./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH --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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:44:32,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:44:32,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:44:32,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:44:32,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:44:32,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:44:32,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:44:32,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:44:32,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:44:32,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:44:32,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:44:32,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:44:32,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:44:32,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:44:32,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:44:32,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:44:32,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:44:32,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:44:32,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:44:32,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:44:32,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:44:32,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:44:32,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:44:32,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:44:32,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:44:32,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:44:32,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:44:32,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:44:32,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:44:32,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:44:32,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:44:32,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:44:32,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:44:32,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:44:32,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:44:32,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:44:32,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:44:32,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:44:32,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:44:32,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:44:32,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:44:32,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:44:32,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:44:32,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:44:32,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:44:32,866 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:44:32,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:44:32,867 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:44:32,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:44:32,867 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:44:32,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:44:32,868 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:44:32,875 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:44:32,875 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:44:32,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:44:32,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:44:32,876 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:44:32,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:44:32,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:44:32,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:44:32,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:44:32,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:44:32,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:44:32,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:44:32,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:44:32,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:44:32,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:44:32,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:44:32,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:44:32,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:44:32,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:44:32,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:44:32,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:32,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:44:32,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:44:32,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:44:32,883 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:44:32,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:44:32,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:44:32,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:44:32,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:44:32,884 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-03 03:44:33,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:44:33,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:44:33,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:44:33,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:44:33,211 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:44:33,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-03 03:44:33,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/8dca414d9/5ff0aba4f004438eac146271b4863252/FLAGc5a92d408 [2021-11-03 03:44:33,868 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:44:33,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-03 03:44:33,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/8dca414d9/5ff0aba4f004438eac146271b4863252/FLAGc5a92d408 [2021-11-03 03:44:34,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/8dca414d9/5ff0aba4f004438eac146271b4863252 [2021-11-03 03:44:34,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:44:34,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:44:34,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:34,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:44:34,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:44:34,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:34" (1/1) ... [2021-11-03 03:44:34,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70079301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:34, skipping insertion in model container [2021-11-03 03:44:34,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:34" (1/1) ... [2021-11-03 03:44:34,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:44:34,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:34,393 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-03 03:44:34,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:34,733 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) [2021-11-03 03:44:34,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5aa0c218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:34, skipping insertion in model container [2021-11-03 03:44:34,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:34,734 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:44:34,737 INFO L168 Benchmark]: Toolchain (without parser) took 636.22 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 73.9 MB in the beginning and 91.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:34,739 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:44:34,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.76 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 73.6 MB in the beginning and 91.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 03:44:34,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 633.76 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 73.6 MB in the beginning and 91.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1419]: 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH --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 bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:44:36,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:44:36,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:44:37,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:44:37,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:44:37,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:44:37,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:44:37,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:44:37,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:44:37,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:44:37,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:44:37,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:44:37,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:44:37,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:44:37,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:44:37,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:44:37,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:44:37,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:44:37,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:44:37,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:44:37,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:44:37,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:44:37,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:44:37,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:44:37,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:44:37,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:44:37,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:44:37,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:44:37,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:44:37,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:44:37,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:44:37,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:44:37,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:44:37,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:44:37,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:44:37,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:44:37,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:44:37,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:44:37,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:44:37,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:44:37,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:44:37,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:44:37,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:44:37,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:44:37,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:44:37,096 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:44:37,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:44:37,097 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:44:37,097 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:44:37,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:44:37,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:44:37,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:44:37,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:44:37,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:44:37,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:44:37,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:44:37,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:44:37,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:44:37,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:44:37,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:44:37,100 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:44:37,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:44:37,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:44:37,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:44:37,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:44:37,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:44:37,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:44:37,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:44:37,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:37,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:44:37,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:44:37,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:44:37,102 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:44:37,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:44:37,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:44:37,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:44:37,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:44:37,103 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2021-11-03 03:44:37,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:44:37,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:44:37,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:44:37,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:44:37,507 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:44:37,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-03 03:44:37,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/e96832b90/46cf6ad893a54bf5aea8a6771233cb8e/FLAG105b048a8 [2021-11-03 03:44:38,334 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:44:38,335 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2021-11-03 03:44:38,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/e96832b90/46cf6ad893a54bf5aea8a6771233cb8e/FLAG105b048a8 [2021-11-03 03:44:38,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/data/e96832b90/46cf6ad893a54bf5aea8a6771233cb8e [2021-11-03 03:44:38,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:44:38,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:44:38,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:38,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:44:38,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:44:38,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:38" (1/1) ... [2021-11-03 03:44:38,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fba048b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:38, skipping insertion in model container [2021-11-03 03:44:38,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:44:38" (1/1) ... [2021-11-03 03:44:38,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:44:38,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:38,795 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-03 03:44:39,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:39,234 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:44:39,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:44:39,265 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-03 03:44:39,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:39,449 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:44:39,474 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_b03f5230-43ad-42d3-9419-0e4a14107c6a/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2021-11-03 03:44:39,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:44:39,632 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:44:39,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39 WrapperNode [2021-11-03 03:44:39,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:44:39,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:44:39,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:44:39,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:44:39,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:39,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:39,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:44:39,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:44:39,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:44:39,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:44:39,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:39,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:39,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:39,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:40,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:40,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:40,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:40,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:44:40,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:44:40,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:44:40,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:44:40,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (1/1) ... [2021-11-03 03:44:40,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:44:40,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:44:40,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:44:40,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:44:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:44:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:44:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:44:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:44:51,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:44:51,492 INFO L299 CfgBuilder]: Removed 809 assume(true) statements. [2021-11-03 03:44:51,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:51 BoogieIcfgContainer [2021-11-03 03:44:51,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:44:51,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:44:51,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:44:51,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:44:51,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:44:38" (1/3) ... [2021-11-03 03:44:51,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e3da36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:51, skipping insertion in model container [2021-11-03 03:44:51,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:44:39" (2/3) ... [2021-11-03 03:44:51,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e3da36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:44:51, skipping insertion in model container [2021-11-03 03:44:51,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:44:51" (3/3) ... [2021-11-03 03:44:51,507 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2021-11-03 03:44:51,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:44:51,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 03:44:51,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:44:51,588 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 [2021-11-03 03:44:51,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 03:44:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 3566 states, 3560 states have (on average 1.8935393258426967) internal successors, (6741), 3565 states have internal predecessors, (6741), 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) [2021-11-03 03:44:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 03:44:51,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:51,695 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] [2021-11-03 03:44:51,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:44:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -146225728, now seen corresponding path program 1 times [2021-11-03 03:44:51,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:51,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357200862] [2021-11-03 03:44:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:51,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:51,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:51,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:51,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:44:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:52,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:44:52,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:52,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:52,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:52,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357200862] [2021-11-03 03:44:52,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357200862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:52,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:52,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:44:52,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034445759] [2021-11-03 03:44:52,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:44:52,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:44:52,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:44:52,493 INFO L87 Difference]: Start difference. First operand has 3566 states, 3560 states have (on average 1.8935393258426967) internal successors, (6741), 3565 states have internal predecessors, (6741), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-03 03:44:52,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:52,636 INFO L93 Difference]: Finished difference Result 3585 states and 6764 transitions. [2021-11-03 03:44:52,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:44:52,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-03 03:44:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:52,681 INFO L225 Difference]: With dead ends: 3585 [2021-11-03 03:44:52,682 INFO L226 Difference]: Without dead ends: 3562 [2021-11-03 03:44:52,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:44:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-03 03:44:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-11-03 03:44:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3557 states have (on average 1.8917627213944335) internal successors, (6729), 3561 states have internal predecessors, (6729), 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) [2021-11-03 03:44:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6729 transitions. [2021-11-03 03:44:52,873 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6729 transitions. Word has length 42 [2021-11-03 03:44:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:52,874 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 6729 transitions. [2021-11-03 03:44:52,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-03 03:44:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6729 transitions. [2021-11-03 03:44:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:44:52,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:52,880 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] [2021-11-03 03:44:52,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:53,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:53,096 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:44:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1672867975, now seen corresponding path program 1 times [2021-11-03 03:44:53,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:53,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214003760] [2021-11-03 03:44:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:53,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:53,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:53,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:53,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:44:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:53,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:53,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:53,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:53,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:53,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214003760] [2021-11-03 03:44:53,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214003760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:53,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:53,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:44:53,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186854563] [2021-11-03 03:44:53,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:53,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:53,707 INFO L87 Difference]: Start difference. First operand 3562 states and 6729 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:53,931 INFO L93 Difference]: Finished difference Result 7111 states and 13439 transitions. [2021-11-03 03:44:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 03:44:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:53,956 INFO L225 Difference]: With dead ends: 7111 [2021-11-03 03:44:53,956 INFO L226 Difference]: Without dead ends: 3562 [2021-11-03 03:44:53,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-03 03:44:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2021-11-03 03:44:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3557 states have (on average 1.8900759066629182) internal successors, (6723), 3561 states have internal predecessors, (6723), 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) [2021-11-03 03:44:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6723 transitions. [2021-11-03 03:44:54,162 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6723 transitions. Word has length 44 [2021-11-03 03:44:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:54,162 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 6723 transitions. [2021-11-03 03:44:54,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6723 transitions. [2021-11-03 03:44:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 03:44:54,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:54,175 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] [2021-11-03 03:44:54,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:54,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:54,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:44:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1616398097, now seen corresponding path program 1 times [2021-11-03 03:44:54,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:54,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136042976] [2021-11-03 03:44:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:54,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:54,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:54,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:54,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:44:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:54,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:44:54,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:54,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:55,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:55,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136042976] [2021-11-03 03:44:55,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136042976] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:55,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:55,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:44:55,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196476997] [2021-11-03 03:44:55,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:55,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:55,079 INFO L87 Difference]: Start difference. First operand 3562 states and 6723 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:55,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:55,361 INFO L93 Difference]: Finished difference Result 7075 states and 13362 transitions. [2021-11-03 03:44:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:55,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 03:44:55,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:55,385 INFO L225 Difference]: With dead ends: 7075 [2021-11-03 03:44:55,385 INFO L226 Difference]: Without dead ends: 3535 [2021-11-03 03:44:55,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:44:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-03 03:44:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2021-11-03 03:44:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3530 states have (on average 1.8886685552407931) internal successors, (6667), 3534 states have internal predecessors, (6667), 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) [2021-11-03 03:44:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6667 transitions. [2021-11-03 03:44:55,594 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6667 transitions. Word has length 49 [2021-11-03 03:44:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:55,595 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 6667 transitions. [2021-11-03 03:44:55,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6667 transitions. [2021-11-03 03:44:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 03:44:55,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:55,601 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] [2021-11-03 03:44:55,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:55,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:55,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:44:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 176969011, now seen corresponding path program 1 times [2021-11-03 03:44:55,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:55,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098652591] [2021-11-03 03:44:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:55,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:55,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:55,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:55,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:44:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:56,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:56,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:56,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:56,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:56,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098652591] [2021-11-03 03:44:56,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098652591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:56,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:56,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:44:56,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601291234] [2021-11-03 03:44:56,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:56,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:56,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:56,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:56,489 INFO L87 Difference]: Start difference. First operand 3535 states and 6667 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:56,734 INFO L93 Difference]: Finished difference Result 7048 states and 13306 transitions. [2021-11-03 03:44:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:56,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 03:44:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:56,757 INFO L225 Difference]: With dead ends: 7048 [2021-11-03 03:44:56,757 INFO L226 Difference]: Without dead ends: 3535 [2021-11-03 03:44:56,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-03 03:44:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2021-11-03 03:44:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3530 states have (on average 1.886968838526912) internal successors, (6661), 3534 states have internal predecessors, (6661), 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) [2021-11-03 03:44:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6661 transitions. [2021-11-03 03:44:56,929 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6661 transitions. Word has length 50 [2021-11-03 03:44:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:56,931 INFO L470 AbstractCegarLoop]: Abstraction has 3535 states and 6661 transitions. [2021-11-03 03:44:56,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6661 transitions. [2021-11-03 03:44:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:44:56,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:56,935 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] [2021-11-03 03:44:56,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:57,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:57,150 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:44:57,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:57,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2108092548, now seen corresponding path program 1 times [2021-11-03 03:44:57,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:57,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036122373] [2021-11-03 03:44:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:57,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:57,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:57,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:57,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:44:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:57,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:44:57,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:57,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:58,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:58,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036122373] [2021-11-03 03:44:58,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036122373] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:58,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:58,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:44:58,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440709846] [2021-11-03 03:44:58,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:44:58,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:44:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:58,014 INFO L87 Difference]: Start difference. First operand 3535 states and 6661 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2021-11-03 03:44:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:58,300 INFO L93 Difference]: Finished difference Result 7042 states and 13289 transitions. [2021-11-03 03:44:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:44:58,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 03:44:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:58,321 INFO L225 Difference]: With dead ends: 7042 [2021-11-03 03:44:58,321 INFO L226 Difference]: Without dead ends: 3532 [2021-11-03 03:44:58,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-11-03 03:44:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3532. [2021-11-03 03:44:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3527 states have (on average 1.8863056421888291) internal successors, (6653), 3531 states have internal predecessors, (6653), 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) [2021-11-03 03:44:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 6653 transitions. [2021-11-03 03:44:58,467 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 6653 transitions. Word has length 55 [2021-11-03 03:44:58,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:58,467 INFO L470 AbstractCegarLoop]: Abstraction has 3532 states and 6653 transitions. [2021-11-03 03:44:58,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2021-11-03 03:44:58,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 6653 transitions. [2021-11-03 03:44:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 03:44:58,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:58,471 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] [2021-11-03 03:44:58,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:58,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:58,684 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:44:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -461174188, now seen corresponding path program 1 times [2021-11-03 03:44:58,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:58,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29187227] [2021-11-03 03:44:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:58,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:58,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:58,687 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:58,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:44:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:59,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:44:59,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:44:59,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:00,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:00,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29187227] [2021-11-03 03:45:00,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29187227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:00,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:00,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:45:00,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648775728] [2021-11-03 03:45:00,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:45:00,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:00,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:45:00,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:45:00,563 INFO L87 Difference]: Start difference. First operand 3532 states and 6653 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:05,757 INFO L93 Difference]: Finished difference Result 11275 states and 21302 transitions. [2021-11-03 03:45:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:45:05,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 03:45:05,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:05,815 INFO L225 Difference]: With dead ends: 11275 [2021-11-03 03:45:05,816 INFO L226 Difference]: Without dead ends: 7785 [2021-11-03 03:45:05,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:45:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-11-03 03:45:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 5020. [2021-11-03 03:45:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 5015 states have (on average 1.8885343968095714) internal successors, (9471), 5019 states have internal predecessors, (9471), 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) [2021-11-03 03:45:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 9471 transitions. [2021-11-03 03:45:06,198 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 9471 transitions. Word has length 56 [2021-11-03 03:45:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:06,199 INFO L470 AbstractCegarLoop]: Abstraction has 5020 states and 9471 transitions. [2021-11-03 03:45:06,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 9471 transitions. [2021-11-03 03:45:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:45:06,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:06,203 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] [2021-11-03 03:45:06,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:06,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:06,423 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -533356624, now seen corresponding path program 1 times [2021-11-03 03:45:06,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:06,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581157806] [2021-11-03 03:45:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:06,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:06,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:06,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:06,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:45:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:06,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:45:06,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:07,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:07,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:07,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581157806] [2021-11-03 03:45:07,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581157806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:07,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:07,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:45:07,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633675063] [2021-11-03 03:45:07,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:45:07,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:45:07,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:45:07,383 INFO L87 Difference]: Start difference. First operand 5020 states and 9471 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:12,357 INFO L93 Difference]: Finished difference Result 21408 states and 40250 transitions. [2021-11-03 03:45:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:45:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 03:45:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:12,395 INFO L225 Difference]: With dead ends: 21408 [2021-11-03 03:45:12,395 INFO L226 Difference]: Without dead ends: 16429 [2021-11-03 03:45:12,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:45:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2021-11-03 03:45:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 5026. [2021-11-03 03:45:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5021 states have (on average 1.887472615016929) internal successors, (9477), 5025 states have internal predecessors, (9477), 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) [2021-11-03 03:45:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 9477 transitions. [2021-11-03 03:45:12,745 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 9477 transitions. Word has length 57 [2021-11-03 03:45:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 5026 states and 9477 transitions. [2021-11-03 03:45:12,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 9477 transitions. [2021-11-03 03:45:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 03:45:12,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:12,749 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] [2021-11-03 03:45:12,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:12,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:12,964 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash -653204394, now seen corresponding path program 1 times [2021-11-03 03:45:12,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:12,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642843580] [2021-11-03 03:45:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:12,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:12,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:12,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:45:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:13,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:45:13,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:13,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:13,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:13,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642843580] [2021-11-03 03:45:13,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642843580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:13,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:13,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:45:13,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547063647] [2021-11-03 03:45:13,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:45:13,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:45:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:45:13,719 INFO L87 Difference]: Start difference. First operand 5026 states and 9477 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:23,283 INFO L93 Difference]: Finished difference Result 17286 states and 32564 transitions. [2021-11-03 03:45:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:45:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 [2021-11-03 03:45:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:23,320 INFO L225 Difference]: With dead ends: 17286 [2021-11-03 03:45:23,320 INFO L226 Difference]: Without dead ends: 13884 [2021-11-03 03:45:23,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:45:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13884 states. [2021-11-03 03:45:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13884 to 8696. [2021-11-03 03:45:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8696 states, 8691 states have (on average 1.8842480727189046) internal successors, (16376), 8695 states have internal predecessors, (16376), 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) [2021-11-03 03:45:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8696 states to 8696 states and 16376 transitions. [2021-11-03 03:45:23,905 INFO L78 Accepts]: Start accepts. Automaton has 8696 states and 16376 transitions. Word has length 58 [2021-11-03 03:45:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:23,906 INFO L470 AbstractCegarLoop]: Abstraction has 8696 states and 16376 transitions. [2021-11-03 03:45:23,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 8696 states and 16376 transitions. [2021-11-03 03:45:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 03:45:23,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:23,911 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:23,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:24,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:24,128 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1221398247, now seen corresponding path program 1 times [2021-11-03 03:45:24,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:24,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274424304] [2021-11-03 03:45:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:24,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:24,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:24,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:24,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:45:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:24,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:45:24,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:24,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:24,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:24,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274424304] [2021-11-03 03:45:24,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274424304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:24,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:24,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:45:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961356321] [2021-11-03 03:45:24,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:45:24,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:24,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:45:24,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:45:24,922 INFO L87 Difference]: Start difference. First operand 8696 states and 16376 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:28,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:28,900 INFO L93 Difference]: Finished difference Result 20786 states and 38938 transitions. [2021-11-03 03:45:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:45:28,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 03:45:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:28,935 INFO L225 Difference]: With dead ends: 20786 [2021-11-03 03:45:28,935 INFO L226 Difference]: Without dead ends: 13688 [2021-11-03 03:45:28,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:45:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13688 states. [2021-11-03 03:45:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13688 to 8673. [2021-11-03 03:45:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8673 states, 8668 states have (on average 1.852445777572681) internal successors, (16057), 8672 states have internal predecessors, (16057), 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) [2021-11-03 03:45:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8673 states to 8673 states and 16057 transitions. [2021-11-03 03:45:29,433 INFO L78 Accepts]: Start accepts. Automaton has 8673 states and 16057 transitions. Word has length 59 [2021-11-03 03:45:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:29,433 INFO L470 AbstractCegarLoop]: Abstraction has 8673 states and 16057 transitions. [2021-11-03 03:45:29,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8673 states and 16057 transitions. [2021-11-03 03:45:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 03:45:29,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:29,436 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] [2021-11-03 03:45:29,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:29,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:29,653 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1553234110, now seen corresponding path program 1 times [2021-11-03 03:45:29,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:29,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64826518] [2021-11-03 03:45:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:29,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:29,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:29,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:29,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:45:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:30,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:45:30,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:30,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:30,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:30,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64826518] [2021-11-03 03:45:30,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64826518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:30,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:30,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:45:30,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605488047] [2021-11-03 03:45:30,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:45:30,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:45:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:45:30,503 INFO L87 Difference]: Start difference. First operand 8673 states and 16057 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:32,722 INFO L93 Difference]: Finished difference Result 58848 states and 109377 transitions. [2021-11-03 03:45:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:45:32,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 03:45:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:32,802 INFO L225 Difference]: With dead ends: 58848 [2021-11-03 03:45:32,802 INFO L226 Difference]: Without dead ends: 50212 [2021-11-03 03:45:32,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:45:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50212 states. [2021-11-03 03:45:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50212 to 13574. [2021-11-03 03:45:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13569 states have (on average 1.854300243201415) internal successors, (25161), 13573 states have internal predecessors, (25161), 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) [2021-11-03 03:45:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 25161 transitions. [2021-11-03 03:45:33,798 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 25161 transitions. Word has length 60 [2021-11-03 03:45:33,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:33,799 INFO L470 AbstractCegarLoop]: Abstraction has 13574 states and 25161 transitions. [2021-11-03 03:45:33,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 25161 transitions. [2021-11-03 03:45:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 03:45:33,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:33,802 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] [2021-11-03 03:45:33,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:34,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:34,019 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:34,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:34,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1114412719, now seen corresponding path program 1 times [2021-11-03 03:45:34,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:34,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219164957] [2021-11-03 03:45:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:34,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:34,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:34,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:34,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:45:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:34,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:34,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:34,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:34,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:34,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219164957] [2021-11-03 03:45:34,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219164957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:34,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:34,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:45:34,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103688055] [2021-11-03 03:45:34,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:34,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:34,889 INFO L87 Difference]: Start difference. First operand 13574 states and 25161 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-11-03 03:45:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:35,801 INFO L93 Difference]: Finished difference Result 34971 states and 64870 transitions. [2021-11-03 03:45:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 03:45:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:35,826 INFO L225 Difference]: With dead ends: 34971 [2021-11-03 03:45:35,826 INFO L226 Difference]: Without dead ends: 23280 [2021-11-03 03:45:35,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23280 states. [2021-11-03 03:45:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23280 to 23265. [2021-11-03 03:45:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23265 states, 23260 states have (on average 1.855116079105761) internal successors, (43150), 23264 states have internal predecessors, (43150), 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) [2021-11-03 03:45:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23265 states to 23265 states and 43150 transitions. [2021-11-03 03:45:36,876 INFO L78 Accepts]: Start accepts. Automaton has 23265 states and 43150 transitions. Word has length 61 [2021-11-03 03:45:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:36,876 INFO L470 AbstractCegarLoop]: Abstraction has 23265 states and 43150 transitions. [2021-11-03 03:45:36,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-11-03 03:45:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23265 states and 43150 transitions. [2021-11-03 03:45:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 03:45:36,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:36,880 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] [2021-11-03 03:45:36,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 03:45:37,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:37,095 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1704268535, now seen corresponding path program 1 times [2021-11-03 03:45:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:37,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883460168] [2021-11-03 03:45:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:37,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:37,097 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:37,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 03:45:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:37,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:37,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:37,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:38,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:38,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883460168] [2021-11-03 03:45:38,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883460168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:38,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:38,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:45:38,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269087236] [2021-11-03 03:45:38,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:38,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:38,009 INFO L87 Difference]: Start difference. First operand 23265 states and 43150 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:39,747 INFO L93 Difference]: Finished difference Result 62731 states and 116369 transitions. [2021-11-03 03:45:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:39,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-03 03:45:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:39,794 INFO L225 Difference]: With dead ends: 62731 [2021-11-03 03:45:39,794 INFO L226 Difference]: Without dead ends: 42466 [2021-11-03 03:45:39,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42466 states. [2021-11-03 03:45:41,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42466 to 42451. [2021-11-03 03:45:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42451 states, 42446 states have (on average 1.8551571408377703) internal successors, (78744), 42450 states have internal predecessors, (78744), 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) [2021-11-03 03:45:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42451 states to 42451 states and 78744 transitions. [2021-11-03 03:45:41,505 INFO L78 Accepts]: Start accepts. Automaton has 42451 states and 78744 transitions. Word has length 62 [2021-11-03 03:45:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:41,505 INFO L470 AbstractCegarLoop]: Abstraction has 42451 states and 78744 transitions. [2021-11-03 03:45:41,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:45:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 42451 states and 78744 transitions. [2021-11-03 03:45:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 03:45:41,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:41,508 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] [2021-11-03 03:45:41,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:41,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:41,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:41,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1209582794, now seen corresponding path program 1 times [2021-11-03 03:45:41,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:41,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235535420] [2021-11-03 03:45:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:41,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:41,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:41,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:41,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:45:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:42,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:42,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:42,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:42,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:42,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235535420] [2021-11-03 03:45:42,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235535420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:42,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:42,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:45:42,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819838380] [2021-11-03 03:45:42,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:42,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:42,643 INFO L87 Difference]: Start difference. First operand 42451 states and 78744 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) [2021-11-03 03:45:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:45,671 INFO L93 Difference]: Finished difference Result 117859 states and 218550 transitions. [2021-11-03 03:45:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:45,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 [2021-11-03 03:45:45,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:45,786 INFO L225 Difference]: With dead ends: 117859 [2021-11-03 03:45:45,786 INFO L226 Difference]: Without dead ends: 80416 [2021-11-03 03:45:45,819 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 [2021-11-03 03:45:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80416 states. [2021-11-03 03:45:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80416 to 80401. [2021-11-03 03:45:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80401 states, 80396 states have (on average 1.8541469724861934) internal successors, (149066), 80400 states have internal predecessors, (149066), 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) [2021-11-03 03:45:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80401 states to 80401 states and 149066 transitions. [2021-11-03 03:45:49,639 INFO L78 Accepts]: Start accepts. Automaton has 80401 states and 149066 transitions. Word has length 63 [2021-11-03 03:45:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:45:49,639 INFO L470 AbstractCegarLoop]: Abstraction has 80401 states and 149066 transitions. [2021-11-03 03:45:49,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) [2021-11-03 03:45:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand 80401 states and 149066 transitions. [2021-11-03 03:45:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 03:45:49,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:45:49,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:45:49,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:45:49,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:45:49,849 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:45:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:45:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1453847154, now seen corresponding path program 1 times [2021-11-03 03:45:49,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:45:49,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251983020] [2021-11-03 03:45:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:45:49,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:45:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:45:49,851 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:45:49,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b03f5230-43ad-42d3-9419-0e4a14107c6a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:45:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:45:50,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:45:50,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:45:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:50,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:45:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:45:50,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:45:50,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251983020] [2021-11-03 03:45:50,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251983020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:45:50,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:45:50,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:45:50,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230374573] [2021-11-03 03:45:50,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:45:50,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:45:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:45:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:50,788 INFO L87 Difference]: Start difference. First operand 80401 states and 149066 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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) [2021-11-03 03:45:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:45:56,571 INFO L93 Difference]: Finished difference Result 227271 states and 421083 transitions. [2021-11-03 03:45:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:45:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 64 [2021-11-03 03:45:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:45:56,822 INFO L225 Difference]: With dead ends: 227271 [2021-11-03 03:45:56,823 INFO L226 Difference]: Without dead ends: 155442 [2021-11-03 03:45:56,879 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:45:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155442 states.