2021-11-07 02:25:06,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:25:06,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:25:06,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:25:06,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:25:06,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:25:06,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:25:06" (1/1) ... [2021-11-07 02:25:06,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dc9771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:06, skipping insertion in model container [2021-11-07 02:25:06,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:25:06" (1/1) ... [2021-11-07 02:25:06,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:25:06,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:25:07,507 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-07 02:25:07,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:25:07,525 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:25:07,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:25:07,646 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-07 02:25:07,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:25:07,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:25:07,752 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_69d4c761-c4c3-45cc-918c-2163d6dd2538/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2021-11-07 02:25:07,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:25:07,827 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:25:07,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07 WrapperNode [2021-11-07 02:25:07,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:25:07,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:25:07,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:25:07,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:25:07,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:07,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:13,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:25:13,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:25:13,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:25:13,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:25:13,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:13,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:14,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:14,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:15,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:17,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:17,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:17,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:25:17,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:25:17,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:25:17,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:25:17,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (1/1) ... [2021-11-07 02:25:17,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:25:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:25:17,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:25:17,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:25:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 02:25:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:25:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:25:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:25:17,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:26:20,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:26:20,010 INFO L299 CfgBuilder]: Removed 36507 assume(true) statements. [2021-11-07 02:26:20,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:26:20 BoogieIcfgContainer [2021-11-07 02:26:20,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:26:20,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:26:20,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:26:20,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:26:20,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:25:06" (1/3) ... [2021-11-07 02:26:20,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ef7d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:26:20, skipping insertion in model container [2021-11-07 02:26:20,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:25:07" (2/3) ... [2021-11-07 02:26:20,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ef7d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:26:20, skipping insertion in model container [2021-11-07 02:26:20,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:26:20" (3/3) ... [2021-11-07 02:26:20,053 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2021-11-07 02:26:20,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:26:20,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-07 02:26:20,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:26:20,243 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 02:26:20,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-07 02:26:20,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 35284 states, 35219 states have (on average 1.6053550640279395) internal successors, (56539), 35283 states have internal predecessors, (56539), 0 states have call successors, (0), 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 02:26:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 02:26:20,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:20,751 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] [2021-11-07 02:26:20,752 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1708544396, now seen corresponding path program 1 times [2021-11-07 02:26:20,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:20,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475793046] [2021-11-07 02:26:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:20,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:20,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:20,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:20,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:26:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:26:21,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:21,450 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 02:26:21,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:26:21,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:21,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475793046] [2021-11-07 02:26:21,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475793046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:21,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:21,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:26:21,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899944302] [2021-11-07 02:26:21,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:26:21,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:26:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:26:21,667 INFO L87 Difference]: Start difference. First operand has 35284 states, 35219 states have (on average 1.6053550640279395) internal successors, (56539), 35283 states have internal predecessors, (56539), 0 states have call successors, (0), 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:22,953 INFO L93 Difference]: Finished difference Result 70233 states and 112466 transitions. [2021-11-07 02:26:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:26:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 02:26:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:23,132 INFO L225 Difference]: With dead ends: 70233 [2021-11-07 02:26:23,132 INFO L226 Difference]: Without dead ends: 23088 [2021-11-07 02:26:23,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 98 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 02:26:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23088 states. [2021-11-07 02:26:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23088 to 23088. [2021-11-07 02:26:24,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23088 states, 23024 states have (on average 1.6051077136900624) internal successors, (36956), 23087 states have internal predecessors, (36956), 0 states have call successors, (0), 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 02:26:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23088 states to 23088 states and 36956 transitions. [2021-11-07 02:26:24,506 INFO L78 Accepts]: Start accepts. Automaton has 23088 states and 36956 transitions. Word has length 50 [2021-11-07 02:26:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:24,507 INFO L470 AbstractCegarLoop]: Abstraction has 23088 states and 36956 transitions. [2021-11-07 02:26:24,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23088 states and 36956 transitions. [2021-11-07 02:26:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:26:24,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:24,518 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] [2021-11-07 02:26:24,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:26:24,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:24,739 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash -561131367, now seen corresponding path program 1 times [2021-11-07 02:26:24,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:24,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312456722] [2021-11-07 02:26:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:24,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:24,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:24,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:26:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:25,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:26:25,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:25,289 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 02:26:25,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:25,446 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 02:26:25,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:25,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312456722] [2021-11-07 02:26:25,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312456722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:25,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:25,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:26:25,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907091694] [2021-11-07 02:26:25,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:26:25,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:26:25,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:26:25,453 INFO L87 Difference]: Start difference. First operand 23088 states and 36956 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 02:26:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:26,762 INFO L93 Difference]: Finished difference Result 46151 states and 73874 transitions. [2021-11-07 02:26:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:26:26,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 02:26:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:26,886 INFO L225 Difference]: With dead ends: 46151 [2021-11-07 02:26:26,887 INFO L226 Difference]: Without dead ends: 23088 [2021-11-07 02:26:26,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:26:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23088 states. [2021-11-07 02:26:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23088 to 23088. [2021-11-07 02:26:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23088 states, 23024 states have (on average 1.604803683113273) internal successors, (36949), 23087 states have internal predecessors, (36949), 0 states have call successors, (0), 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 02:26:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23088 states to 23088 states and 36949 transitions. [2021-11-07 02:26:27,577 INFO L78 Accepts]: Start accepts. Automaton has 23088 states and 36949 transitions. Word has length 51 [2021-11-07 02:26:27,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:27,580 INFO L470 AbstractCegarLoop]: Abstraction has 23088 states and 36949 transitions. [2021-11-07 02:26:27,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 02:26:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 23088 states and 36949 transitions. [2021-11-07 02:26:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 02:26:27,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:27,592 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] [2021-11-07 02:26:27,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:27,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:27,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1165599801, now seen corresponding path program 1 times [2021-11-07 02:26:27,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:27,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269413019] [2021-11-07 02:26:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:27,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:27,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:27,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:27,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:26:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:28,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:28,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:28,418 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 02:26:28,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:28,575 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 02:26:28,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:28,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269413019] [2021-11-07 02:26:28,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269413019] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:28,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:28,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:26:28,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925216881] [2021-11-07 02:26:28,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:26:28,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:26:28,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:26:28,578 INFO L87 Difference]: Start difference. First operand 23088 states and 36949 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 02:26:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:31,767 INFO L93 Difference]: Finished difference Result 32954 states and 52951 transitions. [2021-11-07 02:26:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:31,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 56 [2021-11-07 02:26:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:31,793 INFO L225 Difference]: With dead ends: 32954 [2021-11-07 02:26:31,794 INFO L226 Difference]: Without dead ends: 9888 [2021-11-07 02:26:31,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 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 02:26:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9888 states. [2021-11-07 02:26:32,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9888 to 9888. [2021-11-07 02:26:32,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9888 states, 9824 states have (on average 1.623371335504886) internal successors, (15948), 9887 states have internal predecessors, (15948), 0 states have call successors, (0), 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 02:26:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9888 states to 9888 states and 15948 transitions. [2021-11-07 02:26:32,097 INFO L78 Accepts]: Start accepts. Automaton has 9888 states and 15948 transitions. Word has length 56 [2021-11-07 02:26:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:32,098 INFO L470 AbstractCegarLoop]: Abstraction has 9888 states and 15948 transitions. [2021-11-07 02:26:32,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 02:26:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 9888 states and 15948 transitions. [2021-11-07 02:26:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:26:32,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:32,102 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 02:26:32,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:32,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:32,321 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 382534275, now seen corresponding path program 1 times [2021-11-07 02:26:32,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:32,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230829236] [2021-11-07 02:26:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:32,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:32,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:32,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:32,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:26:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:32,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:32,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:32,908 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 02:26:32,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:33,049 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 02:26:33,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:33,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230829236] [2021-11-07 02:26:33,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230829236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:33,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:33,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:26:33,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799344782] [2021-11-07 02:26:33,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:33,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:33,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:26:33,052 INFO L87 Difference]: Start difference. First operand 9888 states and 15948 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 02:26:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:33,602 INFO L93 Difference]: Finished difference Result 19786 states and 32027 transitions. [2021-11-07 02:26:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 02:26:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:33,629 INFO L225 Difference]: With dead ends: 19786 [2021-11-07 02:26:33,629 INFO L226 Difference]: Without dead ends: 9918 [2021-11-07 02:26:33,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 02:26:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2021-11-07 02:26:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9734. [2021-11-07 02:26:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9734 states, 9670 states have (on average 1.6336091003102378) internal successors, (15797), 9733 states have internal predecessors, (15797), 0 states have call successors, (0), 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 02:26:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9734 states to 9734 states and 15797 transitions. [2021-11-07 02:26:34,147 INFO L78 Accepts]: Start accepts. Automaton has 9734 states and 15797 transitions. Word has length 57 [2021-11-07 02:26:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:34,148 INFO L470 AbstractCegarLoop]: Abstraction has 9734 states and 15797 transitions. [2021-11-07 02:26:34,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 02:26:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 9734 states and 15797 transitions. [2021-11-07 02:26:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 02:26:34,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:34,151 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] [2021-11-07 02:26:34,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:34,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:34,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash 576584458, now seen corresponding path program 1 times [2021-11-07 02:26:34,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:34,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454937469] [2021-11-07 02:26:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:34,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:34,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:34,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:34,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:26:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:34,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:34,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:35,012 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 02:26:35,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:35,156 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 02:26:35,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:35,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454937469] [2021-11-07 02:26:35,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454937469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:35,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:35,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:26:35,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411223490] [2021-11-07 02:26:35,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:26:35,159 INFO L87 Difference]: Start difference. First operand 9734 states and 15797 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:37,416 INFO L93 Difference]: Finished difference Result 9918 states and 16076 transitions. [2021-11-07 02:26:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 02:26:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:37,427 INFO L225 Difference]: With dead ends: 9918 [2021-11-07 02:26:37,428 INFO L226 Difference]: Without dead ends: 4250 [2021-11-07 02:26:37,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 02:26:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-11-07 02:26:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 4250. [2021-11-07 02:26:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4218 states have (on average 1.635846372688478) internal successors, (6900), 4249 states have internal predecessors, (6900), 0 states have call successors, (0), 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 02:26:37,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 6900 transitions. [2021-11-07 02:26:37,560 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 6900 transitions. Word has length 58 [2021-11-07 02:26:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:37,560 INFO L470 AbstractCegarLoop]: Abstraction has 4250 states and 6900 transitions. [2021-11-07 02:26:37,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:26:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 6900 transitions. [2021-11-07 02:26:37,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 02:26:37,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:37,563 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] [2021-11-07 02:26:37,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:37,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:37,779 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1383645699, now seen corresponding path program 1 times [2021-11-07 02:26:37,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:37,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202994864] [2021-11-07 02:26:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:37,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:37,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:37,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:26:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:38,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:38,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:38,434 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 02:26:38,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:38,604 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 02:26:38,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:38,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202994864] [2021-11-07 02:26:38,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202994864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:38,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:38,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:26:38,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232339925] [2021-11-07 02:26:38,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:38,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:38,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:26:38,607 INFO L87 Difference]: Start difference. First operand 4250 states and 6900 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 02:26:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:40,836 INFO L93 Difference]: Finished difference Result 8461 states and 13742 transitions. [2021-11-07 02:26:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:40,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 02:26:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:40,847 INFO L225 Difference]: With dead ends: 8461 [2021-11-07 02:26:40,848 INFO L226 Difference]: Without dead ends: 4247 [2021-11-07 02:26:40,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 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 02:26:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2021-11-07 02:26:41,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 4241. [2021-11-07 02:26:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 4209 states have (on average 1.6324542646709432) internal successors, (6871), 4240 states have internal predecessors, (6871), 0 states have call successors, (0), 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 02:26:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6871 transitions. [2021-11-07 02:26:41,093 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6871 transitions. Word has length 63 [2021-11-07 02:26:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:41,093 INFO L470 AbstractCegarLoop]: Abstraction has 4241 states and 6871 transitions. [2021-11-07 02:26:41,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 02:26:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6871 transitions. [2021-11-07 02:26:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 02:26:41,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:41,095 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] [2021-11-07 02:26:41,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:41,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:41,312 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -823390330, now seen corresponding path program 1 times [2021-11-07 02:26:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:41,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412735448] [2021-11-07 02:26:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:41,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:41,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:41,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:41,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:26:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:41,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:26:41,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:41,951 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 02:26:41,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:42,123 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 02:26:42,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:42,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412735448] [2021-11-07 02:26:42,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412735448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:42,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:42,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:26:42,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627930368] [2021-11-07 02:26:42,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:26:42,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:26:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:26:42,125 INFO L87 Difference]: Start difference. First operand 4241 states and 6871 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 02:26:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:42,842 INFO L93 Difference]: Finished difference Result 16835 states and 27313 transitions. [2021-11-07 02:26:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:26:42,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 69 [2021-11-07 02:26:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:42,934 INFO L225 Difference]: With dead ends: 16835 [2021-11-07 02:26:42,934 INFO L226 Difference]: Without dead ends: 12634 [2021-11-07 02:26:42,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:26:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2021-11-07 02:26:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 4240. [2021-11-07 02:26:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4240 states, 4208 states have (on average 1.6318916349809887) internal successors, (6867), 4239 states have internal predecessors, (6867), 0 states have call successors, (0), 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 02:26:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 6867 transitions. [2021-11-07 02:26:43,166 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 6867 transitions. Word has length 69 [2021-11-07 02:26:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:43,166 INFO L470 AbstractCegarLoop]: Abstraction has 4240 states and 6867 transitions. [2021-11-07 02:26:43,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 02:26:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 6867 transitions. [2021-11-07 02:26:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 02:26:43,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:43,168 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 02:26:43,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:43,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:43,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2100340719, now seen corresponding path program 1 times [2021-11-07 02:26:43,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:43,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263864709] [2021-11-07 02:26:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:43,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:43,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:43,386 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:43,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:26:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:26:43,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:44,012 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 02:26:44,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:44,215 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 02:26:44,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:44,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263864709] [2021-11-07 02:26:44,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263864709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:44,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:44,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:26:44,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887680376] [2021-11-07 02:26:44,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:26:44,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:26:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:26:44,217 INFO L87 Difference]: Start difference. First operand 4240 states and 6867 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 02:26:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:44,970 INFO L93 Difference]: Finished difference Result 16802 states and 27244 transitions. [2021-11-07 02:26:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:26:44,971 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 70 [2021-11-07 02:26:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:45,006 INFO L225 Difference]: With dead ends: 16802 [2021-11-07 02:26:45,007 INFO L226 Difference]: Without dead ends: 12605 [2021-11-07 02:26:45,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:26:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2021-11-07 02:26:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 4239. [2021-11-07 02:26:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4207 states have (on average 1.6313287378179224) internal successors, (6863), 4238 states have internal predecessors, (6863), 0 states have call successors, (0), 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 02:26:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6863 transitions. [2021-11-07 02:26:45,363 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6863 transitions. Word has length 70 [2021-11-07 02:26:45,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:45,364 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 6863 transitions. [2021-11-07 02:26:45,364 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 02:26:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6863 transitions. [2021-11-07 02:26:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 02:26:45,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:45,366 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 02:26:45,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:45,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:45,576 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1889326951, now seen corresponding path program 1 times [2021-11-07 02:26:45,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:45,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216098549] [2021-11-07 02:26:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:45,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:45,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:45,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:45,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:26:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:46,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:26:46,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:46,278 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 02:26:46,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:46,431 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 02:26:46,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:46,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216098549] [2021-11-07 02:26:46,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216098549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:46,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:46,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:26:46,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718585738] [2021-11-07 02:26:46,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:26:46,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:26:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:26:46,433 INFO L87 Difference]: Start difference. First operand 4239 states and 6863 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 02:26:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:46,662 INFO L93 Difference]: Finished difference Result 8442 states and 13684 transitions. [2021-11-07 02:26:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:26:46,662 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 71 [2021-11-07 02:26:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:46,672 INFO L225 Difference]: With dead ends: 8442 [2021-11-07 02:26:46,672 INFO L226 Difference]: Without dead ends: 4251 [2021-11-07 02:26:46,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:26:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-11-07 02:26:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4239. [2021-11-07 02:26:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4207 states have (on average 1.6306156405990018) internal successors, (6860), 4238 states have internal predecessors, (6860), 0 states have call successors, (0), 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 02:26:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6860 transitions. [2021-11-07 02:26:46,997 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6860 transitions. Word has length 71 [2021-11-07 02:26:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:46,998 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 6860 transitions. [2021-11-07 02:26:46,998 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 02:26:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6860 transitions. [2021-11-07 02:26:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 02:26:47,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:47,002 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 02:26:47,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:47,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:47,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1078361022, now seen corresponding path program 1 times [2021-11-07 02:26:47,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:47,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139775074] [2021-11-07 02:26:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:47,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:47,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:47,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:47,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:26:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:47,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:26:47,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:47,958 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 02:26:47,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:48,160 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 02:26:48,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:48,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139775074] [2021-11-07 02:26:48,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139775074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:48,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:48,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:26:48,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060357073] [2021-11-07 02:26:48,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:26:48,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:26:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:26:48,162 INFO L87 Difference]: Start difference. First operand 4239 states and 6860 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 02:26:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:49,045 INFO L93 Difference]: Finished difference Result 16788 states and 27218 transitions. [2021-11-07 02:26:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:26:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 02:26:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:49,069 INFO L225 Difference]: With dead ends: 16788 [2021-11-07 02:26:49,069 INFO L226 Difference]: Without dead ends: 12601 [2021-11-07 02:26:49,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:26:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-11-07 02:26:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 4239. [2021-11-07 02:26:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4207 states have (on average 1.629902543380081) internal successors, (6857), 4238 states have internal predecessors, (6857), 0 states have call successors, (0), 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 02:26:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6857 transitions. [2021-11-07 02:26:49,440 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6857 transitions. Word has length 73 [2021-11-07 02:26:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:49,442 INFO L470 AbstractCegarLoop]: Abstraction has 4239 states and 6857 transitions. [2021-11-07 02:26:49,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 02:26:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6857 transitions. [2021-11-07 02:26:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 02:26:49,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:49,445 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, 1] [2021-11-07 02:26:49,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:49,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:49,663 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash 692937859, now seen corresponding path program 1 times [2021-11-07 02:26:49,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:49,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532215199] [2021-11-07 02:26:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:49,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:49,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:49,665 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:49,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:26:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:50,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:50,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:50,388 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 02:26:50,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:50,522 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 02:26:50,522 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:50,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532215199] [2021-11-07 02:26:50,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532215199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:50,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:50,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:26:50,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618170388] [2021-11-07 02:26:50,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:26:50,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:26:50,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:26:50,525 INFO L87 Difference]: Start difference. First operand 4239 states and 6857 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 02:26:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:51,153 INFO L93 Difference]: Finished difference Result 12341 states and 19955 transitions. [2021-11-07 02:26:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:26:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 75 [2021-11-07 02:26:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:51,168 INFO L225 Difference]: With dead ends: 12341 [2021-11-07 02:26:51,168 INFO L226 Difference]: Without dead ends: 8426 [2021-11-07 02:26:51,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:26:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8426 states. [2021-11-07 02:26:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8426 to 4511. [2021-11-07 02:26:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 4479 states have (on average 1.6412145568207188) internal successors, (7351), 4510 states have internal predecessors, (7351), 0 states have call successors, (0), 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 02:26:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 7351 transitions. [2021-11-07 02:26:51,695 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 7351 transitions. Word has length 75 [2021-11-07 02:26:51,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:51,696 INFO L470 AbstractCegarLoop]: Abstraction has 4511 states and 7351 transitions. [2021-11-07 02:26:51,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 02:26:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 7351 transitions. [2021-11-07 02:26:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 02:26:51,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:51,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:51,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:51,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:51,919 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1630519786, now seen corresponding path program 1 times [2021-11-07 02:26:51,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:51,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582147387] [2021-11-07 02:26:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:51,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:51,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:51,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:51,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:26:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:52,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:52,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:52,751 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 02:26:52,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:52,936 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 02:26:52,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:52,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582147387] [2021-11-07 02:26:52,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582147387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:52,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:52,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:26:52,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463197855] [2021-11-07 02:26:52,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:52,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:26:52,939 INFO L87 Difference]: Start difference. First operand 4511 states and 7351 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 02:26:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:53,559 INFO L93 Difference]: Finished difference Result 13045 states and 21236 transitions. [2021-11-07 02:26:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-07 02:26:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:53,573 INFO L225 Difference]: With dead ends: 13045 [2021-11-07 02:26:53,573 INFO L226 Difference]: Without dead ends: 8645 [2021-11-07 02:26:53,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 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 02:26:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8645 states. [2021-11-07 02:26:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8645 to 4730. [2021-11-07 02:26:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4698 states have (on average 1.6489995742869306) internal successors, (7747), 4729 states have internal predecessors, (7747), 0 states have call successors, (0), 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 02:26:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 7747 transitions. [2021-11-07 02:26:54,080 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 7747 transitions. Word has length 87 [2021-11-07 02:26:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:54,081 INFO L470 AbstractCegarLoop]: Abstraction has 4730 states and 7747 transitions. [2021-11-07 02:26:54,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 02:26:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 7747 transitions. [2021-11-07 02:26:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 02:26:54,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:54,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:54,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:54,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:54,300 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:54,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash -195018581, now seen corresponding path program 1 times [2021-11-07 02:26:54,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:54,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194303547] [2021-11-07 02:26:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:54,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:54,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:54,315 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:54,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:26:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:54,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:54,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:55,150 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 02:26:55,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:55,313 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 02:26:55,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:55,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194303547] [2021-11-07 02:26:55,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194303547] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:55,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:55,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:26:55,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846238906] [2021-11-07 02:26:55,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:55,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:55,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:26:55,316 INFO L87 Difference]: Start difference. First operand 4730 states and 7747 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 02:26:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:55,982 INFO L93 Difference]: Finished difference Result 13732 states and 22484 transitions. [2021-11-07 02:26:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:55,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-07 02:26:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:55,995 INFO L225 Difference]: With dead ends: 13732 [2021-11-07 02:26:55,995 INFO L226 Difference]: Without dead ends: 9122 [2021-11-07 02:26:56,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 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 02:26:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2021-11-07 02:26:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 5207. [2021-11-07 02:26:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5175 states have (on average 1.6641545893719807) internal successors, (8612), 5206 states have internal predecessors, (8612), 0 states have call successors, (0), 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 02:26:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 8612 transitions. [2021-11-07 02:26:56,489 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 8612 transitions. Word has length 88 [2021-11-07 02:26:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:56,489 INFO L470 AbstractCegarLoop]: Abstraction has 5207 states and 8612 transitions. [2021-11-07 02:26:56,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 02:26:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 8612 transitions. [2021-11-07 02:26:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 02:26:56,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:56,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:56,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:56,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:56,707 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:56,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash 228660706, now seen corresponding path program 1 times [2021-11-07 02:26:56,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:56,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123348237] [2021-11-07 02:26:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:56,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:56,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:56,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:26:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:57,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:57,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:26:57,573 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 02:26:57,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:26:57,763 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 02:26:57,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:26:57,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123348237] [2021-11-07 02:26:57,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123348237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:26:57,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:26:57,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:26:57,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110304788] [2021-11-07 02:26:57,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:26:57,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:26:57,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:26:57,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:26:57,765 INFO L87 Difference]: Start difference. First operand 5207 states and 8612 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 02:26:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:58,525 INFO L93 Difference]: Finished difference Result 15140 states and 25047 transitions. [2021-11-07 02:26:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:26:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-07 02:26:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:58,540 INFO L225 Difference]: With dead ends: 15140 [2021-11-07 02:26:58,540 INFO L226 Difference]: Without dead ends: 10062 [2021-11-07 02:26:58,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 02:26:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2021-11-07 02:26:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 6147. [2021-11-07 02:26:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 6115 states have (on average 1.6878168438266559) internal successors, (10321), 6146 states have internal predecessors, (10321), 0 states have call successors, (0), 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 02:26:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 10321 transitions. [2021-11-07 02:26:59,037 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 10321 transitions. Word has length 89 [2021-11-07 02:26:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:59,038 INFO L470 AbstractCegarLoop]: Abstraction has 6147 states and 10321 transitions. [2021-11-07 02:26:59,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 02:26:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 10321 transitions. [2021-11-07 02:26:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 02:26:59,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:59,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:59,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:59,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:59,243 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:26:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:59,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1639090558, now seen corresponding path program 1 times [2021-11-07 02:26:59,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:59,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970997285] [2021-11-07 02:26:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:59,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:59,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:59,247 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:59,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:26:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:26:59,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:26:59,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:00,195 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 02:27:00,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:00,389 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 02:27:00,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:00,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970997285] [2021-11-07 02:27:00,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970997285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:00,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:27:00,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:27:00,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191488398] [2021-11-07 02:27:00,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:27:00,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:27:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:27:00,391 INFO L87 Difference]: Start difference. First operand 6147 states and 10321 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 02:27:01,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:27:01,233 INFO L93 Difference]: Finished difference Result 17691 states and 29688 transitions. [2021-11-07 02:27:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:27:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 02:27:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:27:01,248 INFO L225 Difference]: With dead ends: 17691 [2021-11-07 02:27:01,248 INFO L226 Difference]: Without dead ends: 11708 [2021-11-07 02:27:01,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 02:27:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2021-11-07 02:27:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 7793. [2021-11-07 02:27:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7761 states have (on average 1.7149851823218658) internal successors, (13310), 7792 states have internal predecessors, (13310), 0 states have call successors, (0), 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 02:27:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 13310 transitions. [2021-11-07 02:27:01,792 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 13310 transitions. Word has length 90 [2021-11-07 02:27:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:27:01,793 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 13310 transitions. [2021-11-07 02:27:01,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 02:27:01,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 13310 transitions. [2021-11-07 02:27:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 02:27:01,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:27:01,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:27:01,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-07 02:27:02,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:27:02,009 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:27:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:27:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash 937517067, now seen corresponding path program 1 times [2021-11-07 02:27:02,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:27:02,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932461896] [2021-11-07 02:27:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:27:02,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:27:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:27:02,012 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:27:02,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69d4c761-c4c3-45cc-918c-2163d6dd2538/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:27:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:02,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:27:02,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:02,975 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 02:27:02,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:27:03,159 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 02:27:03,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:27:03,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932461896] [2021-11-07 02:27:03,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932461896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:27:03,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:27:03,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:27:03,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836021758] [2021-11-07 02:27:03,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:27:03,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:27:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:27:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:27:03,161 INFO L87 Difference]: Start difference. First operand 7793 states and 13310 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)