./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.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_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/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_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/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_861586e8-e312-4641-a757-af9d5178e9ec/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 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:32,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:32,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:32,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:32,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:32,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:32,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:32,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:32,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:32,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:32,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:32,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:32,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:32,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:32,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:32,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:32,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:32,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:32,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:32,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:32,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:32,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:32,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:32,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:32,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:32,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:32,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:32,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:32,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:32,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:32,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:32,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:32,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:32,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:32,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:32,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:32,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:32,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:32,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:32,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:32,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:32,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:52:32,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:32,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:32,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:32,931 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:32,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:32,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:32,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:52:32,932 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:32,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:32,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:52:32,938 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:52:32,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:32,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:52:32,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:52:32,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:52:32,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:32,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:52:32,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:52:32,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:52:32,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:32,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:32,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:32,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:32,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:32,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:52:32,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:32,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:32,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:32,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:32,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:32,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:32,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:32,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:32,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:32,945 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:52:32,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:52:32,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:32,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:32,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:32,946 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_861586e8-e312-4641-a757-af9d5178e9ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2021-11-03 03:52:33,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:33,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:33,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:33,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:33,214 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:33,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-03 03:52:33,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/f582acb89/e47eaf4f2e874e0cabc50826c69a2003/FLAGd9f27f781 [2021-11-03 03:52:33,907 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:33,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-03 03:52:33,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/f582acb89/e47eaf4f2e874e0cabc50826c69a2003/FLAGd9f27f781 [2021-11-03 03:52:34,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/f582acb89/e47eaf4f2e874e0cabc50826c69a2003 [2021-11-03 03:52:34,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:34,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:34,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:34,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:34,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:34,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:34" (1/1) ... [2021-11-03 03:52:34,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41431f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:34, skipping insertion in model container [2021-11-03 03:52:34,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:34" (1/1) ... [2021-11-03 03:52:34,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:34,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:34,531 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_861586e8-e312-4641-a757-af9d5178e9ec/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-03 03:52:34,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:34,838 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 03:52:34,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d94a941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:34, skipping insertion in model container [2021-11-03 03:52:34,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:34,840 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:52:34,842 INFO L168 Benchmark]: Toolchain (without parser) took 752.08 ms. Allocated memory is still 109.1 MB. Free memory was 70.6 MB in the beginning and 73.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:34,844 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 90.3 MB in the beginning and 90.2 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:52:34,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.58 ms. Allocated memory is still 109.1 MB. Free memory was 70.4 MB in the beginning and 73.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:34,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 90.3 MB in the beginning and 90.2 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 748.58 ms. Allocated memory is still 109.1 MB. Free memory was 70.4 MB in the beginning and 73.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: 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_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/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_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/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_861586e8-e312-4641-a757-af9d5178e9ec/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 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:37,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:37,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:37,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:37,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:37,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:37,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:37,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:37,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:37,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:37,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:37,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:37,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:37,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:37,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:37,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:37,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:37,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:37,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:37,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:37,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:37,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:37,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:37,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:37,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:37,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:37,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:37,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:37,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:37,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:37,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:37,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:37,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:37,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:37,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:37,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:37,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:37,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:37,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:37,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:37,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:37,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:52:37,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:37,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:37,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:37,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:37,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:37,234 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:37,234 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:37,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:37,235 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:37,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:37,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:52:37,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:52:37,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:37,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:37,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:37,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:37,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:37,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:52:37,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:52:37,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:52:37,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:37,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:37,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:37,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:37,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:52:37,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:37,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:37,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:37,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:37,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:37,242 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:52:37,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:52:37,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:37,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:37,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:37,243 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_861586e8-e312-4641-a757-af9d5178e9ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2021-11-03 03:52:37,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:37,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:37,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:37,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:37,638 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:37,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-03 03:52:37,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/e2493c693/8d3abfbbe6ab4b8f8fdc543ff4333d58/FLAG3e808a352 [2021-11-03 03:52:38,468 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:38,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2021-11-03 03:52:38,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/e2493c693/8d3abfbbe6ab4b8f8fdc543ff4333d58/FLAG3e808a352 [2021-11-03 03:52:38,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/data/e2493c693/8d3abfbbe6ab4b8f8fdc543ff4333d58 [2021-11-03 03:52:38,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:38,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:38,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:38,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:38,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:38,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:38" (1/1) ... [2021-11-03 03:52:38,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca3b672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:38, skipping insertion in model container [2021-11-03 03:52:38,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:38" (1/1) ... [2021-11-03 03:52:38,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:38,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:39,133 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_861586e8-e312-4641-a757-af9d5178e9ec/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-03 03:52:39,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:39,350 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:52:39,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:39,436 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_861586e8-e312-4641-a757-af9d5178e9ec/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-03 03:52:39,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:39,509 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:52:39,573 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_861586e8-e312-4641-a757-af9d5178e9ec/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2021-11-03 03:52:39,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:39,733 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:52:39,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39 WrapperNode [2021-11-03 03:52:39,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:39,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:52:39,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:52:39,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:52:39,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:39,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:52:40,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:52:40,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:52:40,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:52:40,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:52:40,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:52:40,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:52:40,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:52:40,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (1/1) ... [2021-11-03 03:52:40,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:52:40,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:52:41,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:52:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:52:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:52:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:52:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:52:56,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:52:56,228 INFO L299 CfgBuilder]: Removed 1467 assume(true) statements. [2021-11-03 03:52:56,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:56 BoogieIcfgContainer [2021-11-03 03:52:56,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:52:56,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:52:56,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:52:56,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:52:56,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:38" (1/3) ... [2021-11-03 03:52:56,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258b41b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:56, skipping insertion in model container [2021-11-03 03:52:56,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:39" (2/3) ... [2021-11-03 03:52:56,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258b41b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:56, skipping insertion in model container [2021-11-03 03:52:56,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:56" (3/3) ... [2021-11-03 03:52:56,251 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2021-11-03 03:52:56,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:52:56,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 03:52:56,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:52:56,361 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 03:52:56,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 03:52:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 6343 states, 6332 states have (on average 1.888818698673405) internal successors, (11960), 6342 states have internal predecessors, (11960), 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 03:52:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 03:52:56,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:52:56,513 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] [2021-11-03 03:52:56,514 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 03:52:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:52:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1445769567, now seen corresponding path program 1 times [2021-11-03 03:52:56,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:52:56,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034128400] [2021-11-03 03:52:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:52:56,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:52:56,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:52:56,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:52:56,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:52:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:52:56,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:52:56,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:57,185 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 03:52:57,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:52:57,346 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 03:52:57,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:52:57,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034128400] [2021-11-03 03:52:57,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034128400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:52:57,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:52:57,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:52:57,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834257491] [2021-11-03 03:52:57,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:52:57,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:52:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:52:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:52:57,394 INFO L87 Difference]: Start difference. First operand has 6343 states, 6332 states have (on average 1.888818698673405) internal successors, (11960), 6342 states have internal predecessors, (11960), 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 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 03:52:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:52:59,887 INFO L93 Difference]: Finished difference Result 44023 states and 83001 transitions. [2021-11-03 03:52:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:52:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 41 [2021-11-03 03:52:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:00,145 INFO L225 Difference]: With dead ends: 44023 [2021-11-03 03:53:00,145 INFO L226 Difference]: Without dead ends: 37681 [2021-11-03 03:53:00,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:53:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37681 states. [2021-11-03 03:53:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37681 to 6355. [2021-11-03 03:53:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6355 states, 6345 states have (on average 1.884475965327029) internal successors, (11957), 6354 states have internal predecessors, (11957), 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 03:53:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6355 states to 6355 states and 11957 transitions. [2021-11-03 03:53:00,788 INFO L78 Accepts]: Start accepts. Automaton has 6355 states and 11957 transitions. Word has length 41 [2021-11-03 03:53:00,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:00,789 INFO L470 AbstractCegarLoop]: Abstraction has 6355 states and 11957 transitions. [2021-11-03 03:53:00,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 03:53:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6355 states and 11957 transitions. [2021-11-03 03:53:00,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 03:53:00,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:00,795 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] [2021-11-03 03:53:00,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:01,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:01,016 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 03:53:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1481796937, now seen corresponding path program 1 times [2021-11-03 03:53:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:01,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96066087] [2021-11-03 03:53:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:01,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:01,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:01,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:53:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:01,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:53:01,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:01,611 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 03:53:01,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:01,741 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 03:53:01,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:01,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96066087] [2021-11-03 03:53:01,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96066087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:01,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:01,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:53:01,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261013470] [2021-11-03 03:53:01,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:53:01,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:53:01,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:53:01,749 INFO L87 Difference]: Start difference. First operand 6355 states and 11957 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 03:53:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:02,108 INFO L93 Difference]: Finished difference Result 12622 states and 23757 transitions. [2021-11-03 03:53:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:53:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-03 03:53:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:02,126 INFO L225 Difference]: With dead ends: 12622 [2021-11-03 03:53:02,126 INFO L226 Difference]: Without dead ends: 6281 [2021-11-03 03:53:02,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 03:53:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2021-11-03 03:53:02,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2021-11-03 03:53:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6271 states have (on average 1.8837505979907512) internal successors, (11813), 6280 states have internal predecessors, (11813), 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 03:53:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11813 transitions. [2021-11-03 03:53:02,327 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11813 transitions. Word has length 43 [2021-11-03 03:53:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:02,327 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 11813 transitions. [2021-11-03 03:53:02,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 03:53:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11813 transitions. [2021-11-03 03:53:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 03:53:02,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:02,330 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] [2021-11-03 03:53:02,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:02,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:02,544 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 03:53:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash -462596633, now seen corresponding path program 1 times [2021-11-03 03:53:02,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:02,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825759887] [2021-11-03 03:53:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:02,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:02,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:02,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:53:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:02,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:53:02,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:03,073 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 03:53:03,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:03,228 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 03:53:03,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:03,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825759887] [2021-11-03 03:53:03,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825759887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:03,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:03,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:53:03,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503200680] [2021-11-03 03:53:03,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:53:03,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:53:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:53:03,231 INFO L87 Difference]: Start difference. First operand 6281 states and 11813 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 03:53:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:03,814 INFO L93 Difference]: Finished difference Result 12536 states and 23589 transitions. [2021-11-03 03:53:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:53:03,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 45 [2021-11-03 03:53:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:03,833 INFO L225 Difference]: With dead ends: 12536 [2021-11-03 03:53:03,834 INFO L226 Difference]: Without dead ends: 6281 [2021-11-03 03:53:03,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:53:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2021-11-03 03:53:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2021-11-03 03:53:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6271 states have (on average 1.8821559559878807) internal successors, (11803), 6280 states have internal predecessors, (11803), 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 03:53:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11803 transitions. [2021-11-03 03:53:04,139 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11803 transitions. Word has length 45 [2021-11-03 03:53:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:04,140 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 11803 transitions. [2021-11-03 03:53:04,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 03:53:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11803 transitions. [2021-11-03 03:53:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 03:53:04,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:04,145 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:04,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:04,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:04,363 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 03:53:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1097906127, now seen corresponding path program 1 times [2021-11-03 03:53:04,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:04,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767442404] [2021-11-03 03:53:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:04,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:04,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:04,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:04,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:53:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:04,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:53:04,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:04,927 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 03:53:04,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:05,115 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 03:53:05,115 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:05,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767442404] [2021-11-03 03:53:05,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767442404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:05,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:05,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:53:05,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423886109] [2021-11-03 03:53:05,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:53:05,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:53:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:53:05,118 INFO L87 Difference]: Start difference. First operand 6281 states and 11803 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 03:53:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:10,358 INFO L93 Difference]: Finished difference Result 28172 states and 52527 transitions. [2021-11-03 03:53:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 03:53:10,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 03:53:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:10,418 INFO L225 Difference]: With dead ends: 28172 [2021-11-03 03:53:10,418 INFO L226 Difference]: Without dead ends: 21961 [2021-11-03 03:53:10,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 03:53:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2021-11-03 03:53:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 11041. [2021-11-03 03:53:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11041 states, 11031 states have (on average 1.8819689964645092) internal successors, (20760), 11040 states have internal predecessors, (20760), 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 03:53:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 20760 transitions. [2021-11-03 03:53:11,052 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 20760 transitions. Word has length 49 [2021-11-03 03:53:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:11,053 INFO L470 AbstractCegarLoop]: Abstraction has 11041 states and 20760 transitions. [2021-11-03 03:53:11,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 03:53:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 20760 transitions. [2021-11-03 03:53:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 03:53:11,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:11,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:11,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:11,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:11,276 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 03:53:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1279921354, now seen corresponding path program 1 times [2021-11-03 03:53:11,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:11,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560752985] [2021-11-03 03:53:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:11,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:11,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:11,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:11,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:53:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:11,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:53:11,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:11,837 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 03:53:11,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:11,990 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 03:53:11,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:11,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560752985] [2021-11-03 03:53:11,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560752985] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:11,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:11,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:53:11,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886515767] [2021-11-03 03:53:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:53:11,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:53:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:53:11,992 INFO L87 Difference]: Start difference. First operand 11041 states and 20760 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 03:53:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:16,071 INFO L93 Difference]: Finished difference Result 91794 states and 172745 transitions. [2021-11-03 03:53:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:53:16,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 03:53:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:16,420 INFO L225 Difference]: With dead ends: 91794 [2021-11-03 03:53:16,421 INFO L226 Difference]: Without dead ends: 80823 [2021-11-03 03:53:16,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:53:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80823 states. [2021-11-03 03:53:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80823 to 20731. [2021-11-03 03:53:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20731 states, 20721 states have (on average 1.880797258819555) internal successors, (38972), 20730 states have internal predecessors, (38972), 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 03:53:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20731 states to 20731 states and 38972 transitions. [2021-11-03 03:53:17,575 INFO L78 Accepts]: Start accepts. Automaton has 20731 states and 38972 transitions. Word has length 49 [2021-11-03 03:53:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:17,576 INFO L470 AbstractCegarLoop]: Abstraction has 20731 states and 38972 transitions. [2021-11-03 03:53:17,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 03:53:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 20731 states and 38972 transitions. [2021-11-03 03:53:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 03:53:17,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:17,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:17,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:17,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:17,797 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 03:53:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash -938010054, now seen corresponding path program 1 times [2021-11-03 03:53:17,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:17,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458258378] [2021-11-03 03:53:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:17,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:17,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:17,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:17,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:53:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:18,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:53:18,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:18,285 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 03:53:18,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:18,400 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 03:53:18,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:18,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458258378] [2021-11-03 03:53:18,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458258378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:18,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:18,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:53:18,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761079222] [2021-11-03 03:53:18,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:53:18,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:18,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:53:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:53:18,403 INFO L87 Difference]: Start difference. First operand 20731 states and 38972 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:53:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:20,055 INFO L93 Difference]: Finished difference Result 61273 states and 115202 transitions. [2021-11-03 03:53:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:53:20,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 03:53:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:20,124 INFO L225 Difference]: With dead ends: 61273 [2021-11-03 03:53:20,124 INFO L226 Difference]: Without dead ends: 40574 [2021-11-03 03:53:20,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 03:53:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40574 states. [2021-11-03 03:53:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40574 to 20607. [2021-11-03 03:53:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20607 states, 20597 states have (on average 1.880079623246104) internal successors, (38724), 20606 states have internal predecessors, (38724), 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 03:53:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20607 states to 20607 states and 38724 transitions. [2021-11-03 03:53:21,073 INFO L78 Accepts]: Start accepts. Automaton has 20607 states and 38724 transitions. Word has length 50 [2021-11-03 03:53:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:21,073 INFO L470 AbstractCegarLoop]: Abstraction has 20607 states and 38724 transitions. [2021-11-03 03:53:21,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:53:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 20607 states and 38724 transitions. [2021-11-03 03:53:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 03:53:21,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:21,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:21,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:21,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:21,292 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 03:53:21,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1758868867, now seen corresponding path program 1 times [2021-11-03 03:53:21,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:21,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552967466] [2021-11-03 03:53:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:21,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:21,295 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:21,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:53:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:21,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:53:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:21,899 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 03:53:21,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:22,063 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 03:53:22,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552967466] [2021-11-03 03:53:22,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552967466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:22,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:22,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 03:53:22,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117264430] [2021-11-03 03:53:22,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:53:22,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:22,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:53:22,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:53:22,066 INFO L87 Difference]: Start difference. First operand 20607 states and 38724 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 03:53:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:32,462 INFO L93 Difference]: Finished difference Result 77808 states and 145962 transitions. [2021-11-03 03:53:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 03:53:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 50 [2021-11-03 03:53:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:32,542 INFO L225 Difference]: With dead ends: 77808 [2021-11-03 03:53:32,543 INFO L226 Difference]: Without dead ends: 57235 [2021-11-03 03:53:32,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 03:53:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57235 states. [2021-11-03 03:53:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57235 to 40149. [2021-11-03 03:53:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40149 states, 40139 states have (on average 1.8630259847031565) internal successors, (74780), 40148 states have internal predecessors, (74780), 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 03:53:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40149 states to 40149 states and 74780 transitions. [2021-11-03 03:53:34,393 INFO L78 Accepts]: Start accepts. Automaton has 40149 states and 74780 transitions. Word has length 50 [2021-11-03 03:53:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:34,394 INFO L470 AbstractCegarLoop]: Abstraction has 40149 states and 74780 transitions. [2021-11-03 03:53:34,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 03:53:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 40149 states and 74780 transitions. [2021-11-03 03:53:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 03:53:34,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:34,396 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] [2021-11-03 03:53:34,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:34,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:34,611 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 03:53:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -203819908, now seen corresponding path program 1 times [2021-11-03 03:53:34,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:34,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412605813] [2021-11-03 03:53:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:34,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:34,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:34,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:34,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:53:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:35,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:53:35,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:35,115 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 03:53:35,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:35,279 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 03:53:35,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:35,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412605813] [2021-11-03 03:53:35,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412605813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:35,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:35,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:53:35,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965932289] [2021-11-03 03:53:35,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:53:35,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:35,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:53:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:53:35,284 INFO L87 Difference]: Start difference. First operand 40149 states and 74780 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 03:53:39,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:39,275 INFO L93 Difference]: Finished difference Result 157645 states and 293753 transitions. [2021-11-03 03:53:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:53:39,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 54 [2021-11-03 03:53:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:39,465 INFO L225 Difference]: With dead ends: 157645 [2021-11-03 03:53:39,465 INFO L226 Difference]: Without dead ends: 117533 [2021-11-03 03:53:39,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 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 03:53:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117533 states. [2021-11-03 03:53:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117533 to 40035. [2021-11-03 03:53:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40035 states, 40025 states have (on average 1.8575890068707057) internal successors, (74350), 40034 states have internal predecessors, (74350), 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 03:53:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40035 states to 40035 states and 74350 transitions. [2021-11-03 03:53:41,652 INFO L78 Accepts]: Start accepts. Automaton has 40035 states and 74350 transitions. Word has length 54 [2021-11-03 03:53:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:53:41,653 INFO L470 AbstractCegarLoop]: Abstraction has 40035 states and 74350 transitions. [2021-11-03 03:53:41,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 03:53:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 40035 states and 74350 transitions. [2021-11-03 03:53:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:53:41,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:53:41,654 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:53:41,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:53:41,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:53:41,859 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 03:53:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:53:41,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1095776257, now seen corresponding path program 1 times [2021-11-03 03:53:41,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:53:41,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729041024] [2021-11-03 03:53:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:53:41,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:53:41,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:53:41,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:53:41,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_861586e8-e312-4641-a757-af9d5178e9ec/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 03:53:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:53:42,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:53:42,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:53:42,494 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 03:53:42,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:53:42,660 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 03:53:42,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:53:42,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729041024] [2021-11-03 03:53:42,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729041024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:53:42,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:53:42,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 03:53:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134483907] [2021-11-03 03:53:42,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:53:42,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:53:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:53:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:53:42,663 INFO L87 Difference]: Start difference. First operand 40035 states and 74350 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 03:53:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:53:53,155 INFO L93 Difference]: Finished difference Result 334241 states and 622909 transitions. [2021-11-03 03:53:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:53:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 03:53:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:53:53,896 INFO L225 Difference]: With dead ends: 334241 [2021-11-03 03:53:53,897 INFO L226 Difference]: Without dead ends: 294262 [2021-11-03 03:53:53,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:53:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294262 states.