./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.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_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/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_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/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_aa41e032-c988-4041-8e13-3f99ab5492ac/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 ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:43:28,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:43:28,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:43:28,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:43:28,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:43:28,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:43:28,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:43:28,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:43:28,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:43:28,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:43:28,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:43:28,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:43:28,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:43:28,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:43:28,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:43:28,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:43:28,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:43:28,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:43:28,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:43:28,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:43:28,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:43:28,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:43:28,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:43:28,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:43:28,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:43:28,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:43:28,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:43:28,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:43:28,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:43:28,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:43:28,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:43:28,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:43:28,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:43:28,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:43:28,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:43:28,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:43:28,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:43:28,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:43:28,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:43:28,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:43:28,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:43:28,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:43:28,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:43:28,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:43:28,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:43:28,846 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:43:28,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:43:28,847 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:43:28,848 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:43:28,848 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:43:28,848 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:43:28,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:43:28,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:43:28,849 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:43:28,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:43:28,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:43:28,851 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:43:28,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:43:28,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:43:28,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:43:28,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:43:28,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:43:28,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:43:28,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:43:28,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:43:28,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:43:28,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:43:28,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:43:28,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:43:28,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:43:28,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:43:28,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:43:28,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:28,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:43:28,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:43:28,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:43:28,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:43:28,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:43:28,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:43:28,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:43:28,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:43:28,858 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_aa41e032-c988-4041-8e13-3f99ab5492ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2021-11-03 03:43:29,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:43:29,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:43:29,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:43:29,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:43:29,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:43:29,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-03 03:43:29,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/633f9caf5/8f30d08363e441ac99f02ccdf1cb4967/FLAG1e07f2dec [2021-11-03 03:43:29,800 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:43:29,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-03 03:43:29,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/633f9caf5/8f30d08363e441ac99f02ccdf1cb4967/FLAG1e07f2dec [2021-11-03 03:43:30,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/633f9caf5/8f30d08363e441ac99f02ccdf1cb4967 [2021-11-03 03:43:30,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:43:30,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:43:30,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:30,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:43:30,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:43:30,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:30" (1/1) ... [2021-11-03 03:43:30,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d330232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:30, skipping insertion in model container [2021-11-03 03:43:30,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:30" (1/1) ... [2021-11-03 03:43:30,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:43:30,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:43:30,371 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_aa41e032-c988-4041-8e13-3f99ab5492ac/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-03 03:43:30,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:30,770 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 03:43:30,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@234c21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:30, skipping insertion in model container [2021-11-03 03:43:30,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:30,771 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:43:30,774 INFO L168 Benchmark]: Toolchain (without parser) took 734.76 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 84.1 MB in the beginning and 103.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:43:30,774 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 117.4 MB. Free memory is still 73.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:43:30,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.21 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 84.1 MB in the beginning and 103.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:43:30,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 117.4 MB. Free memory is still 73.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 732.21 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 84.1 MB in the beginning and 103.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2371]: 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_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/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_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/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_aa41e032-c988-4041-8e13-3f99ab5492ac/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 ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:43:33,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:43:33,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:43:33,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:43:33,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:43:33,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:43:33,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:43:33,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:43:33,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:43:33,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:43:33,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:43:33,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:43:33,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:43:33,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:43:33,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:43:33,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:43:33,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:43:33,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:43:33,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:43:33,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:43:33,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:43:33,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:43:33,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:43:33,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:43:33,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:43:33,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:43:33,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:43:33,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:43:33,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:43:33,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:43:33,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:43:33,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:43:33,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:43:33,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:43:33,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:43:33,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:43:33,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:43:33,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:43:33,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:43:33,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:43:33,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:43:33,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:43:33,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:43:33,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:43:33,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:43:33,181 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:43:33,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:43:33,181 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:43:33,181 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:43:33,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:43:33,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:43:33,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:43:33,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:43:33,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:43:33,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:43:33,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:43:33,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:43:33,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:43:33,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:43:33,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:43:33,184 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:43:33,184 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:43:33,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:43:33,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:43:33,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:43:33,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:43:33,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:43:33,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:43:33,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:33,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:43:33,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:43:33,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:43:33,187 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:43:33,187 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:43:33,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:43:33,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:43:33,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:43:33,187 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_aa41e032-c988-4041-8e13-3f99ab5492ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2021-11-03 03:43:33,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:43:33,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:43:33,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:43:33,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:43:33,640 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:43:33,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-03 03:43:33,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/51e44e70e/553a9cc6c198437a8a537886b2981eac/FLAG922caa9fb [2021-11-03 03:43:34,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:43:34,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-11-03 03:43:34,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/51e44e70e/553a9cc6c198437a8a537886b2981eac/FLAG922caa9fb [2021-11-03 03:43:34,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/data/51e44e70e/553a9cc6c198437a8a537886b2981eac [2021-11-03 03:43:34,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:43:34,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:43:34,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:34,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:43:34,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:43:34,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:34" (1/1) ... [2021-11-03 03:43:34,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee5313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:34, skipping insertion in model container [2021-11-03 03:43:34,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:34" (1/1) ... [2021-11-03 03:43:34,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:43:34,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:43:35,011 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_aa41e032-c988-4041-8e13-3f99ab5492ac/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-03 03:43:35,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:35,473 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:43:35,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:43:35,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-03 03:43:35,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:35,685 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:43:35,698 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_aa41e032-c988-4041-8e13-3f99ab5492ac/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-11-03 03:43:35,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:43:35,858 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:43:35,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35 WrapperNode [2021-11-03 03:43:35,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:43:35,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:43:35,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:43:35,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:43:35,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:35,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:36,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:43:36,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:43:36,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:43:36,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:43:36,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:36,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:36,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:36,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:37,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:37,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:37,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:37,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:43:37,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:43:37,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:43:37,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:43:37,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (1/1) ... [2021-11-03 03:43:37,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:43:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:37,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:43:37,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:43:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:43:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:43:37,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:43:37,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:43:58,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:43:58,141 INFO L299 CfgBuilder]: Removed 2071 assume(true) statements. [2021-11-03 03:43:58,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:58 BoogieIcfgContainer [2021-11-03 03:43:58,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:43:58,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:43:58,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:43:58,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:43:58,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:43:34" (1/3) ... [2021-11-03 03:43:58,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b057cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:58, skipping insertion in model container [2021-11-03 03:43:58,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:35" (2/3) ... [2021-11-03 03:43:58,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b057cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:58, skipping insertion in model container [2021-11-03 03:43:58,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:58" (3/3) ... [2021-11-03 03:43:58,160 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2021-11-03 03:43:58,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:43:58,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 03:43:58,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:43:58,267 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 03:43:58,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 03:43:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 9326 states, 9315 states have (on average 1.8909286097691895) internal successors, (17614), 9325 states have internal predecessors, (17614), 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 03:43:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 03:43:58,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:43:58,473 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 03:43:58,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:43:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:43:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -9120908, now seen corresponding path program 1 times [2021-11-03 03:43:58,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:43:58,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381572326] [2021-11-03 03:43:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:43:58,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:43:58,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:43:58,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:43:58,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:43:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:43:58,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:43:58,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:59,205 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 03:43:59,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:59,386 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 03:43:59,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:43:59,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381572326] [2021-11-03 03:43:59,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381572326] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:43:59,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:43:59,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:43:59,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115261051] [2021-11-03 03:43:59,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:43:59,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:43:59,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:43:59,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:43:59,437 INFO L87 Difference]: Start difference. First operand has 9326 states, 9315 states have (on average 1.8909286097691895) internal successors, (17614), 9325 states have internal predecessors, (17614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.0) 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 03:44:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:00,742 INFO L93 Difference]: Finished difference Result 31643 states and 59764 transitions. [2021-11-03 03:44:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:00,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) 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 58 [2021-11-03 03:44:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:01,133 INFO L225 Difference]: With dead ends: 31643 [2021-11-03 03:44:01,160 INFO L226 Difference]: Without dead ends: 22313 [2021-11-03 03:44:01,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 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 03:44:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22313 states. [2021-11-03 03:44:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22313 to 9318. [2021-11-03 03:44:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 9308 states have (on average 1.876235496347228) internal successors, (17464), 9317 states have internal predecessors, (17464), 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 03:44:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 17464 transitions. [2021-11-03 03:44:01,910 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 17464 transitions. Word has length 58 [2021-11-03 03:44:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:01,910 INFO L470 AbstractCegarLoop]: Abstraction has 9318 states and 17464 transitions. [2021-11-03 03:44:01,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) 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 03:44:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 17464 transitions. [2021-11-03 03:44:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 03:44:01,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:01,917 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 03:44:01,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:44:02,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:02,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1911444610, now seen corresponding path program 1 times [2021-11-03 03:44:02,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:02,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014047444] [2021-11-03 03:44:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:02,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:02,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:02,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:44:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:02,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:44:02,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:02,737 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 03:44:02,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:02,923 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 03:44:02,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:02,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014047444] [2021-11-03 03:44:02,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014047444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:02,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:02,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:44:02,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991898661] [2021-11-03 03:44:02,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:02,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:02,927 INFO L87 Difference]: Start difference. First operand 9318 states and 17464 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 03:44:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:06,805 INFO L93 Difference]: Finished difference Result 64607 states and 121079 transitions. [2021-11-03 03:44:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:44:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 60 [2021-11-03 03:44:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:07,027 INFO L225 Difference]: With dead ends: 64607 [2021-11-03 03:44:07,027 INFO L226 Difference]: Without dead ends: 55308 [2021-11-03 03:44:07,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55308 states. [2021-11-03 03:44:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55308 to 9307. [2021-11-03 03:44:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9307 states, 9297 states have (on average 1.8741529525653438) internal successors, (17424), 9306 states have internal predecessors, (17424), 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 03:44:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 17424 transitions. [2021-11-03 03:44:07,930 INFO L78 Accepts]: Start accepts. Automaton has 9307 states and 17424 transitions. Word has length 60 [2021-11-03 03:44:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:07,931 INFO L470 AbstractCegarLoop]: Abstraction has 9307 states and 17424 transitions. [2021-11-03 03:44:07,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 03:44:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 9307 states and 17424 transitions. [2021-11-03 03:44:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 03:44:07,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:07,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:07,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:08,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:08,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash -482080797, now seen corresponding path program 1 times [2021-11-03 03:44:08,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:08,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289964766] [2021-11-03 03:44:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:08,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:08,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:08,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:08,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:44:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:08,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:08,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:08,788 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 03:44:08,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:08,969 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 03:44:08,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:08,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289964766] [2021-11-03 03:44:08,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289964766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:08,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:08,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:44:08,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361945829] [2021-11-03 03:44:08,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:08,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:08,972 INFO L87 Difference]: Start difference. First operand 9307 states and 17424 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 03:44:10,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:10,086 INFO L93 Difference]: Finished difference Result 31491 states and 58982 transitions. [2021-11-03 03:44:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:10,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 65 [2021-11-03 03:44:10,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:10,194 INFO L225 Difference]: With dead ends: 31491 [2021-11-03 03:44:10,194 INFO L226 Difference]: Without dead ends: 22199 [2021-11-03 03:44:10,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 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 03:44:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22199 states. [2021-11-03 03:44:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22199 to 9303. [2021-11-03 03:44:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9293 states have (on average 1.873345528892715) internal successors, (17409), 9302 states have internal predecessors, (17409), 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 03:44:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 17409 transitions. [2021-11-03 03:44:10,847 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 17409 transitions. Word has length 65 [2021-11-03 03:44:10,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:10,847 INFO L470 AbstractCegarLoop]: Abstraction has 9303 states and 17409 transitions. [2021-11-03 03:44:10,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 03:44:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 17409 transitions. [2021-11-03 03:44:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 03:44:10,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:10,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:10,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:11,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:11,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:11,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1874173051, now seen corresponding path program 1 times [2021-11-03 03:44:11,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:11,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949875747] [2021-11-03 03:44:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:11,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:11,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:11,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:11,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:44:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:11,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:44:11,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:11,724 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 03:44:11,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:11,935 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 03:44:11,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:11,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949875747] [2021-11-03 03:44:11,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949875747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:11,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:11,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:44:11,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552352760] [2021-11-03 03:44:11,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:44:11,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:44:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:11,938 INFO L87 Difference]: Start difference. First operand 9303 states and 17409 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:17,236 INFO L93 Difference]: Finished difference Result 101451 states and 190068 transitions. [2021-11-03 03:44:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 03:44:17,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 03:44:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:17,773 INFO L225 Difference]: With dead ends: 101451 [2021-11-03 03:44:17,773 INFO L226 Difference]: Without dead ends: 92168 [2021-11-03 03:44:17,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:44:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92168 states. [2021-11-03 03:44:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92168 to 9316. [2021-11-03 03:44:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 9306 states have (on average 1.8715882226520524) internal successors, (17417), 9315 states have internal predecessors, (17417), 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 03:44:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 17417 transitions. [2021-11-03 03:44:19,043 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 17417 transitions. Word has length 67 [2021-11-03 03:44:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:19,044 INFO L470 AbstractCegarLoop]: Abstraction has 9316 states and 17417 transitions. [2021-11-03 03:44:19,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 17417 transitions. [2021-11-03 03:44:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 03:44:19,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:19,049 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:19,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:19,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:19,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1169725652, now seen corresponding path program 1 times [2021-11-03 03:44:19,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:19,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261377201] [2021-11-03 03:44:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:19,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:19,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:19,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:19,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:44:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:19,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:44:19,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:19,949 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 03:44:19,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:20,140 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 03:44:20,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:20,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261377201] [2021-11-03 03:44:20,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261377201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:20,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:20,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:44:20,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331968969] [2021-11-03 03:44:20,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:20,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:20,143 INFO L87 Difference]: Start difference. First operand 9316 states and 17417 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 03:44:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:22,707 INFO L93 Difference]: Finished difference Result 64593 states and 120959 transitions. [2021-11-03 03:44:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:44:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 03:44:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:22,809 INFO L225 Difference]: With dead ends: 64593 [2021-11-03 03:44:22,809 INFO L226 Difference]: Without dead ends: 55329 [2021-11-03 03:44:22,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:44:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55329 states. [2021-11-03 03:44:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55329 to 9328. [2021-11-03 03:44:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9328 states, 9318 states have (on average 1.8704657651856622) internal successors, (17429), 9327 states have internal predecessors, (17429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9328 states to 9328 states and 17429 transitions. [2021-11-03 03:44:23,541 INFO L78 Accepts]: Start accepts. Automaton has 9328 states and 17429 transitions. Word has length 71 [2021-11-03 03:44:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:23,542 INFO L470 AbstractCegarLoop]: Abstraction has 9328 states and 17429 transitions. [2021-11-03 03:44:23,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 03:44:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9328 states and 17429 transitions. [2021-11-03 03:44:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 03:44:23,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:23,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:23,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:23,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:23,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2031303623, now seen corresponding path program 1 times [2021-11-03 03:44:23,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:23,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778883585] [2021-11-03 03:44:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:23,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:23,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:23,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:23,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:44:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:24,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:24,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:24,352 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 03:44:24,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:24,529 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 03:44:24,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:24,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778883585] [2021-11-03 03:44:24,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778883585] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:24,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:24,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:44:24,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085088951] [2021-11-03 03:44:24,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:44:24,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:24,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:44:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:44:24,533 INFO L87 Difference]: Start difference. First operand 9328 states and 17429 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 03:44:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:25,204 INFO L93 Difference]: Finished difference Result 22290 states and 41698 transitions. [2021-11-03 03:44:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:44:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 03:44:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:25,222 INFO L225 Difference]: With dead ends: 22290 [2021-11-03 03:44:25,222 INFO L226 Difference]: Without dead ends: 12990 [2021-11-03 03:44:25,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 03:44:25,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2021-11-03 03:44:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 9280. [2021-11-03 03:44:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9280 states, 9270 states have (on average 1.871628910463862) internal successors, (17350), 9279 states have internal predecessors, (17350), 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 03:44:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9280 states to 9280 states and 17350 transitions. [2021-11-03 03:44:25,724 INFO L78 Accepts]: Start accepts. Automaton has 9280 states and 17350 transitions. Word has length 71 [2021-11-03 03:44:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:25,725 INFO L470 AbstractCegarLoop]: Abstraction has 9280 states and 17350 transitions. [2021-11-03 03:44:25,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 03:44:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 9280 states and 17350 transitions. [2021-11-03 03:44:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 03:44:25,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:25,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:25,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:25,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:25,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1413827172, now seen corresponding path program 1 times [2021-11-03 03:44:25,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:25,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361924048] [2021-11-03 03:44:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:25,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:25,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:25,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:25,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:44:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:26,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:44:26,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:26,583 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 03:44:26,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:26,770 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 03:44:26,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:26,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361924048] [2021-11-03 03:44:26,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361924048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:26,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:26,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:44:26,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111900706] [2021-11-03 03:44:26,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:44:26,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:44:26,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:44:26,773 INFO L87 Difference]: Start difference. First operand 9280 states and 17350 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:27,323 INFO L93 Difference]: Finished difference Result 22237 states and 41604 transitions. [2021-11-03 03:44:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:44:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 03:44:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:27,342 INFO L225 Difference]: With dead ends: 22237 [2021-11-03 03:44:27,342 INFO L226 Difference]: Without dead ends: 12988 [2021-11-03 03:44:27,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 140 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 03:44:27,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2021-11-03 03:44:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 9277. [2021-11-03 03:44:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 9267 states have (on average 1.8708319844609906) internal successors, (17337), 9276 states have internal predecessors, (17337), 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 03:44:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 17337 transitions. [2021-11-03 03:44:27,810 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 17337 transitions. Word has length 72 [2021-11-03 03:44:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:27,811 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 17337 transitions. [2021-11-03 03:44:27,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:44:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 17337 transitions. [2021-11-03 03:44:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 03:44:27,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:27,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:27,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:28,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:28,021 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1427399418, now seen corresponding path program 1 times [2021-11-03 03:44:28,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:28,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058108761] [2021-11-03 03:44:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:28,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:28,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:28,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:28,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:44:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:44:28,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:28,681 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 03:44:28,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:28,872 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 03:44:28,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:28,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058108761] [2021-11-03 03:44:28,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058108761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:28,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:28,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:44:28,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781787305] [2021-11-03 03:44:28,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:44:28,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:44:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:28,875 INFO L87 Difference]: Start difference. First operand 9277 states and 17337 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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 03:44:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:31,014 INFO L93 Difference]: Finished difference Result 51855 states and 97051 transitions. [2021-11-03 03:44:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 03:44:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 03:44:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:31,069 INFO L225 Difference]: With dead ends: 51855 [2021-11-03 03:44:31,069 INFO L226 Difference]: Without dead ends: 42613 [2021-11-03 03:44:31,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-03 03:44:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42613 states. [2021-11-03 03:44:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42613 to 9282. [2021-11-03 03:44:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9272 states have (on average 1.8699309749784296) internal successors, (17338), 9281 states have internal predecessors, (17338), 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 03:44:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 17338 transitions. [2021-11-03 03:44:31,554 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 17338 transitions. Word has length 73 [2021-11-03 03:44:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:31,555 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 17338 transitions. [2021-11-03 03:44:31,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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 03:44:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 17338 transitions. [2021-11-03 03:44:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 03:44:31,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:31,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:31,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 03:44:31,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:31,891 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1375286721, now seen corresponding path program 1 times [2021-11-03 03:44:31,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:31,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060670250] [2021-11-03 03:44:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:31,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:31,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:31,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:31,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:44:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:32,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:44:32,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:32,615 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 03:44:32,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:32,816 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 03:44:32,816 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:32,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060670250] [2021-11-03 03:44:32,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060670250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:32,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:32,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:44:32,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303228319] [2021-11-03 03:44:32,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:32,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:32,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:32,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:32,818 INFO L87 Difference]: Start difference. First operand 9282 states and 17338 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 03:44:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:40,625 INFO L93 Difference]: Finished difference Result 32164 states and 60053 transitions. [2021-11-03 03:44:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:44:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 74 [2021-11-03 03:44:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:40,651 INFO L225 Difference]: With dead ends: 32164 [2021-11-03 03:44:40,651 INFO L226 Difference]: Without dead ends: 22925 [2021-11-03 03:44:40,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:44:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22925 states. [2021-11-03 03:44:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22925 to 9282. [2021-11-03 03:44:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9272 states have (on average 1.8092105263157894) internal successors, (16775), 9281 states have internal predecessors, (16775), 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 03:44:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 16775 transitions. [2021-11-03 03:44:41,208 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 16775 transitions. Word has length 74 [2021-11-03 03:44:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:41,208 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 16775 transitions. [2021-11-03 03:44:41,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 03:44:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 16775 transitions. [2021-11-03 03:44:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:44:41,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:41,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:41,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:44:41,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:41,423 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1619201109, now seen corresponding path program 1 times [2021-11-03 03:44:41,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:41,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112323832] [2021-11-03 03:44:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:41,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:41,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:41,425 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:41,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:44:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:42,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:44:42,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:42,276 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 03:44:42,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:42,491 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 03:44:42,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:42,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112323832] [2021-11-03 03:44:42,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112323832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:42,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:42,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:44:42,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646271178] [2021-11-03 03:44:42,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:42,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:42,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:42,493 INFO L87 Difference]: Start difference. First operand 9282 states and 16775 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 03:44:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:49,368 INFO L93 Difference]: Finished difference Result 44129 states and 80754 transitions. [2021-11-03 03:44:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 03:44:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2021-11-03 03:44:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:49,423 INFO L225 Difference]: With dead ends: 44129 [2021-11-03 03:44:49,423 INFO L226 Difference]: Without dead ends: 34917 [2021-11-03 03:44:49,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:44:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34917 states. [2021-11-03 03:44:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34917 to 12842. [2021-11-03 03:44:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12842 states, 12832 states have (on average 1.810785536159601) internal successors, (23236), 12841 states have internal predecessors, (23236), 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 03:44:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12842 states to 12842 states and 23236 transitions. [2021-11-03 03:44:50,220 INFO L78 Accepts]: Start accepts. Automaton has 12842 states and 23236 transitions. Word has length 82 [2021-11-03 03:44:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:44:50,220 INFO L470 AbstractCegarLoop]: Abstraction has 12842 states and 23236 transitions. [2021-11-03 03:44:50,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 03:44:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12842 states and 23236 transitions. [2021-11-03 03:44:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 03:44:50,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:44:50,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:44:50,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-03 03:44:50,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:44:50,440 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 03:44:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:44:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1533697070, now seen corresponding path program 1 times [2021-11-03 03:44:50,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:44:50,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171189830] [2021-11-03 03:44:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:44:50,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:44:50,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:44:50,442 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:44:50,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa41e032-c988-4041-8e13-3f99ab5492ac/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:44:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:44:51,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:44:51,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:44:51,515 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 03:44:51,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:44:53,444 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 03:44:53,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:44:53,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171189830] [2021-11-03 03:44:53,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171189830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:44:53,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:44:53,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:44:53,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993485174] [2021-11-03 03:44:53,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:44:53,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:44:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:44:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:44:53,447 INFO L87 Difference]: Start difference. First operand 12842 states and 23236 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 03:44:59,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:44:59,590 INFO L93 Difference]: Finished difference Result 48309 states and 87564 transitions. [2021-11-03 03:44:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:44:59,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 5 states have internal predecessors, (132), 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 85 [2021-11-03 03:44:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:44:59,650 INFO L225 Difference]: With dead ends: 48309 [2021-11-03 03:44:59,650 INFO L226 Difference]: Without dead ends: 35529 [2021-11-03 03:44:59,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:44:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35529 states.